6921414 BMW E53 E46 E39 PDC Control Module (Parking Sensor ECU) – OEM Used & Tested

Descrizione

OEM part number 6921414. This is a genuine used BMW PDC control module (parking sensor ECU) for the E53 X5, E46 3 Series and E39 5 Series. Units are tested and ready to fit.

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.

Signs that this module has failed include the parking distance system producing no sound when reverse gear is engaged or front sensors are switched on, missing alert tones during close manoeuvring, an unsolicited continuous beep, a PDC warning or fault indicator lit in the cluster, or isolated sensor positions becoming unresponsive while the rest of the system continues to function.

This module is supplied in good used condition. Always verify the OEM part number against your exact vehicle and specification before ordering — PDC modules are VIN-specific on most applications. Professional installation is recommended. Coding to the vehicle VIN using BMW ISTA diagnostic software is required after fitting on the majority of applications; without coding the system may not activate or may log persistent fault codes. 14-day returns are accepted on unmodified parts.