Should you disconnect battery when working on car?
Two reasons: To reduce the possibility of short-circuiting the battery by removing the connection to ‘ground’ To make sure everything is switched off and unable to function while you’re working on it. You don’t want, for example, the electric fan to suddenly kick in while you’ve got your hands in there…
How long do I leave battery unhooked to reset computer?
Because some of the electrical current is preserved in the computer for a while afterward, most sources recommend leaving the battery disconnected for at least 15 minutes to make sure the computer forgets the code before you reconnect the battery.
How do you remove the negative cable from a car battery?
For safety purposes, always proceed to disconnect the negative cable first. Use your wrench to loosen the nut that connects the negative terminal of the battery, then proceed to remove the nut completely. Next, lift the terminal off the battery post, and place it safely beside the battery,…
What to do when you disconnect battery from car?
If you’re disconnecting the negative cable and leaving the battery in place, be sure to push the cable out of the way. If there’s any chance that it might spring back into place and touch either battery terminal, use zip ties to hold it in place.
Why do you remove the negative battery terminal first?
By removing the negative battery cable you are disconnecting the battery from the chassis of your vehicle. If you begin to remove the positive side before the negative and your wrench would make contact with any part of the vehicle, then you could cause a short in the system.
How long should the cable be to disconnect a negative battery?
The cable cord should be long enough to hang over the outside of the hood and down the side of the car. Usually the cables are about 1 foot or so in length. Secure the cable with a piece of tape to keep it in place while you perform whatever work you had planned.