What happens if you touch the positive and negative cables together?
See all 2 photos Connecting the positive and negative battery cables together for approximately 5 minutes will drain all of the capacitors in the computers and forces them to cold reboot. This is a very common fix for communication problems.
What Does touching the battery cables together do?
Touching both the positive and negative will discharge what ever remaining power is in the ECU. Even after your battery is removed, touching the 2 terminals together (with out even having any source of power) you will even create a small spark, draining what’s left.
What should I do if my car battery cables are disconnected?
With the battery cables disconnected, you can safely perform repairs on electrical components of the vehicle. If you just need to put in a new car battery, it can be done in a few simple steps. After the battery is disconnected, unscrew the brackets that hold it in its tray. Lift the battery straight up, out of its tray.
What happens when two battery cables are disconnected?
If both battery cables are disconnected from the battery and the terminals touch, nothing electrical will happen because the cables are mechanically isolated from an electrical source.
How do you remove a negative battery connector?
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. Follow the same procedure to disconnect the positive terminal. After removing it from the terminal, don’t let the positive connector touch any metal part of the car.
What happens if you disconnect a negative cable on a boat?
If the terminal of the negative cable you disconnected to perform maintenance on your boat were to come in accidental contact with the battery’s negative post, the boat’s circuits would remain charged as if you had never disconnected the battery.