2129003704 Mercedes W212 Parktronic PDC Control Module – OEM Used & Tested

Description

This Mercedes-Benz Parktronic PDC control module is a genuine OEM electronic component for the Mercedes W212 E-Class. Primary OEM number 2129003704. It is designed to manage the Park Distance Control system, powering the ultrasonic sensors in the front and rear bumpers and processing their echo signals to calculate the distance to nearby obstacles.

Its job is to send and receive the ultrasonic pulses, convert the measured distance into warning signals, and pass them to the buzzer and the display so the driver is alerted early and precisely. It also monitors every connected sensor for faults. A properly working Parktronic PDC module supports safe and accurate parking, protects the bumpers from damage, and ensures correct operation of the whole assistance system.

Common signs of a faulty unit include a Parktronic system that does not activate when reverse gear is engaged, constant or random beeping, false obstacle warnings, no signal from one or more sensors, a PDC fault message in the display, and fault codes stored in the system memory. When the module fails, the parking assistance may stop working completely or give unreliable distance warnings.

This is a used original part, removed from a vehicle and tested before sale. Match the exact OEM number 2129003704 before ordering. Professional installation is recommended, and coding or sensor adaptation with a diagnostic tool may be required where applicable, so confirm the fitment details for your vehicle before you buy, as parking systems differ between equipment versions.