P0571 BMW Code - Brake Light Switch Plausibility
Quick Answer
When the brake pedal is depressed, the stop light switch sends a signal to the Engine Control Module (ECM). Common causes include Faulty Brake Switch, Misadjusted brake switch, Brake Switch harness is open or shorted. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P0571 BMW indicates Brake Light Switch Plausibility .
- Common causes
- Common causes include Faulty Brake Switch, Misadjusted brake switch, Brake Switch harness is open or shorted.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P0571 BMW Description
What are the Possible Causes of the DTC P0571 BMW?
- Faulty Brake Switch
- Misadjusted brake switch
- Brake Switch harness is open or shorted
- Brake Switch circuit poor electrical connection
How to Fix the DTC P0571 BMW?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0571 BMW code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P0571 BMW Code
1. What does the OBDII code P0571 mean on a BMW?
P0571 indicates a "Brake Light Switch Plausibility" issue, meaning the brake light switch signal is not behaving as expected by the vehicle's control module.
2. What are the common symptoms of P0571 on a BMW?
Symptoms may include the brake lights not functioning properly, ABS or traction control warnings, cruise control malfunction, or the vehicle failing to start.
3. What causes the P0571 code on a BMW?
Causes include a faulty brake light switch, damaged wiring or connectors, incorrect brake pedal adjustment, or issues with the vehicle’s control module.
4. Can P0571 affect vehicle safety?
Yes, since the brake light may fail to illuminate properly, it can pose a safety risk by reducing visibility to other drivers.
5. How do I diagnose the P0571 code on my BMW?
Diagnose the problem by inspecting the brake light switch, checking the wiring and connectors for damage, and using a diagnostic tool to monitor brake switch signal inputs.
6. Can I drive my BMW with a P0571 code?
Driving with this code is not recommended as it may impair safety features like brake lights, ABS, and cruise control.
7. How do I fix the P0571 code on a BMW?
Fixes include replacing the brake light switch, repairing damaged wiring or connectors, adjusting the brake pedal, or recalibrating the control module if needed.
8. How much does it cost to repair the P0571 code on a BMW?
Costs vary depending on the repair, but replacing a brake light switch typically costs $50-$150, while wiring repairs may range from $100-$300.
9. Can a faulty brake light switch trigger other warning lights?
Yes, a malfunctioning brake light switch can trigger ABS, stability control, and cruise control warning lights.
10. Is the P0571 code likely to return after repairs?
If the underlying issue is properly resolved and the repairs are done correctly, the code should not return. Regular maintenance can help prevent recurrence.
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