BMW 7 Series: Service Information

Adjusting Headlights

The same procedure as before can be adopted for adjusting the lights. On a vehicle with the adaptive headlights optional extra the light switch must be in position "2".

If the lights have been switched on by the automatic headlights function, the urban beam pattern will be active.

The headlights can only be correctly adjusted when they are set to the single-carriageway beam pattern.

NOTE: When the lights are set to the urban beam pattern, the off-side headlight turns slightly outwards and is simultaneously slightly lowered. If the lights are adjusted when set to this beam pattern, they will dazzle oncoming traffic when switched to the single-carriageway and highway beam patterns.

Therefore, you should always set the lights switch to position "2".

When replacing headlights, make sure to use genuine BMW parts only.

NOTE: It is essential to follow the repair instructions.

Replacing Components

Different repairs may be made during the life of the vehicle. The repairs may mean that components for the adaptive headlights have been installed with different software and hardware states.

New parts and/or used parts are used with the components already installed in the vehicle.

The replaced components must definitely be adapted to the vehicle.

The components below are some of those that could have been replaced during servicing:

• Footwell module
• Headlight driver module
• Bi-xenon headlights.

Footwell Module

Follow the repair instructions when replacing the footwell module. Make sure that only genuine BMW spare parts are used. Only genuine BMW spare parts guarantee correct functioning of the headlights. In the case of a straight swap with a different footwell module there is no guarantee that the replacement will not cause malfunctions in the exterior lighting system.

Diagnosis

Diagnostic Mode

The exterior lighting system must be set to diagnostic mode for different diagnosis orders. These diagnosis orders may be:

• Read out of the relevant bus signals when stationary
  • Road speed
  • Yaw rate
  • Steering angle
• Check of signal plausibility
• Check of switch-on conditions
  • Status of the rain/driving lights/solar sensor
  • Status of the rain/light/solar/condensation sensor
  • Status of the high-beam headlight assistant
  • Status of the light switch.

Missing or non-plausible bus signals are saved in the footwell module as a fault. Fault types are saved in the headlight driver module.

Access to the headlight driver module is achieved via the footwell module.

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