8374806 BMW E38 E39 Door Window Mirror Module PMBT Low – OEM Used & Tested

Description

This BMW door window and mirror module is a genuine OEM electronic component for BMW E38 7 Series and E39 5 Series vehicles. Primary OEM number 8374806, marked PMBT Low. It is designed to drive the window motor, the mirror adjustment motors and the lock actuator of the door based on the door switch inputs and the central locking commands.

Its job is to convert each switch input into the matching movement of the window glass, the mirror or the lock, and to monitor the motors and the door status while doing so. A properly working window and mirror module supports even glass travel, precise mirror positioning and dependable locking, which keeps the convenience functions of the door working correctly in all weather.

Common signs of a faulty unit include a window that sticks, stops halfway or does not move, a mirror that does not adjust, folds by itself or stays still, a lock that ignores the central locking, switches that respond only sometimes, or several door functions failing at once. When the module fails, the door comfort electronics may stop completely, and fault codes may be stored in the body control memory.

This is a used original part, removed from a vehicle and tested before sale. Match the exact OEM number 8374806 before ordering, and check that the connector type, the version marking and the door side match your original unit. Professional installation is recommended, and a diagnostic scan and a check of window and mirror operation should be performed after fitting where applicable.