Cruise Control Coast Signal Malfunction
The P0569 code indicates that the powertrain control module (PCM) has detected a malfunction in the cruise control coast signal circuit. This signal is used to disengage cruise control when the brake pedal is pressed or when the coast/decelerate function is activated. The issue typically stems from a faulty brake switch, cruise control switch, wiring problems, or a malfunctioning PCM.
01. Most Common Causes
- Faulty brake light switch
- Faulty cruise control coast switch
- Open or shorted wiring in the cruise control circuit
- Corroded or loose electrical connectors
- Failed PCM (rare)
02. Symptoms You Will Notice
- Cruise control inoperative or intermittent
- Cruise control does not disengage when brake is applied
- Brake lights may not illuminate
- Check Engine Light illuminated
03. Step-by-Step Diagnosis
Step 1: Use a scan tool to verify the code and check for related codes (e.g., P0571).
Step 2: Inspect the brake light switch for proper operation and adjustment.
Step 3: Test the cruise control coast switch for continuity and proper signal.
Step 4: Visually inspect wiring and connectors for damage, corrosion, or loose connections.
Step 5: If all else fails, test the PCM for proper signal input/output.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is generally safe to drive, but cruise control will be disabled. If the brake lights are also affected, it may pose a safety risk.
How much does it cost to fix?▼
Repair costs typically range from $50 to $150, depending on the cause. A brake switch replacement is common and inexpensive.