How To Disconnect Car Battery

Toyota's stock battery is a Panasonic Group 35 battery. Now the airbag light is on even after reconnecting the airbags. Disconnect the battery. Easily installs onto your battery post with minimal tools. Others might store the battery under the car floor or below the rear seat. Were here to ensure you get the very best price for your unwanted car. 1 x Battery Disconnect Knife Blade. A bad battery can put a. If your battery is 4 years old or older, your car or truck battery is at risk. You can also check online with the car brand and model to find out where the battery is located. You go to turn your ignition, and nothing happens. The last thing you want to do is put a car cover on a dirty vehicle. Lift the Terminal Covers. 2) Disconnect the battery for 30 mins. If your car doesn't start, the most likely cause is a dead battery. The best insurance you can have is a battery disconnect, as not only does it prevent battery drain down it also serves as a fire and theft deterrent when your car is stored in the shop. From there, we will present how to reset the car's computer once the battery is disconnected. There you will need to find the fuse for the car alarm. However, in colder areas it may be necessary to remove the battery when storing it for the winter. The starter module is under the drivers side dash, usually to the left of the steering column. These steps explain how to reconnect car battery terminals. With no battery in the circuit to act as a buffer, the alternator can put out up to 150 volts, depending on engine rpm. Remove My Car is one of the leading Scrap car Networks quoting instantly online with the choice to send to our FREE Online Auction. Every vehicle is unique, and it only follows that every make and model has a different setup, at least where battery connections are concerned. If you’re reusing your battery, clean all corrosion off the tops of the posts with a terminal cleaning tool. Charging your battery with a four amp charger will take about 12 hours to get a full charge out of this low amperage. Remove the clamp and then remove the battery from the vehicle. When a damaged vehicle enters a collision repair facility, many times the repairs require the battery to be disconnected. 6 volts, disconnect the battery and fully charge it with a battery charger. How to charge a battery. Audi Q7: How to Replace Battery. Battery disconnect switches cut-off electrical power, help protect against electrical fires and theft when equipment is not in use, provide a reliable shutdown of power during maintenance, and protect batteries from excessive drain. The easy way to disconnect electrical power on any vehicle, without tools. Switch off the ignition and remove the key and any DIAG equipment. Disconnect the negative battery termnial on your Audi. I usually spend my time on the Camry forum, but I have a question for a friend. Since a GPS locator is tiny, it's easier to set up but difficult to spot. Remove the battery, being careful not to let the positive terminal touch any metal part of the car. Never dead again: Boost your smartphone battery life—whether it's an iPhone or Android—with these easy tips you probably never knew about. For safety reasons, battery cut-off switches are a valuable—and sometimes mandated—resource. You will need a voltmeter and a hydrometer to perform both of these tests. In any case, to remove the battery, disconnect the positive (+) cable, then disconnect the ground (-) cable. com article we'll explain how to disconnect a car battery. This works for me. Remove the Old Battery and Install the New One: Locate the battery - The battery should be located in an accessible part on either side of the car's frame. You will not loose your radio, seat, alarm or mirror settings as this unit comes with all you need to keep the memory and save your vehicles battery. Step 2: Undo the cables from the battery and inspect it. In some European cars the battery is under the matting in the trunk, or inside the fender of the wheel well. I need to swap out the alternator on my 2011 MB GL550 and want to know the simplest way to disconnect the battery? Is it by accessing the battery under the drivers seat or the terminals under the ho. 39 months on the road … Does it make sense ?. How to Remove Car Battery Terminals. This will be painful for you, your car, and your wrench. Set it aside, away from the battery. This type of connector will pull apart with your hands. Here's how to remove a car's engine and transmission. Sleek modern appearance with Face Plate, sturdy and durable. You should already have all these items in your home as they are common household items. First of all, it's important to remember that working on and even just disconnecting a car battery can be dangerous. Nearly every car built in the past few years uses a keyless remote to lock and unlock the vehicle. Click to expand Even with my profession, and how many times this has happened, I still jump when this happens to me on a customers car. Once you know your battery needs to be replaced, the next step is learning how to replace your Nissan car battery. Should you need to replace them checkout our golf cart battery cables section for the ones you need. Pull up and remove the top battery cover. You’ve relocated the battery to the trunk, but having a disconnect at the track is a good idea anyway, as accidents can happen. Simple answer: Yes Disconnect the negative lead and you’ll be good to go. Don't saw it off while it's still on the battery. In any case, to remove the battery, disconnect the positive (+) cable, then