BMW DTC P1579 – Multifunction Steering Wheel (MFL) Signal Plausibility
DTC P1579 meaning on BMW
The DTC P1579 on BMW vehicles indicates a Multifunction Steering Wheel (MFL) Signal Plausibility fault. This fault code is triggered when the signals received from the multifunction steering wheel buttons are deemed implausible or out of range by the vehicle’s control module.
BMW DTC P1579 symptoms
Symptoms of the DTC P1579 on a BMW may include malfunctioning or unresponsive steering wheel controls, such as the audio volume, cruise control, or phone buttons. The steering wheel buttons may not function as intended, or they may produce unexpected results.
BMW DTC P1579 causes
The DTC P1579 on a BMW can be caused by various factors, including a faulty multifunction steering wheel module, damaged wiring or connectors in the steering wheel circuit, or a communication error between the steering wheel module and the vehicle’s control unit.
BMW DTC P1579 seriousness
While the DTC P1579 may not directly affect the drivability of the vehicle, it can lead to inconvenience and reduced functionality of the steering wheel controls. It is recommended to address this issue promptly to ensure the proper operation of the multifunction steering wheel features.
How to diagnose DTC P1579 on BMW
To diagnose the DTC P1579 on a BMW, a diagnostic scan tool capable of reading fault codes and live data is required. The technician will need to inspect the multifunction steering wheel module, check the wiring and connectors for any damage, and perform a communication test between the module and the control unit.
How to fix DTC P1579 on BMW
Fixing the DTC P1579 on a BMW may involve replacing the faulty multifunction steering wheel module, repairing any damaged wiring or connectors, or reprogramming the control unit to establish proper communication with the steering wheel module. It is recommended to follow the manufacturer’s diagnostic and repair procedures for a comprehensive fix.
How to erase DTC P1579 on BMW
To erase the DTC P1579 on a BMW, a diagnostic scan tool capable of clearing fault codes is required. Once the underlying issue has been addressed and fixed, the technician can use the scan tool to erase the fault code from the vehicle’s memory. This will reset the system and allow for a fresh start without the DTC P1579 present.
Recommended tools & DTC Scanners for BMW
Best Diagnostic App for modern BMWs: BimmerLink
Recommended Bluetooth adapter for Bimmerlink: OBDLink CX
Cable adapter for Bimmerlink: Enet Cable USB Type C
For older BMWs we recommend: Autel AutoLink AL319 (2024 version)
Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter
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