AP_w056
Tesla Electric Vehicle
Severity: MinorWhat Does This Error Mean?
Tesla AP_w056 reads 'Cruise control unavailable' — sometimes followed by 'Try again on next drive'.
The car has temporarily disabled Traffic-Aware Cruise Control and Autopilot for the rest of the current drive.
The most common triggers are a camera that briefly lost view (snow, dirt, sun glare), a speed limit reading that jumped sharply, or a one-off sensor disagreement that the car decided to flag for safety.
Park and restart and it usually resets.
Affected Models
- Tesla Model 3 (HW3 and HW4 cars)
- Tesla Model Y
- Tesla Model S
- Tesla Model X
Common Causes
- Front camera fogged, frosted, or covered by snow / dirt
- Sun glare directly into the camera array
- Map data disagreement with detected speed-limit sign
- Brief radar / sensor dropout (older HW2/HW3 cars)
- GPS lost signal in a tunnel or dense urban canyon
How to Fix It
-
Check the windshield in front of the camera.
The cameras live behind the rearview mirror.
Wipe the inside and outside of the windshield in that area.
If frost or condensation is the cause, run the defroster on full for 60 seconds and AP_w056 often clears within minutes once the camera sees through clearly. -
Check the bumper cameras.
On HW4 cars, the bumper has a side-facing and forward-facing camera.
Bug splatter or road grime over either disables AP.
Quick wipe with a damp cloth.
Don't use harsh chemicals — they can fog the lens. -
Restart the car at the next safe stop.
Park, hold both scroll wheels for 10 seconds until the screen goes black, wait, screen comes back on.
This is a soft reboot — does not reboot the drive computer, but resets the AP system.
Often clears AP_w056 immediately. -
If it persists, do a full power cycle.
Park, exit the car, lock it, walk away for 10-15 minutes (let the car go to sleep).
Come back and unlock.
This forces a full power cycle of the AP computer.
Solves about half the persistent AP_w056 cases that a screen reboot doesn't fix. -
Watch for repeats.
If AP_w056 returns on every drive, the sensor calibration may be off — usually after a windshield replacement or wheel alignment.
Tesla service can recalibrate.
Don't keep using AP if you don't trust it; the warning is the car telling you it doesn't trust its own sensors right now.
Frequently Asked Questions
Why does AP_w056 happen most often in winter?
Winter combines cold-fogged cameras, low-angle sun glare, road salt covering bumper sensors, and snow that disagrees with mapped lane lines.
All four can trigger AP_w056.
Cars in northern climates see this alert several times a winter as routine — it's the system working as designed.