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What is the BMW FRM module?

1 Answers

StAliyah

07/29/25 5:47pm

Footwell Module. Below is relevant information about the BMW FRM: 1. Introduction to FRM: The Footwell Module, abbreviated as FRM, consists of a circuit board with an integrated CPU. Its primary functions include controlling the vehicle's windows, headlights, and communication systems, making it a crucial component of the vehicle's control system. 2. Causes of damage: Non-professionals can easily damage this module, typically resulting in data loss from the CPU on the circuit board, leading to control failures in lighting, windows, etc. Common causes of FRM data loss include: not turning off the ignition switch when replacing the battery, grounding the battery terminals, and other unprofessional battery operations. 3. Repair scenarios: Based on routine repair cases from Beijing Anchang Changda, the Footwell Module controls a wide range of functions, including lighting, door locks, central locking, and window regulators. Diagnosing FRM damage is relatively straightforward. Apart from module replacement at 4S dealerships (which is expensive, typically costing around 4,000-5,000 RMB), simpler repair methods are available. One such method involves disassembling and repairing the module by using programming equipment to reconnect and rewrite the CPU data, with costs under 1,000 RMB. Repairing the module requires equipment such as circuit welding tools, module programming devices, and specialized BMW engineering equipment or other devices capable of connecting to the vehicle's computer for programming.

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