What happens if I disconnect my car battery?
Disconnecting your car battery will not cause any permanent damage to your computer or ECU (electronic control unit), but it can have some adverse effects. Those include canceling your preset radio stations, forgetting learned shift points, and your car’s ideal fuel/air mixture.
Which terminal do you disconnect first when removing a car battery?
When removing the old battery, remember to first disconnect the cables from the negative terminal, which is usually black and has a minus (-) sign then disconnect the cables from the positive terminal, which is usually red and has a plus (+) sign.
How long to disconnect battery from Toyota Camry?
How long you should disconnect the battery is a matter of debate. To be safe and make sure the process works, leave it disconnected for about 15 minutes to ensure that all of the backup memory has been erased. Figure 2. Toyota Camry battery.
What should I do after resetting the ECU on my Toyota Camry?
All that’s left is to reconnect the negative terminal of your car’s battery by reattaching the battery cable to the terminal and tightening the nut to ensure a solid as well as complete connection. Some people report that their engine runs a little rough or idles poorly after they have reset the ECU.
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’s the best way to disconnect a car battery?
Clean any corrosion off of the battery and terminals with a can of spray-on battery cleaner. Disconnect the negative battery cable and then the positive cable with a combination wrench. Clean the battery posts and terminals with the post and terminal cleaning tool, so you have a good connection when you’re done.