Park Assistent Diagnosis

Component Arrangement

Component Arrangement:

Function of individual components

[1A,1B]- Shift lever
The Park Assistent is activated by moving the shift lever into reverse (shift lever position R) with the ignition switched on. The shift lever must be in reverse gear during diagnosis on this system, as otherwise the control module of the PST 2 cannot be read out.

[2] - Control module
The control module is installed under the driver's seat and is protected by means of a cover plate.

[3] - Loudspeaker in instrument cluster
The loudspeaker is integrated in the instrument cluster and is actuated by the Park Assistent control module. The loudspeaker emits the following signals:

Signal type Tone type
System readiness 0.5 sec. continuous tone, 1200 Hz.
Fault signal Continuous tone whenever just switched on, 600 Hz.
Obstacle detection Signal tone with tone break. Tone break is distance dependent. Continuous tone from distance of 30 cm, 1200 Hz.

[4] - Sensors for Park Assistent
Four ultrasonic sensors are installed in the rear spoiler.

A Park Assistent sensor together with holder consists of the following components:

[1] - Rosette
[2] - Washer
[3] - Sensor housing
[4] - Isolating ring
[5] - Sensor
[6] - Retaining spring