BMW DTC U1125 – Message Monitoring Brake System Control Module Status Alive Check
DTC U1125 meaning on BMW
The DTC U1125 on a BMW refers to a message monitoring fault related to the Brake System Control Module’s status alive check. This diagnostic trouble code indicates that there is an issue with the communication or signal between the control module and other components within the brake system.
BMW DTC U1125 symptoms
Symptoms of the BMW DTC U1125 may include:
- ABS warning light illuminated on the dashboard
- Brake system malfunction message displayed
- Loss of ABS functionality
- Decreased braking performance
BMW DTC U1125 causes
Common causes of the BMW DTC U1125 include:
- Faulty Brake System Control Module
- Wiring or connection issues
- Interference from other electronic components
BMW DTC U1125 seriousness
The DTC U1125 on a BMW is a serious issue as it directly affects the proper functioning of the brake system, particularly the ABS. Ignoring this fault can compromise the vehicle’s safety and handling, so it should be addressed promptly.
How to diagnose DTC U1125 on BMW
To diagnose the DTC U1125 on a BMW, a mechanic would typically:
- Use a diagnostic scanner to retrieve the fault codes
- Inspect the wiring and connections related to the Brake System Control Module
- Perform a system check to identify any other potential issues
How to fix DTC U1125 on BMW
Fixing the DTC U1125 on a BMW may involve:
- Replacing the faulty Brake System Control Module
- Repairing any damaged wiring or connections
- Clearing the fault codes and performing a system reset
How to erase DTC U1125 on BMW
To erase the DTC U1125 on a BMW, the fault codes can be cleared using a diagnostic scanner. After addressing the underlying issue causing the fault code, the system can be reset to remove the error code and ensure proper functionality of the brake system.
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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