disconnect the ground (-) cable. Follow these essential steps and your car will be ready to roll. Lift and secure the car's hood, then locate the battery. During the life of a car, it is almost inevitable that you will have to disconnect the battery at some point. Sears is having a 25% off sale on die hard batteries, my car is over 5 years old now and still on the original battery. If you switch this order, nothing bad will happen — if you don't make contact between the positive side of the circuit and the ground. You need to unscrew the retaining nut using the spanner wrenches. Park your car outside, preferably in your driveway or in the street. Thoroughly clean your car, inside and out, before storage. Unfiltered electricity can damage the electrical components, for example, computer, radio, etc. 7 volts across both terminals when measured with a voltmeter, a simple device that’s very handy when diagnosing battery issues. Lift the Terminal Covers. Disconnect the battery then unscrew the brackets holding it in its tray. However, you must be cautious because you will be working with dangerous chemicals. While the car's ignition is off, the battery can still produce an electrical charge (and even an explosion) while the terminals are connected. Here's how to remove a car's engine and transmission. If you work on your own car and don't want to get electrocuted, you should disconnect the battery before you do any major work. The car wouldn't start and was towed to a repair shop. Your car's manual, as a backside covering excercise will say disconnect the battery - maybe a result of garages being able to use high current, high voltage fast chargers, but for a more normal modern charger with a carefully controleed output, there is no need to disconnect. It’s marked with a minus (-) sign; the positive terminal has a plus (+) sign. Keep the cables away from the battery terminals (using a bungee, you can “hang” them from the open hood as an option) and let them remain connected for at least half an hour. Electrical disconnect switches have several important jobs in commercial vehicles and equipment. We recommend changing the battery in Cadillacs every 4 years. Disconnect the Battery. Naturally, you won’t be able to remove the battery if this bracket is in place, so use your wrench or pliers to undo any connectors and remove the bracket. Disconnect the negative battery termnial on your Audi. Then fully remove the negative cable from the battery. Keeping your car's battery charged prolongs the life of the battery, and you don't have to wonder whether your car will start. 4 Mark the starter electrical wires for installation reference. Remove the Battery. Attach the red “positive” cable to the good car battery terminal, then attach the other red “positive” cable to your car battery terminal. In some European cars the battery is under the matting in the trunk, or inside the fender of the wheel well. Toyota Camry Dead Engine Battery Replacement Guide. However, you must be cautious because you will be working with dangerous chemicals. Lift out and remove the discharged battery in the direction of. How To Disconnect A Car Battery Safely. When it is functioning properly, you probably give it very little thought. I looked online and found some instructions for disconnecting a panic alarm from other vehicles, but I can't find anything for a 2002 Hyundai Sonata, and I don't want to just start pulling wires. Product description Perfect Wiper Arm Puller and Car Battery Terminal Bearing Tool Color: black + silver Material: 45 # carbon steel Length: 11cm Function Turn the center screw,demount and screwed-on windshield wiper arms Lift clamp off the terminal, remove battery terminals without damage to battery post Package includes: 1X Repair Tool Note: * Your satisfaction is our utmost. I never heard of battery lasting this long that's why I typed this in computer to see if other people ever had one last this long. Re-install the HVACIECAS fuse. But if you’ve got to do it, you might as well do it right and do it fast. Using your wrench, disconnect the battery’s negative cable first and then the positive one. You need to unscrew the retaining nut using the spanner wrenches. Always disconnect the negative (usually black) lead first and reconnect it last, otherwise you could end up getting a nasty shock when you touch the. It is recommended that you DISCONNECT the negative battery terminal before you start charging the battery. Is it safe to weld on a vehicle when the battery is connected? Perhaps on the back bumper it may well be. Car battery death, for the purposes of this article, refers to the battery's inability to hold a charge, usually caused by sulfation. Staying on top of your battery's charge is crucial to avoid getting stranded. Six CD changer will not accept or eject, mechanism seems jammed, will not play CD's. When you cut the power source to some of the electrical elements to your car, they may require you to enter a code when the battery is reconnected. Basic Rules for Battery Care & Maintenance: SAFETY PRECAUTIONS. How to clean a battery compartment containing corroded alkaline batteries. Oh have Thermaltake armor case plus and no internal speaker so don't get beeps. Some Honda models may have a second bracket that surrounds the battery. Windows 10 allows you to see which applications are draining your battery the most. No corrosion or breaks in the cables that could cause issues and sacrifice performance of your golf cart. Step 2 - Remove hold down clamp. Removing the battery from the circuit allows those spikes and transients to travel