BMW DTC P0571 – Brake Switch ‘A’ Circuit
DTC P0571 meaning on BMW
The Diagnostic Trouble Code (DTC) P0571 for BMW refers to an issue with the Brake Switch ‘A’ Circuit. This code indicates that there is a malfunction in the electrical circuit associated with the brake light switch.
BMW DTC P0571 symptoms
Symptoms of DTC P0571 on a BMW may include:
- Brake lights not working
- Cruise control not engaging
- Difficulty shifting out of park
- Check Engine Light illuminated
BMW DTC P0571 causes
Common causes of DTC P0571 on a BMW include:
- Defective brake light switch
- Faulty wiring or connectors in the brake light circuit
- Brake light switch misalignment
BMW DTC P0571 seriousness
While DTC P0571 may not directly affect the drivability of the vehicle, it is important to address this issue promptly as it can compromise safety by affecting brake light operation and other related systems.
How to diagnose DTC P0571 on BMW
To diagnose DTC P0571 on a BMW, you can perform the following steps:
- Use a diagnostic scanner to retrieve the fault code
- Inspect the brake light switch for proper operation
- Check the wiring and connectors for any damage or corrosion
- Test the brake light circuit for continuity
How to fix DTC P0571 on BMW
To fix DTC P0571 on a BMW, you can try the following solutions:
- Replace the faulty brake light switch
- Repair or replace any damaged wiring or connectors
- Adjust the brake light switch alignment if necessary
How to erase DTC P0571 on BMW
To erase DTC P0571 on a BMW, you can clear the fault code using a diagnostic scanner or by disconnecting the vehicle’s battery for a few minutes. However, it is recommended to address the root cause of the issue before clearing the code to prevent it from reoccurring.
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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