BMW E34 reading and clearing fault codes
535i540iM5
What reads the E34 fault codes?
The E34 needs an ADS cable: reading with the INPA software requires it, a USB cable does not work and an E-ville cable is not suitable. INPA also needs suitable scripts. On the M5, reading also works with a DIS tool.
How are the E34 ASC fault codes read without a diagnostic tool?
1. Switch the ignition off. 2. Press the ASC button and the brake pedal to the floor. 3. Switch the ignition on and keep the buttons held down. 4. The ASC light flashes the fault codes, from which the fault is located.
How is the fault memory cleared?
Disconnect the battery negative terminal for a few hours or overnight. Clear the memory only after the repair, so that the codes tell you about the new situation.
Related articles
BMW E34 power windows, sunroof and central locking stop workingBMW E34 hunting or surging idleBMW E34 heater blows only hot or cold air (water valve)BMW E34 M5 (S38) rough running and hesitationBMW E34 clutch and flywheel: most common faultsBMW E34 fuel pump, relay and fuel pressureBMW E34 automatic transmission slipping and most common faultsBMW E34 ignition coil and spark plug fault: one cylinder dead