How to Reset the Service Light in a BMW E34


1. Turn the ignition off. Open the hood.
2. Twist open the cap of the data link connecter, located directly in front of the engine.
3. Bend the paper clip into a 'U' shape. Insert one end of the paper clip into port #7. Insert the other end into port #19. Each port has a small number next to it.
4. Turn the ignition switch to 'ON' without starting the engine.
5. Remove the paper clip from both ports after the ignition has been on for five seconds.
6. Replace the cap to the data link connector.
7. Turn the ignition off.