- a system for automatically adjusting each headlight depending on changes in body height, acceleration, braking and vehicle speed;
- headlight washer.
Attention! Do not turn on the lamp when it is not inserted into the headlight (it's dangerous for the eyes).
Attention! Xenon lamps light up at 20,000 V and operate at 85 V AC.
Attention! Before taking off «node» ECU and high voltage unit», wait until they cool down.
Attention! Disconnect the battery before carrying out any work.
Note. The angle of inclination of the light beams in the vertical plane is adjusted depending on the speed of the vehicle.
Note. At speeds above 30 km/h, the illumination range increases.
Xenon lamps do not have a filament. Light radiation in such lamps is generated by two electrodes enclosed in a quartz flask containing compressed gas (xenon) and mercury vapours.
Each headlight is equipped with an ECU built into the high voltage unit.
This system is checked using diagnostic tools.
Knot «ECU - high voltage unit» and xenon bulbs can be replaced separately from the headlights.
Attention! Actuating mechanism (stepper motor) can't be removed from the headlight.
Attention! If the actuator fails, the headlight must be replaced.
Removal and installation of headlights with xenon lamps is carried out in the same way as headlights with halogen lamps.
Pic. 7.20. Block diagram of a lighting system with xenon lamps: 1 – rain and light sensor; 2 - switch for outdoor lighting, direction indicators and fog light; 3 - CECBS; 4 - information about the inclusion of low - high beam headlights (from the protection and switching unit); 5 - information about the speed of the car (from ABS); 6 - height of the front part of the body (front sensor); 7 – height of a back part of a body (rear sensor); 8 - diagnostic line K; 9 - node «ECU - high voltage unit» (left headlight); 10 - lamp; 11 - the actuator of the corrector of the left headlight; 12 - node «ECU - high voltage unit» (right headlight); 13 - the actuator of the corrector of the right headlight; 14 - lamp