Cars Specification

1. Turn your 540i off and remove the key from the ignition.
2. Lift the trunk on your 540i. Open the battery and fuse compartment located on the passenger side of the trunk.
3. Loosen the negative battery clamp from the battery, using the 10mm socket wrench. The negative clamp is marked with a minus sign. Remove the clamp and wait for one minute.
4. Reattach the clamp to the battery and tighten it with the 10-mm socket wrench.
5. Start your 540i and wait for all of the startup warning lights to go off. Confirm that the check engine light goes off too.
6. Place the cover back on the battery and fuse compartment. Close the trunk.

1. Turn on the car so the engine is running.
2. Locate the R or Reset button to the left of your instrument panel. Press the reset button twice. In the display screen in your instrument panel, you should see the amount of time left before your next oil change.
3. Turn off the car.
4. Hold the reset button down and simultaneously turn on the engine again. Hold the button down until the display screen beeps. You will see the FSS light reset.

1. Turn the ignition switch to the On position.
2. Press the Odo/Trip button until the odometer is put into ODO mode.
3. Turn off the ignition.
4. Press and hold the Odo/Trip button. Turn the ignition switch to the On position. Hold the Odo/Trip button for two seconds. Release the Odo/Trip button and then immediately press it again, release it, press it, release it and then press it and hold it. Hold the button until the leveling information is displayed on the odometer, about five seconds.
5. Release the Odo/Trip button.
6. Press and hold the Odo/Trip button until the odometer display reads 1, which indicates the reset process has begun.
7. Release the Odo/Trip button when the reset process is complete, which is indicated when the odometer display returns to normal.
8. Turn off the ignition.

1. Put the key into the ignition and turn the switch to the on position.
2. Watch for the airbag light to turn on. It will stay illuminated for seven seconds and then shut itself off. After it shuts off, immediately turn the switch off and wait three seconds.
3. Repeat Steps 1 and 2 two more times.
4. Start the engine. The SRS light should come on for seven seconds, and then shut off and stay off. The airbag light has been reset.