What happens if I connect my car battery backwards?
When a car battery is connected backward, a fuse designed to protect vehicle electronics should blow. If your vehicle doesn’t have a fuse (almost all cars do) designed for this purpose, you will send electrical current backward through systems in your car, including ECU, transmission control unit, and more.
What should you not do when jumping a car?
8 Things You Should Never Ever Do When You Jump Start Your Car
- Don’t smoke.
- Not wearing gloves and eye protection.
- Not reading the owner’s manual.
- Don’t jump start the car if the battery is cracked or leaking.
- Not putting the car in Park.
- Don’t let the cables dangle from the car.
- Don’t use poor and low quality cables.
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.
What did the tow truck driver do with the jumper cables?
As soon as the tow truck driver noticed the smoke coming from my battery he immediately switched the jumper cables to the proper polarity. Then I started my car and it started right up, but the radio was no longer working and neither was the dome light.
What happens if you hit a jumper cable?
Damage to the Jumper Cables Jumper cables are not designed to carry the huge surge of electrical current, and will quickly heat up to very high temperatures. This can melt the insulation on the cables and potentially expose people to direct contact with the electrical cables.
What should I do if someone jumps my car?
Immediately shut off my car and disconnected everything. The car seemed to be working okay afterwards and later I even helped him jump (with the cables connected correctly) because there was no other option for him. My question is, what are the chances that any serious damage was done?