Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Parking assistance
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.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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