Itselleni kirjoitan ylös kun en ikinä muista tätä eli omassa autossa ei ole 4c-alustaa joten vida ei näe myöskään SUM-moduulia joten en voi kalibroida sitä. Vasemmassa takatukivarressa oleva anturi toimii ilman sumia seuraavasti:
Automatic range adjustment (Bi-Xenon)
There are two motors, one on each headlamp, which angle the headlamps upwards or downwards to control the range of the beam. The motors are on the rear of the headlamps.
The motors are controlled by signals from a position sensor at the rear axle. The sensor detects the angle of the car under different load conditions and sends this information via the rear electronic module (REM) so that the central electronic module (CEM) can determine whether the lamps need to be raised or lowered.
For further information about the position sensor, see Design and Function, rear electronic module (REM).
There are diagnostics for the headlamp range adjustment.
The sensor is described as follows:
Position sensors
Inductive sensor that transmits an analogue signal (voltage) to the rear electronic module (REM) (not vehicles equipped with Four-C (Continuously Controlled Chassis Concept)). On vehicles with Four-C, the signal travels via the suspension module (SUM).
And it also says:
Automatic level control
Sensor
The following applies to cars without Four-C (Continuously Controlled Chassis Concept)
An inductive position sensor reads the angle between the body and the left rear control arm. The angle is a indication of how much the vehicle is leaning (chassis height) and depends on weight distribution.
The sensor is mounted slightly differently for FWD and AWD.
The rear electronic module (REM) reads off an analog signal (0.5 - 4.5 V) from the position sensor and converts it to an angle value (±35°), which is sent to the central electronic module (CEM).
A fully loaded vehicle generates a signal of 0.5 V, which corresponds to negative 35°.
The central electronic module (CEM) regulates the headlight levelling motors (PWM signal) to adjust the headlights vertically.
Level control
Regulation at speeds below 4 km/h (2.5 mph)
When the ignition is switched on, the position sensor is read and the headlight levelling motors adjust the headlights.
Regulation at speeds above 4 km/h (2.5 mph)
The headlights are regulated if there are great angle changes while driving. Regulation is time-dependant so that the system does not react to short changes, such as unevenness in the road surface.
Calibration
The position sensor must be calibrated after work on the rear suspension. Perform calibration as described in the tab DIAGNOSTICS/VEHICLE COMMUNICATION, Rear electronic module (REM).
Caution! Calibration must be carried out after work such as removing/installing the sensors and replacing the sensors, rear axle, bushings, shock absorbers or springs. In vehicles with Four C, calibration is carried out via the suspension module (SUM). Beam adjustment is carried out conventionally (via adjustment screws by the headlight). The light switch must be in the "on" position while calibrating.
Lähde VIDA ja
https://forums.swedespeed.com/showthread.php?597867-Position-Sensor-on-the-passenger-side-missingEli pitää käydä tarkistamassa että kun otan sen sensorin varren irti ja kääntelen, liikkuuko valot, jos niin anturi toimii ja pitää kiinnitys tarkistaa sellaiseen tasoon että lamppujen säätöruuveista saa valot silloin optimaaliseen asentoon. Oma käsitykseni on että säätöruuveja ei saa vetää liian rajoille koska näissä välillä umpiosta kai tasosäätötanko irtoaa, mutta en tiedä varmuudella toimiiko noin. Jossain perusasennossa saisi olla ja sit katsoa vidasta REM-yksikön optiot saako kalibroitua siellä auton ollessa tasamaalla. Sit loppusäätö umpion ruuveilla. Olen saanut tasamaalla ruuvisäädöllä katsastuksessa kelpaavia tuloksia kun kyykin 10 metriä auton keulasta pää umpion tasolla ja valot ei ihan häikäise siihen kohtaan.
