P0572 – BMW DTC

BMW DTC P0572 – Brake Switch ‘A’ Circuit Low

DTC P0572 meaning on BMW

The Diagnostic Trouble Code (DTC) P0572 for BMW refers to the ¨Brake Switch ‘A’ Circuit Low.¨ This code indicates that the signal from the brake light switch to the vehicle’s electronic control unit (ECU) is lower than the specified threshold. The brake light switch is a critical component that informs the ECU when the brake pedal is pressed, allowing the vehicle to activate brake lights and other safety systems.

BMW DTC P0572 symptoms

Symptoms associated with DTC P0572 on a BMW may include:

• Brake lights not functioning properly
• Inability to shift out of park
• Disabling of cruise control
• Check Engine Light (CEL) illuminated on the dashboard

BMW DTC P0572 causes

Common causes of DTC P0572 on a BMW include:

• Defective brake light switch
• Wiring issues or short circuits in the brake light circuit
• Corrosion or poor connections in the brake light switch circuit

BMW DTC P0572 seriousness

While DTC P0572 may not directly affect the drivability of the vehicle, it is crucial to address this issue promptly. Malfunctioning brake lights can compromise safety on the road, as other drivers may not be alerted when you are braking. Additionally, other systems that rely on the brake switch signal may be affected, potentially leading to further complications.

How to diagnose DTC P0572 on BMW

To diagnose DTC P0572 on a BMW, you can follow these steps:

1. Use a diagnostic scanner to retrieve the fault code and confirm P0572.
2. Inspect the brake light switch for proper operation and continuity.
3. Check the wiring and connectors for any signs of damage or corrosion.
4. Test the brake switch signal using a multimeter to ensure it meets specifications.

How to fix DTC P0572 on BMW

To fix DTC P0572 on a BMW, you can consider the following solutions:

1. Replace the faulty brake light switch with a new, OEM part.
2. Repair any damaged wiring or connectors in the brake light circuit.
3. Clean or replace corroded terminals to ensure proper connections.
4. Clear the fault code and perform a test drive to verify the repair.

How to erase DTC P0572 on BMW

To erase DTC P0572 on a BMW, you can use a diagnostic scanner to clear the fault code from the ECU’s memory. After addressing the underlying issue causing the fault code, clearing the code will reset the system and turn off the Check Engine Light. Ensure that the repair has been successful before erasing the DTC.

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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