P0572 Mercedes-Benz Code - Cruise Control/Brake Switch 'A' Circuit Low
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
- P0572 Mercedes-Benz indicates Cruise Control/Brake Switch 'A' Circuit Low.
- 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 P0572 Mercedes-Benz Description
What are the Possible Causes of the DTC P0572 Mercedes-Benz?
- Faulty Brake Switch
- Misadjusted brake switch
- Brake Switch harness is open or shorted
- Brake Switch circuit poor electrical connection
How to Fix the DTC P0572 Mercedes-Benz?
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 P0572 Mercedes-Benz 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 P0572 Mercedes-Benz Code
1. What does the OBDII code P0572 mean on a Mercedes-Benz?
P0572 indicates that the Cruise Control/Brake Switch 'A' Circuit is experiencing a low voltage condition, which can affect the functionality of the cruise control and brake systems.
2. What are the common symptoms of code P0572 in a Mercedes-Benz?
Symptoms include non-functional cruise control, illuminated check engine light, brake lights not working properly, and reduced vehicle performance in some cases.
3. What causes code P0572 in a Mercedes-Benz?
Common causes include a faulty brake light switch, damaged or corroded wiring, a blown fuse, or a malfunctioning cruise control system.
4. Can I still drive my Mercedes-Benz with a P0572 code?
While the car may still be drivable, it is not recommended to ignore this issue, as it can lead to safety problems like non-functional brake lights or cruise control.
5. How is code P0572 diagnosed in a Mercedes-Benz?
A mechanic will use an OBDII scanner to confirm the code, inspect the brake light switch and wiring, check for blown fuses, and test the voltage in the circuit.
6. How do I fix the P0572 code on my Mercedes-Benz?
Repairs may include replacing the faulty brake light switch, repairing damaged wiring, replacing blown fuses, or addressing cruise control system issues.
7. How much does it cost to fix a P0572 code on a Mercedes-Benz?
The cost varies but typically ranges from $50 to $200, depending on whether the issue is a simple brake light switch replacement or more extensive electrical repairs.
8. Can a faulty brake light switch alone trigger P0572 in a Mercedes-Benz?
Yes, a defective brake light switch is one of the most common causes of this code.
9. Will clearing the P0572 code solve the problem permanently?
No, clearing the code will only temporarily remove it. The underlying issue must be repaired to prevent the code from returning.
10. Can P0572 affect other systems in my Mercedes-Benz?
Yes, it can impact the cruise control, brake lights, and potentially the vehicle's safety features that rely on the brake light switch.
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