These vehicles are equipped with:
- – a system for automatically adjusting each headlight depending on changes in body height, acceleration, braking, and vehicle speed;
- – a headlight washer.
Do not turn on the bulb when it is not inserted into the headlight (this is dangerous for your eyesight).
Xenon lamps light up when voltage is applied 20,000 V and operate at an alternating voltage of 85 V.
Wait until the ECU and high-voltage unit have cooled before removing them.
Disconnect the battery before performing any work.
The vertical beam angle is adjusted depending on the vehicle speed.
At speeds above 30 km/h, the illumination range increases.
Xenon lamps do not have a filament.
The light in these lamps is generated by two electrodes enclosed in a quartz bulb containing compressed gas (xenon) and mercury vapor.
Each headlight is equipped with an ECU built into the high-voltage unit.
This system is tested using diagnostic tools.
ECU unit – unit High-voltage" and xenon lamps can be replaced separately from the headlights.
The actuator (stepper motor) cannot be removed from the headlight.
If the actuator is faulty, the headlight must be replaced.
Removing and installing headlights with xenon lamps is the same as headlights with halogen lamps.
Fig. Lighting system block diagram with xenon lamps: 1 - rain and light sensor; 2 - switch of exterior lighting, direction indicators and fog light; 3 - UCH; 4 - information on switching on low - high beam headlights (from the protection and switching unit); 5 - information on the vehicle speed (from the ABS ECU); 6 - the height of the front part of the body (front sensor); 7 - the height of the rear part of the body (rear sensor): 8 - diagnostic line K; 9 - the unit "ECU - high voltage unit" (left headlight); 10 - lamp; 11 - actuator of the left headlight corrector; 12 - unit "ECU - high voltage unit" (right headlight); 13 - actuator of the right headlight corrector; 14 - Lamp
Replacing Xenon Headlight Bulbs
Removal
Disconnect the wires from the battery terminals, starting with the negative terminal.
To replace the xenon bulb, you must remove the headlight.
Fig. Removing a headlight with xenon lamps: 1 - latch
To do this, press the latch and cover (Fig. 3).
Fig. Removing the high-voltage unit: 1 - high-voltage unit, 2 - headlight range control actuator
Remove the high-voltage unit by turning it 1/8 of a turn counterclockwise (Fig. 4).
Disconnect the bulb retainer.
The headlight range control actuator (stepper motor) is not removable.
If the actuator is faulty, the headlight must be replaced.
Installation
Hold the bulb by the base.
Avoid touching the bulb with your fingers. If this happens, wipe the bulb with a soft, lint-free cloth dampened with alcohol.
Install the bulb (the protrusion should be positioned opposite the groove in the headlight) (Fig. 4).
Fig. Xenon Bulb
Install:
- – Bulb retainer;
- – High-voltage unit;
- – Power supply wiring harness.
Use only certified D2S bulbs.
Install the headlight.
Adjust the headlights.
Removing and Installing the Xenon Headlight Control Unit
Removal:
Disconnect the battery.
Remove the headlight.
To avoid scratching the headlight, place it on a clean cloth.
Fig. Removing the ECU - High Voltage Unit: 1 - Mounting Screws
Remove the mounting screws of the "ECU - High Voltage Unit" unit (Fig. 6).
Disconnect the connectors.
Installation:
Fig. Connecting the Xenon Headlight ECU Connectors
Connect the connectors (Fig. 7).
The high-voltage wire harnesses for the right and left headlights are different (the left headlight connector is brown, the right headlight connector is blue).
Be sure to replace the gasket when replacing the ECU.
Tighten the screws securing the "ECU - high-voltage unit" assembly to the specified torque of 12 Nm.
Install the headlight.
Connect the battery. Be sure to replace the ECU and the gasket.
Calibrate the ECU.
Adjust the headlights.