around, endangering every semiconductor circuit in your car. Loosen the clamps or screws that connect the battery to the terminals and disconnect the securing mechanism that holds the battery in its housing. Wait the amount of time indicated by the manual for the type of charger you have and the voltage selected. You are now ready to physically disconnect and remove the car battery. if i don't drive the car for a week it won't start, but if i start it every couple of days it's fine. Step 4 — Remove the Battery and Clean the Holder. If you disconnect the battery and the car conks out, you don't know if it conked out due to insufficient alternator current, or whether the resulting transients caused your ECU (the car's computer, which controls fuel mixture, timing, and much more) to spit out bad data, shutting down the car. Learn how to disconnect a vehicle's battery. Remove the Battery. There will be 2 or more fuses located on these wires, you just need to remove the fuses. This protects your car from corrosive battery acid. Is there a specific disconnect - reconnect sequence for the battery cables?. Remember to remove your car key from the ignition and shut off the car before performing this guide. For example, a car battery may explode while starting the car, while jump starting or by carelessly shorting the terminals with a screwdriver. Park your car outside, preferably in your driveway or in the street. Disconnect battery to trickle charge? - gordonbennet : Is the battery old GB? No it's about 8 months old Humph and a substantial Bosch jobbie, but my car only really gets used for work commuting now, so with lights, heaters, rear window heater, mirror heaters etc running it doesn't get a fair crack at being fully charged up, and i'd like to give it a gentle top up. It is typically recommended to disconnect the negative terminal because it is a somewhat safer procedure: If your wrench should accidentally contact the car chassis while doing so, it is no big deal, as the negative terminal is connected to the chassis, anyway. Step 2 – Disconnect Batteries. Step 6: Disconnect the positive connector Loosen the nut on the positive terminal and disconnect it from the battery. Disconnect Volvo Car Battery. By the time you are through with this article, you'll know the proper way to sever a battery connection without any mishaps. The negative battery terminal is your ground, which keeps you from getting electrocuted when working on the engines, the electrical, and the fuel parts. How to charge a battery. First, find your vehicle's battery. To begin, unplug the negative battery terminal. Is this to be expected, and what can I do to ‘mend -it’ and restore The batery to its normal state ? The battery is just over 1 year (13 months) old. When you disconnect the battery from your car before you leave, you can avoid replacing it and spending money on repairs once you return. Battery disconnect switches cut-off electrical power, help protect against electrical fires and theft when equipment is not in use, provide a reliable shutdown of power during maintenance, and protect batteries from excessive drain. if i don't drive the car for a week it won't start, but if i start it every couple of days it's fine. (1) If you store your boat in a region with cold winters, remove your battery and store at home in a dry location. Make sure that your vehicle is in Park, with the engine shut off and the parking brake on. Remove the cables from the battery terminals. Got a vehicle that only gets used intermittently? Save the battery and prevent theft with this handy device! (Also great if you have a voltage drain in your daily driver that you haven't had time to diagnose yet!). Attach and tighten the positive battery cable. You press the screwdriver or drill bit into the head and try to turn. It’s held down by a retaining system that usually consists of a strap or a metal plate. Car battery chargers run off AC power and provide 12V DC at relatively low voltages, which is the best way to charge a completely dead battery. Before you begin, switch the ignition off and remove the key. This brief guide will explain the best way of going about this. From there, we will present how to reset the car’s computer once the battery is disconnected. Power probe testing device is a faster way know how to test a car battery. Ideally you should make sure the battery is fully charged but unless you have a charger and the time to do this …. Removing the battery from the circuit allows those spikes and transients to travel around, endangering every semiconductor circuit in your car. Remove the Old Battery and Install the New One: Locate the battery - The battery should be located in an accessible part on either side of the car's frame. Next, it needs to be at the 'rearmost' of the car. When the car is off, the battery is not being recharged. Your car’s battery is one of its most important components. The battery pack, which stores energy generated by the engine, motor and regenerative braking, powers the vehicle while it’s idling or moving at low speeds. 