How Do You Reset Electronic Control Unit (ECU) For Vauxhall Vectra 1999-2000 Year (V Reg)?
First, try turning the key on and off 21 times with a 5 second pause. If that doesn’t work, disconnect the battery overnight. (A residual charge remains so it needs to be more than just a few hours.) Remember to have your radio and alarm codes ready for afterwards. If that doesn’t work you probably need a new sensor, you’ll have to get a garage to connect the device that tells them which sensor, or even a new ECU. Sensors are cheap, the ECU is expensive.
