How do you reset a BMW ECU?

My car won’t start. I was doing some research online, and it seems like the ECU is probably the issue. How do you reset a BMW computer to factory settings?

Answer
Impressive sleuthing skills! You can reset a BMW ECU by unplugging the negative battery cable for 10 to 15 minutes. This should be enough to reset the ECU in most BMW models.
If this doesn’t work, you can also try jumpstarting your car to reset it. This will also help if the issue is a drained battery!
If you still have problems getting your car to start after jumping the battery, however, you’ll need to talk to a mechanic to learn more about what’s going on.
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Liz Jenson
Answered on Jan 12, 2022
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