Clearing Codes

When repairs have been completed, malfunction light will go out. To clear trouble codes from memory, start, stop and restart engine 5 times. If BMW System Tester is available, trouble codes can be cleared by performing (999). An optional method is to turn ignition off, disconnect negative battery cable and reconnect cable.

CAUTION: Disconnecting negative battery cable may also erase all pre-selected settings for radio, seat memory, trip computer, etc.

If malfunction light is still on or flickers, other faults are present. Complete testing can only be performed with the BMW System Tester.

If no hard fault codes are present and vehicle starts, proceed to TESTS W/O CODES article for diagnosis by symptom (i.e. ROUGH IDLE, NO START, etc.) or intermittent diagnosis procedures.