P0570 — Cruise Control Coast Signal Malfunction
Can drive — fix at your convenience.
What P0570 means
This code is set when the computer sees a problem with the 'coast' signal from the cruise control switch, the input that lets you gradually slow down while cruise is active. The usual culprits are a worn cruise control switch, damaged wiring or connectors near the steering wheel, or a fault in the control module. Repairs are generally simple and most often involve servicing the switch or its wiring.
Common symptoms
- Check engine light is on
- Coast function on cruise control doesn't work
- Cruise control won't slow the car when commanded
- Cruise control disengages unexpectedly
- Cruise control buttons respond intermittently
Common causes
- Worn or faulty cruise control coast switch
- Damaged wiring or connector in the steering wheel
- Failing clock spring under the steering wheel
- Faulty cruise control or body control module
- Short or open in the coast signal circuit
Typical repair cost
$90 – $350
Varies by vehicle and root cause.
Frequently asked questions
Can I keep driving with a P0570 code?
Yes. The code only affects cruise control, so your car is safe to drive normally. You just may not be able to use the coast or full cruise functions reliably until it's repaired.
How much does it cost to fix a P0570 code?
Expect roughly $90 to $350. Cleaning or replacing the switch is cheaper, while wiring repairs or replacing a control module costs more.
Is a P0570 code serious?
No, it's low severity. It doesn't threaten your engine, transmission, or safety, but it's worth fixing so your cruise control behaves properly.
What does the coast signal do in a P0570 code?
The coast signal lets you gently lower your set speed while cruise control is on. With this code, that input isn't reaching the computer correctly, so the coast feature stops working.