0315457232 Mercedes W203 Vito Hella Trailer Tow Bar Module – OEM Used & Tested

Descrizione

This Hella trailer tow bar module is a genuine OEM electronic component for Mercedes-Benz W203 C-Class and Vito vehicles equipped with a tow bar. Primary OEM number 0315457232. It is designed to link the vehicle electrical system with the trailer socket and to switch and monitor the trailer lighting circuits. The unit is installed in the rear of the vehicle near the trailer socket wiring.

Its job is to power the trailer lights, including the turn signals, brake lights, tail lights and fog light, based on the signals from the vehicle, and to recognize when a trailer is connected. It also helps the vehicle adjust the lighting monitoring so that no false bulb failure warnings appear. A properly working tow bar module supports correct trailer lighting and safe operation of the towing equipment.

Common signs of a faulty unit include trailer lights that do not work or flicker, turn signals that stay on or blink too fast, a bulb failure warning in the instrument cluster while towing, the trailer not being detected, or blown fuses in the trailer circuit. When the module is damaged, the trailer lighting may fail completely, which is unsafe and can break road regulations. Water ingress or corroded connectors are frequent causes of such failures.

This is a used original part, removed from a vehicle and tested before sale. Match the exact OEM number 0315457232 before ordering. Professional installation is recommended, and a check of the trailer socket wiring and fuses, plus coding of the tow bar function, may be needed where applicable.