Parking assistance

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Fig 1: Identifying Parking Assistance

Courtesy of VOLVO CARS OF NORTH AMERICA.

There is a back-up (reversing) warning system to assist reversing maneuvers. The back-up (reversing) warning system consists of:

four sensors in the rear bumper
a parking assistance module (PAM) under the rear relay box.

The parking assistance module (PAM) communicates with the rear electronic module (REM) using serial communication. The signals transmitted contain information about status and diagnostics. The sensors are directly connected to the Parking Assistance Module (PAM). The sensors are also powered via the parking assistance module (PAM).

The back-up (reversing) warning system is activated via a switch on the lower section of the climate control module (CCM). When the system is active, an LED lights in the switch and a text message is displayed in the infotainment control module (ICM) or audio module (AUM).

The sensors detect objects within 1.5 meters and if reverse gear is engaged then a beeping tone can be heard from the rear loudspeakers and the front loudspeakers respectively. The tone intensifies when the car draws closer to the object. At approx. 30 cm the tone becomes continuous.

In the event of a fault in the parking assistance module (PAM) or sensors, the general warning lamp in the driver information module (DIM) lights and a text message is displayed.

There are diagnostics for the back-up (reversing) warning system.