HID Headlamps

HID Headlamps

=> [ Headlamps With Cornering Lamp ]

=> [ Dynamic Cornering Lamp Motor ]

=> [ Swivel Module Position Sensor ]

=> [ Low Beam Reflector Motor ]

Headlamps With Cornering Lamp

• Before working on HID headlamps and cornering lamps, always switch off headlamps and bring ignition key or ignition/starter switch into position 0 (preliminary engaged position).

• Automatic Headlamp Range Control and cornering light in HID headlamps have On Board Diagnostics (OBD).

• Familiarity with the function and operation of the lighting system is essential in the event of customer complaints.

• Additional information:

Refer to Owner's Manual.

General Description:

Main headlamps with gas-discharge lamps and cornering lamps (AFS = Adaptive Front lighting System) have Bi-Xenon function.

Gas discharge lamps generate only the low beam headlamp in standard Xenon headlamps. Bi-Xenon allows one gas-discharge lamp to generate low beam and high beam headlamp. For this purpose, an electro-mechanical adjuster (Left Low Beam Reflector Motor (V294) and Right Low Beam Reflector Motor (V295)) opens the dimmed region of low beam headlamp when high beam function is operated and a high beam light emission results.

For this reason, the high beam is also adjusted automatically with the low beam on Bi-Xenon headlamps.

HID headlamps with cornering lights do not have auxiliary high beams.

The cornering light system has the following functions:

• Swiveling low beam and high beam (dynamic cornering lamp) from vehicles speeds above 10 km/h and steering wheel angle.

• Cornering lamp (static cornering lamp) at sharp curves (curve radius < 500 m) or on turning-off and vehicles speeds below 50 km/h.

DTC Recognition and Display:

Automatic headlamp range control, cornering lamps and vehicle electrical system control are equipped with On Board Diagnostic (OBD) which assists troubleshooting of main headlamps with HID lamps and cornering lamps.

The "Guided Fault Finding" function is to be used for troubleshooting of one of the systems described.

• The indicator light amp failure lights up in instrument cluster when headlamp range control or Adaptive Front lighting System (AFS) system malfunctions => [ (Item 21) Lamp Failure Control Lamp ] Instrument Cluster Indicator Lamps.

Dynamic Cornering Lamp Motor

Left Dynamic Cornering Light Motor (V318) and Right Dynamic Cornering Light Motor (V319) are located inside the headlamp and must not be removed.

If a failure occurs, the entire headlamp must be replaced. Refer to => [ Headlamps ] Headlamps.

Swivel Module Position Sensor

Left Swivel Module Position Sensor (G474) and Right Swivel Module Position Sensor (G475) are located inside the headlamp and cannot be replaced or adjusted separately.

If a failure occurs, the entire headlamp must be replaced. Refer to => [ Headlamps ] Headlamps.

Low Beam Reflector Motor

Gas discharge lamps generate only the low beam headlamp in standard Xenon headlamps. Bi-Xenon allows one gas-discharge lamp to generate low beam and high beam headlamp. For this purpose, an electro-mechanical adjuster (Left Low Beam Reflector Motor (V294) and Right Low Beam Reflector Motor (V295)) opens the dimmed region of low beam headlamp when high beam function is operated and a high beam light emission results.