P0578 Code: Cruise Control Multi-Function Input A Circuit Stuck
🟢 Low severity · drivable
The car drives normally; only the cruise control buttons may not respond.
What P0578 means
The multi-function cruise control switch on the steering wheel sends several signals through one circuit. The computer says this circuit is stuck, meaning the signal stayed the same when it should have changed as buttons were pressed.
Symptoms
- Check engine light is on
- Cruise control buttons don't respond
- Cruise control works intermittently or not at all
- One cruise function sticks while others work
Common causes
- most common: Faulty multi-function switch
- common: Stuck or worn buttons inside the switch
- common: Damaged clock spring
- less common: Wiring or connector issue
How to fix it
| Fix | DIY? | Typical cost |
|---|---|---|
| Clean and test the cruise buttons and switch | Yes | $0–20 |
| Replace the multi-function switch | Yes | $50–200 |
| Replace the clock spring | Mechanic | $100–300 |
Frequently asked questions
Can I drive with a P0578 code?
Yes. Only the cruise control buttons may stop responding.
What does circuit stuck mean?
The signal from the multi-function switch stayed in one position when the computer expected it to change as you pressed buttons.
How much does it cost to fix a P0578?
A multi-function switch is $50–200; a clock spring is about $100–300 installed.
Related codes
P0579
P0579 Code: Cruise Control Multi-Function Input A Circuit Range/Performance
P0580P0580 Code: Cruise Control Multi-Function Input A Circuit Low
P0575P0575 Code: Cruise Control Input Circuit
Updated 2026-08. This page is informational and not a substitute for professional diagnosis.