What happens if hook up battery backwards?
Installed new battery backward, the car won’t start. The car will no longer start. Similar symptoms will be experienced when you try to jump-start a dead battery but accidentally connect the jumper cables backward. When a car battery is connected backward, a fuse designed to protect vehicle electronics should blow.
Does order of jumper cables matter?
It is important to connect the cables in that order, and it is safest to connect the negative (black) clamp as far from the battery as possible, in order to reduce the risk of sparking that could cause a fire or explosion.
What is the correct order to safely attach jumper cables?
Attach the red jumper cables first. Start by clamping one red cable to the positive side of the battery that won’t start. Then attach the other red clamp to the positive side of the working battery. Next, clamp one black cable to the negative side of the working battery.
Why does my car not start with reversed jumper cables?
Q: Reversed jumper cables and now car won’t start even with a new battery. My car has an old battery that died. When jumping off the cable got reversed causing the battery to spark and the cables to get hot. I purchased a new battery, but the car will not start.
How to do a cold reboot on a VW?
In this case, you need to perform a cold reboot, which can be done in the following steps: 1 Disconnect both battery cables 2 Tap both cables together 3 Leave the cables disconnected for fifteen minutes 4 Reconnect the cables to the battery
What to do if your VW wont start after a battery change?
Leave the cables disconnected for fifteen minutes If this doesn’t yield results, then you can try this alternative method to get your key to reprogram itself: Ensure that the battery is being charged with a charger Leave the key in the ignition with the battery on and the engine off for an hour