TESLA Warning

APS-W020

APS_w020_ECU_checkstopError

Also written as APS_W020 / APS W020 / APS_w020_ECU_checkstopError / aps_w020_ecu_checkstoperror

System
APS
Autopilot System
Type
Warning
Category
ADAS
Severity
Warning

Why does the exact Tesla alert ID matter?

Record the exact alert ID, including underscores, suffixes, and companion alerts. Tesla alerts that look similar can point to different modules, timestamps, and service procedures.

What does APS-W020 mean?

Tesla warning code in the Autopilot System (APS) module. APS receives an CPU exception Clears on reset / sleep cycle

Original Description

APS receives an CPU exception Clears on reset / sleep cycle

Affected Tesla Models

Model SModel XModel 3Model Y

What You May Notice

  • Autopilot System alert: APS receives an CPU exception Clears on reset / sleep cycle
  • Camera or sensor obstruction notification on the touchscreen
  • Autopilot features greyed out in the drive settings menu

How to Diagnose and Resolve

  1. 1 Check all cameras and sensors for dirt, ice, or obstructions — clean if needed
  2. 2 Reboot the vehicle
  3. 3 Check for OTA updates (Autopilot improvements are frequently delivered OTA)
  4. 4 Schedule service if Autopilot remains unavailable after cleaning and rebooting

Severity Notes

APS-W020 is a Warning in the Autopilot System system. Schedule service soon. Monitor your vehicle for additional warnings.

Other APS Codes

APS_w002 APS_w003 APS_w004 APS_w005 APS_w006 APS_w007 APS_w008 APS_w009
View all APS codes →