2 Just Wait for it to go Off 1. After that, positive lead of the device connect to the positive terminal of your battery. If you're near your car when the alarm goes off — or if remote starting is one of your features — all you have to do is turn the car on to turn the alarm off. Everyone should know how to use a car battery charger as a dead battery is a common problem, especially in the cold winter months. Long time ago I was told to do it this way, don't remember the reason now. Always remove the negative first, then the positive. Make sure to get a good grip. This method will negatively affect the life of the battery, however, so if your battery is new, you should only use this method in an emergency. If your car will be stored in a garage for the winter, disconnect the battery. There seems to be two views about how to do this. I have a 2003 electric Club Car with the "Regen" feature. You have a dead battery. Disconnect the negative cable from the engine block or other ground location. Got a vehicle that only gets used intermittently? Save the battery and prevent theft with this handy device! (Also great if you have a voltage drain in your daily driver that you haven’t had time to diagnose yet!). Lift and secure the car’s hood, then locate the battery. How to Remove Car Battery Terminals. How to pick the best battery for your Hyundai i10 Petrol Car BY Exide Hyundai has well established itself as a popular car manufacturer in the Indian market with its wide range of car models to meet the needs of every consumer. Learn how to install a new battery in your car. Trying to find Battery Disconnect online? Find Battery Disconnect on sale here with the biggest variety of Battery Disconnect anywhere online. As with traditional gasoline power trains, you must disconnect the vehicle’s battery before attempting mechanical or electrical repairs. How to Replace a Reverse Light Before you kick your car into reverse, make sure your reverse lights are working properly. Give your ride a good handwash, polish up that chrome and apply a coat of wax to the paint. Now, unscrew the hold-down mechanism to remove the battery from the tray. Re: how to remove battery? thanks for all the info. The left side has a closed loop through the ECU where Kirchhoffs voltage law easily verifies the voltage across the ECU. Be sure you pull both fuses. So you have to know how to jump start a car safely and properly, so that when/if you ever do run into a dead battery in your car you can get back on the road quickly. com article we'll explain how to disconnect a car battery. Lift out and remove the discharged battery in the direction of. Locate the terminals on the top of the car battery. The video above shows you how to replace the battery in your 2011 Cadillac SRX. He has to do some welding on the car and has to disconnect the battery first. Locating the battery. But then in the boat it was used to connect one, both, or no battery. Remove plastic shield covering battery (remove the small one above the battery to give yourself some leverage point). Thoroughly clean your car, inside and out, before storage. Take a voltage reading for reference and make sure to write it down. To begin, unplug the negative battery terminal. A car battery usually holds 48 amps so if you take that it charges at approximately 1 amp per hour you can work out how long it will take to charge your battery with various amperage chargers. Simply disconnect this line from the battery's positive terminal before moving on. After disconnecting the battery from motherboard, slightly bend the bottom cover to release the tabs. How to Remove Car Battery Terminals. 99, 93% off the usual price of $300. Your car’s battery is important to take care of! It starts your car, keeps it running, and helps power the electrical components. Clean cable ends - Clean the cable ends as needed with the wire brush and battery cleaner as needed to remove any corrosion. I had a problem with my daily driver that I inherited when my wife got a new car about three years ago. Should I remove the battery completely or just disconnect and tape up the negative Stack Exchange Network Stack Exchange network consists of 175 Q&A communities including Stack Overflow , the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. Remove the screws or fasteners holding the battery in place; then Remove the Battery. In order to tell if a battery as an open or shorted cell, simply perform the following tests. This is permanently installed on the battery cable and terminal and allows you to easily disconnect the battery cable each time you want to tow. It is very important to disconnect the wires from the negative plate of the battery post before you start removing the corrosion. Find many great new & used options and get the best deals for 12V 24V 48V Car Boat RV Battery Isolator Disconnect Cut On/Off Rotary Switch AT at the best online prices at eBay!. If your car will be stored in a garage for the winter, disconnect the battery. With no battery in the circuit to act as a buffer, the alternator can put out up to 150 volts, depending on engine rpm. Removing the battery from the circuit allows those spikes and transients to travel around, endangering every semiconductor circuit in your car. Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. Safety of Lithium-ion Batteries Recognizing Battery Capacity as the Missing Link Managing Batteries for Warehouse Logistics Caring for your Starter Battery Giving Batteries a Second Life How to Make Batteries in Medical Devices More Reliable Possible Solutions for the Battery Problem on the Boeing 787 Impedance Spectroscopy Checks Battery. Step 6: Lift out battery. The negative terminal will be marked by a minus (-) sign and black cable, and the positive with a plus (sign) and red cable. But if you’ve got to do it, you might as well do it right and do it fast. You will experience the difference when you use your reconditioned battery in your car. You'll need to remove this bracket to remove the battery. Where is my car battery ? Here is a typical layout, highlighting the car battery and battery clamp along with the