6974021 BMW E81 E87 PDC-Steuergerät (Einparkhilfe) – Original gebraucht & geprüft

Beschreibung

OEM part number 6974021. This is a genuine used BMW PDC control module (parking sensor ECU) for the E81 and E87 1 Series. Each unit is removed from a running vehicle, tested, and supplied in good used condition.

As the central controller of the parking distance warning system, this module provides power to and exchanges data with every ultrasonic sensor installed in the bumper. It measures the round-trip travel time of ultrasound pulses reflected from nearby objects to continuously compute obstacle proximity. The calculated distance is translated into a stepped audible warning — tones growing more rapid as clearance decreases — and, on models with a graphical display, the module drives the proximity visualisation shown in the instrument cluster or iDrive interface. System communication runs across the vehicle CAN bus.

Common symptoms of a faulty PDC module include the parking sensor system failing to activate when reverse is selected, no audible tones during close-range manoeuvring, a continuous warning beep with no obstruction present, a PDC warning indicator or amber symbol displayed in the instrument cluster, or one or more sensors appearing dead while the remaining sensors operate normally.

Supplied in good used condition. It is essential to cross-reference the OEM part number against your specific vehicle build and any dealer option codes before ordering, as PDC modules vary by specification and are often VIN-coded. A professional technician should carry out the fitting. Coding using BMW ISTA diagnostic software is necessary after installation on most applications; the system will not operate correctly or may log fault codes if coding is omitted. 14-day returns are accepted on unmodified, uninstalled parts.