General information
The ESPACE can be equipped with xenon lamps for low beam headlights.
In accordance with European standards, these vehicles are required to be equipped with a system for automatically adjusting the headlight range depending on the vehicle's ground clearance and the presence of headlight washers.
Warning: It is prohibited to install headlights equipped with xenon lamps on models not designed for such systems.
Xenon lamps do not have a filament. The light of these lamps is generated by two electrodes enclosed in a quartz bulb containing compressed gas. An electronic or ballast module built into the headlight is powered by the car battery and first generates the 20,000 V voltage required to initiate the discharge, and then an alternating voltage of 85 V used to maintain the lamp. The automatic headlight beam correction system must maintain (when changing the vehicle load) constant beam angle by comparison with the initial value adjusted at the factory or during warranty service.
The time it takes to perform this correction is not always the same
- 2 min at low amplitudes.
- 30 sec with large load changes If problems occur, the control lamp on the instrument panel lights up and the system switches to the backup mode In the case where the low beam headlights are on. when the ignition is turned off, the correction system directs the headlights downwards.
In the event of a system malfunction, the low beam headlights are set to the lowest position.
The system includes:
- - two special headlights, including a classic lamp for the side light, a lamp for the high beam of the headlights of the H7 type, a gas-discharge lamp for the low beam of the D2S type, located behind the lens (A, Fig. 15.26);
- electronic unit (ballast), built into the headlights (D, Fig. 15.27);
- electronic unit (E, Fig. 15.28), automatic headlight adjustment control;
- two height sensors (F. Fig. 15.29, 15.30), located under the car;
- two actuators for height adjustment (G, Fig. 15.27), designed for 21 positions;
- the indicator lamp for the malfunction of the automatic headlight height correction system located on the instrument panel.
When the ignition is turned on, the control lamp lights up for 3 seconds, then turns off, flashes if the diagnostic device is in dialogue with the electronic unit and lights up continuously if there are problems in the correction system.
Fig. 15.26. Location of the low beam gas discharge lamp type D2S behind the lens (A)
Fig. 15.27. Location of the electronic unit (D), actuator (G) for adjusting the headlight height and cover (11)
Fig. 15.28. Location of the electronic unit (E) controlling the automatic correction of the headlight adjustment
Fig. 15.29. Location of the front ride height sensor (F) on the front left side under the vehicle
Fig. 15.30. Location of the front ride height sensor (F) on the rear right side under the vehicle
Removal
- Disconnect the cable from the negative battery terminal.
- Disconnect the connectors on the headlight and turn signals.
Note: Removing the radiator grille and turn signals is the same.
- Remove the two headlight washer mounting bolts (fig. 15.31).
- Unscrew the two nuts and remove the headlight.
Fig. 15.31. Location of headlight washer mounting bolts (A) and headlight mounting nuts (B)
Installation
- Installation is carried out in the reverse order of removal.
- After installing the headlights, it is necessary to initialize the system and adjust them.