red and black battery terminals. Simple answer: Yes Disconnect the negative lead and you’ll be good to go. A car battery is one of the most integral parts of a car and when the battery goes flat, there is nothing you can really do. Cleaning and servicing the car battery terminals is highly recommended and now that you are aware of how to disconnect car battery easily, you will have no difficulty in cleaning your car's battery terminals. Disconnect VPN Premium is an all-in-one VPN, allowing you to browse faster while simultaneously blocking trackers. The G3500 is a 3. For periods greater than two months, also disconnect the grounded battery cable to remove the parasitic load. Also many factory fitted manufacturer stereo's also have the release key mechanism's for removal and refitting and can be removed using the correct specific release keys, there are several different shapes & sizes of Stereo Release Keys depending on the. The car wouldn't start and was towed to a repair shop. is that usual? or is it look like my battery has come to end of. 5 volts, I’m guessing sulfation is already occurring at this voltage…. Check mounting surface for objects or protrusions that could cause damage or wear to the case or cover. If you suspect this is killing your battery during storage, you can either disconnect the battery, or remove the battery from the car entirely. Rechargeable Tool Battery Don’ts. This guide will show you how to change the battery in your car's remote key entry fob. In fact, under certain conditions a car battery may explode while just sitting in a parked car or on a table [source: battery-chargers]. Remove the screws or fasteners holding the battery in place; then Remove the Battery. Reverse the procedure, positive first, negative second, when replacing the cables. With no battery in the circuit to act as a buffer, the alternator can put out up to 150 volts, depending on engine rpm. I usually spend my time on the Camry forum, but I have a question for a friend. If the alternator is putting out too much voltage (15+ volts), it is likely your battery acid will boil over out of the battery. Step 3 – Remove and replace the battery. Replace the battery with the largest AGM (Ca/Ca) or Spiral Wound AGM VRLA battery that will fit with very low self-discharge rates. It is very important to disconnect the wires from the negative plate of the battery post before you start removing the corrosion. Give your ride a good handwash, polish up that chrome and apply a coat of wax to the paint. Disconnect VPN Premium is an all-in-one VPN, allowing you to browse faster while simultaneously blocking trackers. Set emergency brake and turn your car off. Disconnect both car battery terminals. For safety reasons, battery cut-off switches are a valuable—and sometimes mandated—resource. I need to know how to completely disconnect the alarm from the battery so it stops drawing power and killing the car. Remove the Old Battery and Install the New One: Locate the battery - The battery should be located in an accessible part on either side of the car's frame. Even if you've already ruled out obvious things like the headlights and dome light, there may still be a drain in your system. Refer to your car owner’s manual for a fuse box diagram, locate the position of the car alarm fuse, and pluck that fuse out using the tweezer-like tool in your fuse box. Roughly 300$ to be able (and sure) to remove the key once the car is turned off. In some European cars the battery is under the matting in the trunk, or inside the fender of the wheel well. Inspect the bumpers, the undercarriage, even the interior of your car. I just received a call from the dealer, they're preping the car for delivery, they did brakes,rotors,replaced a couple bulbs and wiper blades, and detailed it, he claims they disconnected the battery although Im not sure why. Set it aside, away from the battery. And then connect to the positive and negative leads to the respective terminals. Do it yourself guide to changing a dead battery in a Toyota Camry with step by step instructions on how to disconnect, remove and install a new 24F car battery. How to Safely Work on Hybrid Electric Vehicles. Disconnect the battery then unscrew the brackets holding it in its tray. In some cars, it is openly visible just after opening the hood while in others it might be hidden under a plastic plate. Step 3 — Disconnect the Battery. Next, it needs to be at the 'rearmost' of the car. If you are looking for Disconnect Volvo Car Battery, you've come to the right place. Carefully lift the negative clamp and set aside. Shop 12 battery disconnect now! Wireless Technology For Sale. A damaged battery case can not only prevent the battery from working properly, but will eventually kill it. It is recommended that you DISCONNECT the negative battery terminal before you start charging the battery. Batteries can burst and corrode the terminals in electronic items and toys when they haven't been in use for long periods of time. How to Remove Car Battery Terminals. You can either let the battery run down all the way until the laptop dies or you can set it so that it goes to sleep or hibernates around 3 to 5%. During the life of a car, it is almost inevitable that you will have to disconnect the battery at some point. You just have to disconnect the terminals in the right order, unscrew the nuts and bracket that hold the battery to the plate, and you're all set. All auto articles I’ve read say to disconnect the cords to be sure you clean all the corosion off. First of all, it's important to remember that working on and even just disconnecting a car battery can be dangerous. Mix one tablespoon of baking soda into one cup of water, and stir it together until it’s thoroughly mixed. A healthy battery will show 12. Remove both battery cables (positive and negative) and then connect them together. Like all things, car batteries have their myths - some come from people who mean well but don't know enough about the topic, but some are just pure lies. Hi Guys, Battery ran flat in my BMW x 5 4. How To Disconnect A Car Battery Safely. Charging your battery with a four amp charger will take about 12 hours to get a full charge out of this low amperage. 