A2105400372 Mercedes W210 R170 K40 Fuse Relay Module – OEM Used & Tested

Descrizione

This Mercedes K40 fuse relay module is a genuine OEM electronic component for Mercedes W210 and R170 vehicles. Primary OEM number A2105400372. It is designed to distribute battery power to the electrical circuits of the car and to switch electrical loads through its fuses and relays, so that lighting, comfort and control functions receive protected power. It is built for the original wiring of these vehicles and is installed in the factory position in the fuse and relay area.

Its job is to protect the circuits with fuses, to switch consumers through relays and to keep the supply of the connected control units stable. A properly working fuse relay module supports reliable power distribution, correct switching of the connected functions and correct operation of the electrical system of the car, including lighting, wipers, fans and other comfort functions.

Common signs of a faulty unit include fuses that blow repeatedly, relays that click but do not switch, burnt or corroded contacts, intermittent faults in lights or comfort functions and a car that loses power to some circuits. When the module fails, several electrical functions may stop working at random, the battery may drain and the vehicle may become unreliable. Corroded or burnt contacts are the most common cause of such faults in older vehicles.

This is a used original part, removed from a vehicle and tested before sale. Match the exact OEM number A2105400372 before ordering. Professional installation is recommended, and adaptation to the vehicle may be required where applicable.