General information
In accordance with European standards, these vehicles are required to be equipped with a system for automatically adjusting the headlight beams in the vertical plane depending on the height of the body and headlight washers.
Warning! It is prohibited to install headlights equipped with xenon lamps on models not designed for such systems.
Xenon lamps
These lamps do not have a filament. Light emission in such lamps is generated by two electrodes enclosed in a quartz flask containing compressed gas (xenon). The electronic unit built into the headlight is powered by a car battery (12 V) and initially generates a voltage of 20,000 V, which is necessary for ignition, and then an alternating voltage of 85 V to maintain its glow.
Automatic headlight adjustment depending on the vehicle height
The automatic headlight beam correction system must support (when changing the vehicle load) constant angle of inclination of the light beam by comparison with the initial value set at the factory or at the service station.
This system can be diagnosed using diagnostic tools.
Each time a fault is deleted from the electronic unit's memory, the actuators are moved downwards.
Description
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Text provided by an online resource: www.RENAULTBOOK.ru
The system includes:
- two headlamps equipped with a conventional side light bulb A, a high beam bulb type H1 B, a xenon low beam bulb C type D2R and an orange direction indicator bulb D;
- two electronic units built into the E headlights (one per headlight);
- rear body height sensor F, located on the left side of the vehicle's underbody. It detects the height of the body and sends a corresponding signal to the sensor/ECU;
- front sensor/ECU G, registers the height of the front part of the body. The ECU adjusts the headlights depending on the change in body height during acceleration, braking or changes in the vehicle load;
- two special actuators for adjusting the H beam of the headlights, installed on the rear side of each headlight unit.
Note: The vehicle speed signal is used to change the beam angle at high speed.
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