4 percent of vehicles in the Big Apple. Follow these essential steps and your car will be ready to roll. The terminals on your car battery are an essential component for the function and life of your engine. 7 volts across both terminals when measured with a voltmeter, a simple device that's very handy when diagnosing battery issues. (It's usually black, and the corresponding terminal on the battery is normally marked with a "-" sign). Corroded battery terminals can cause your car or vehicle to not start. Re: Battery Disconnect. (1) If you store your boat in a region with cold winters, remove your battery and store at home in a dry location. Drive the good car up to your car so the car batteries are as close as possible. Switches are generally in the positive side. If not, unplug the negative cable. The only thing the alternator does is recharge the battery - it may have other functions but starting the car is NOT one of them. can i just use a rocker switch? how do i wire it up? what's the easiest way to do this?. car battery, car maintenance, disconnect battery, positive negative terminals When carrying out any electrical work to your car, it is usually necessary to disconnect the battery first. He has to do some welding on the car and has to disconnect the battery first. Again these normally require a 10mm or 13mm socket. use a wire brush to then clean off the surface of the battery compartment to be sure that. Locate the positive and negative terminals on the battery. To ensure that you unhook the battery the safer way, you need to follow the following steps: 1. Remove weather stripping (3/4" thick strip across top of sheet metal between engine and fire wall (just give it a tug to get it going) 2. Now that the secondary power is all set up, it's time to safely remove the battery. Mark Simpson discusses several battery disconnects available from the "Battery Doctor" and installs one in our project car. Disconnect the Battery. This type of connector will pull apart with your hands. After 2 or 3 more starts, the car wouldn't start again. Also many factory fitted manufacturer stereo's also have the release key mechanism's for removal and refitting and can be removed using the correct specific release keys, there are several different shapes & sizes of Stereo Release Keys depending on the. 8is after I left the key on about 4-5 hrs, some interior lights were on and CD Player was on. To disconnect a car battery, start by turning off the engine and opening the hood so you can access the battery. Changing a car battery is easy. Basic Rules for Battery Care & Maintenance: SAFETY PRECAUTIONS. Follow these steps carefully. Don't Miss How To Buy A Car Battery - Buying Guide. Remove the clamp and then remove the battery from the vehicle. 4 kWh representing a large difference in use of electricity in hybrid cars. If the voltage is close to that then you know your alternator is working. Preparations for acid cleaning Before cleaning with acid, it is necessary to check special equipment to see if it is in good condition or not. Remove the connector holding the battery wires to the battery. Can we disconnect the car battery to allow the boot to remain open for the day to air out? We do not know how to access the bulbs in the car panels and do not want the battery to drain. Your car's battery is important to take care of! It starts your car, keeps it running, and helps power the electrical components. Remove the connector holding the battery wires to the battery. A bad battery can put a. He told me after the battery was disconneted the car needs to be driven to reset the computer in order to pass inspection. Step 3 - Remove and replace battery. If your car has a positive ground, you would loosen the positive cable first (your manual will tell you which your car has and the correct order for removing battery cables). Batteries can burst and corrode the terminals in electronic items and toys when they haven't been in use for long periods of time. How to revive a dead car battery with aspirin. Do this with a spanner by removing the negative terminal first (which is anchored to the black cable) and then the positive terminal (red). Keep in mind that even when a car is not in use, certain components—the clock and on-board computer, among other electrical systems—will still drain the battery. With a 10mm socket wrench undo the negative terminal, and remove it from the battery. First, try starting your car at night with the headlights switched on. For example, if the key turns and the car doesn't start, it's likely the battery that's the problem. Disconnect all add-on components wired directly to the battery or positive main engine block terminals. The first step is to remove the old battery. How to Test for a Bad Battery. There seems to be two views about how to do this. Remove the battery, being careful not to let the positive terminal touch any metal part of the car. battery as well, using the battery terminal puller device.