P0573 Mercury Code - Brake Switch 'A' Circuit High
Quick Answer
The P0573 diagnostic trouble code (DTC) for Mercury vehicles indicates a problem with the Brake Switch 'A' Circuit being too high. Common causes include Faulty brake switch, Damaged wiring or connectors in the brake switch circuit, ECM malfunction. 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
- P0573 Mercury indicates Brake Switch 'A' Circuit High.
- Common causes
- Common causes include Faulty brake switch, Damaged wiring or connectors in the brake switch circuit, ECM malfunction.
- 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.
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Code P0573 Mercury Description
The P0573 diagnostic trouble code (DTC) for Mercury vehicles indicates a problem with the Brake Switch 'A' Circuit being too high. The brake switch is a critical component of the vehicle's braking system, as it sends a signal to the vehicle's electronic control module (ECM) when the brake pedal is depressed. This signal is used to activate the brake lights and disengage cruise control, among other functions.
Common Causes of P0573 Mercury
- Faulty brake switch
- Damaged wiring or connectors in the brake switch circuit
- ECM malfunction
- Corrosion or debris in the brake switch mechanism
- Electrical issues such as a short circuit or open circuit in the brake switch circuit
Symptoms of P0573 Mercury
- Brake lights not working
- Inability to disengage cruise control
- Vehicle not starting
- Dashboard warning light illuminated
- Inconsistent or unpredictable behavior when applying the brakes
How to Fix P0573 Mercury
- Begin by locating the brake switch, typically located near the brake pedal under the dashboard.
- Inspect the wiring and connectors for any signs of damage, corrosion, or loose connections. Repair or replace as necessary.
- Test the brake switch using a multimeter to ensure it is functioning within the specified range. Replace the brake switch if it is faulty.
- Clear the DTC using an OBD-II scanner to reset the ECM and check for any recurring issues.
- Test the brake lights, cruise control, and overall braking system to ensure everything is functioning properly after the repair.
Cost to Fix P0573 Mercury
The cost of repairing a Brake Switch 'A' Circuit High issue can vary depending on the specific cause of the problem and the labor rates in your area. On average, you can expect to pay between $100 to $300 for parts and labor. Keep in mind that additional diagnostic time may be needed to pinpoint the exact cause of the issue, which can add to the overall cost. It is recommended to consult with a trusted mechanic or auto repair shop for a more accurate estimate based on your vehicle's make and model.
Tech Notes for P0573 Mercury
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