How do you disconnect a car battery from the engine?
First, pull out the negative cable and secure it to one side of the engine with a cable tie. Next, repeat the above two steps with the positive terminal on the car battery. Once the positive cable has been undone, secure it with a cable tie.
How long should battery be disconnected to reset ECU?
1 Open up the hood. 2 Remove the positive terminal cable from the battery using your pliers or wrench. 3 Go to your fuse box in your car, and look at the diagram. Select the fuse that is labeled “ECM” and remove this fuse. 4 Keep the car disconnected like this for two to three minutes to clear the computer’s memory.
How do you remove the negative connector from a car battery?
Pull the negative connector from the battery after you’ve loosened the nut. Push it aside so it is unable to make contact with the battery while you’re doing your work. If the cable is seized to the battery post, a special battery cable removal tool may be needed to remove the negative connector. Ask your local auto parts store or mechanic.
What should I do if my car battery cable is seized?
If the cable is seized to the battery post, a special battery cable removal tool may be needed to remove the negative connector. Ask your local auto parts store or mechanic.
Do you need to know before you disconnect a car battery?
So, before you disconnect a car battery; there are things you need to know. Battery voltage MUST be maintained to the (PCM) and other modules; while the battery is disconnected. NEVER: disconnect the car battery; while the engine is running or the ignition key is turned on.
How to disconnect a car battery to reset the computer?
Different cars will have different procedures, but with most, just driving the car will do the trick. If you use the baking soda mixture instead of cleaner, mix 1 tablespoon of baking soda into 1 cup of water. Thoroughly rinse the battery with clean water to remove all of the solution.
What happens when you remove cable from car battery?
Removing Cable From Car Battery So, disconnecting the car battery to reset the (PCM) on late model vehicles; can do more than just erase the keep alive memory. It can also erase vital learned information that is; absolutely necessary for other modules to function normally.
What to do when your car battery drains?
Start with a fully charged battery. If yours is low, use a battery charger, or have a friend assist with jumper cables from a good battery. Recreate the same configuration as when the battery drains overnight. Meaning, shut everything off, lock the doors, and take a key with proximity sensor away from the vehicle.