Level Control System Sensor: Notes
General Information
Vehicles With Electronically Controlled Damping And/Or HID Headlamps Have Standard Automatic Headlamp Range Control. Refer to HEADLAMP RANGE CONTROL ADJUSTER -E102-, REMOVING AND INSTALLING .
To function properly, the electronic damping and automatic headlamp range control need information about compression travel or rebound travel at the front and rear suspensions.
For this, the position of the left/right track control arm in relation to the body is transferred via a coupling rod to Left Front Level Control System Sensor -G78- and Right Front Level Control Sensor -G289-. These transmit electrical signals to the electronic damping control module -J250- and/or left/right high-intensity gas discharge lamp control module -J343/344-.
Left/Right High-Intensity Gas Discharge Lamp Control Module, Servicing, refer to LEFT/RIGHT HID HEADLAMP CONTROL MODULE -J343- / -J344-, REMOVING AND INSTALLING .
At the rear axle, these signals are transmitted from the left rear level control system sensor -G76- and right rear level control system sensor -G77- to the electronic damping control module and/or the left/right high-intensity gas discharge lamp control module.
These signals are required for determining vehicle level.
The headlamp range control responds automatically to changes in the vehicle level.
The vehicle level can change in the following situations:
- Trailer Mode
- Different load conditions; vehicle empty, vehicle partially or fully loaded
Always program the control position on vehicles with electronic damping and check the headlamp adjustment if:
- The track control arm has been removed and reinstalled or replaced.
- The subframe was replaced.
- Installation work has been performed on the level control system sensor.
- The level control system sensor has been replaced.
- The threaded connection for coupling rod of level control system sensor was loosened at track control arm.
Headlamp Basic Setting, refer to HEADLAMP, ADJUSTING .
If the vehicle has electronically controlled damping, then the control position must be programmed. Refer to CONTROL POSITION, PROGRAMMING USING VEHICLE DIAGNOSTIC TESTER .
If the control position was reprogrammed on vehicles with lane assist, the directional stabilization assistance control module -J759- must be recalibrated. Refer to LANE ASSIST CALIBRATION PROCEDURE .