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DTC codes / P05xx · Vehicle speed, idle control and auxiliary inputs / P0569

P0569Cruise Control Coast Signal

P0569 means the cruise control module has detected a fault in the coast signal circuit, which is the input that tells the system the driver wants to reduce speed without braking. The computer monitors the voltage or switch state on the coast switch circuit and sets this code when the signal is out of range, stuck, or inconsistent with other cruise control inputs.

SystemPowertrain
Code typeGeneric (all makes)
SeverityLow
Fix difficultyIntermediate
AreaVehicle speed, idle control and auxiliary inputs

Symptoms you may notice

  • Cruise control does not engage or drops out unexpectedly when you press the coast button
  • The coast function does not reduce speed as expected when the button is held
  • The cruise control indicator light may flash or stay off entirely
  • Other cruise control buttons (set, resume, accelerate) may also stop working
  • Often no symptoms besides the warning light, with cruise control otherwise operating normally

Common causes, most likely first

  1. Faulty coast switch inside the steering wheel cruise control button cluster
  2. Damaged or worn clock spring (spiral cable) in the steering column
  3. Open or shorted wiring in the coast signal circuit between the switch and the cruise control module
  4. Corroded or loose electrical connector at the cruise control switch or module
  5. Failed cruise control module or body control module (BCM) that processes the switch signal
  6. Poor ground connection for the cruise control switch circuit

How to diagnose and fix it

  1. Inspect the cruise control switch connector and wiring for corrosion, looseness, or damage
  2. Test the coast switch with a multimeter for continuity and correct resistance when pressed
  3. Check the clock spring for continuity and signs of wear, especially if other steering wheel buttons are affected
  4. Verify the ground circuit for the cruise control switch is clean and tight
  5. Measure voltage and resistance on the coast signal wire at the cruise control module to confirm the circuit integrity
  6. If the switch and wiring test good, substitute a known-good cruise control module to rule out internal failure
  7. Clear the code and test cruise control operation through several coast cycles to confirm the repair

Why the coast switch code often misleads

  • A failing clock spring can cause this code even when the coast switch itself tests perfectly on the bench, because the signal is lost through the rotating connection in the steering column.
  • Some vehicles set P0569 when the cruise control module loses its ground reference, which can happen from a loose body ground that also affects other systems like the horn or airbag.
  • The coast signal is often a multiplexed resistance value shared with other cruise buttons, so a single dirty contact can set this code without any button feeling faulty to the driver.
  • P0569 does not always mean the coast switch is bad; a shorted signal wire rubbing against the steering column metal can mimic a stuck coast command.
  • After replacing a switch or clock spring, some vehicles require a steering angle sensor calibration or cruise control relearn procedure before the code will stay cleared.

Can I keep driving with P0569?

The vehicle remains safe to drive because the fault only affects cruise control convenience, but avoid using cruise control until the repair is made to prevent unexpected speed changes. If the warning light is accompanied by other electrical symptoms like horn or airbag warnings, have the steering column inspected promptly.

Tools that help

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Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.

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