Parking assistance system (optional extra)
The parking assistance system warns the drivers of close objects when reversing.
The driver is warned by a sound signal from the loudspeakers for the audio module (AUM) (16/1).
The rear sensors (7/131, 7/132, 7/133 and 7/134) are active when the ignition is on in position II and back-up gear (R) is selected. The sensors are deactivated automatically when the gear selector lever is moved from R to any other position. The sensors detect objects at a distance of 1.5 meters. A beeping sound is heard from one of the rear loudspeakers. If the vehicle is left-hand drive, the sound comes from the rear right-hand loudspeaker (16/5). If the vehicle is right-hand drive, the sound comes from the rear left-hand loudspeaker (16/6). The sound signal becomes more frequent as the distance to the object reduces. The sound is constant at distances below approximately 30 cm.
The front sensors (7/204, 7/205, 7/206 and 7/207) (option) are active when the ignition is on in position II and gear R is selected, or when the ignition is on in position II and the car is driven forwards at speeds below 10 km/h. The sensors are automatically deactivated when the car is driven forwards at above 15 km/h. On cars with automatic transmissions, the sensors are deactivated if P is selected, irrespective of speed. The sensors detect objects at a distance of 0.8 meters. A beeping sound is heard from one of the front loudspeaker on the driver's side (16/4). The sound signal becomes more frequent as the distance to the object reduces. The sound is constant at distances below approximately 30 cm.
A signal is transmitted from the parking assistance module (PAM) (4/86) to the rear electronic module (REM) (4/58). This indicates whether the buzzer should be switched on or off.
The rear electronic module (REM) then transmits a signal to the audio module (AUM) on the controller area network (CAN).
If a trailer or caravan is connected, the parking assistance system must be deactivated. This is done using the switch on the climate control module (CCM) (3/112).
The climate control module (CCM) then transmits a signal to the rear electronic module (REM) via the controller area network (CAN). The parking assistance system is deactivated.