APS-W171
APS_w171_TurboA_SMS_taskUtilErr
Also written as APS_W171 / APS W171 / APS_w171_TurboA_SMS_taskUtilErr / aps_w171_turboa_sms_taskutilerr
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-W171 mean?
Tesla warning code in the Autopilot System (APS) module. Warns if APS fails to receive one or more CAN msgs from VCRIGHT on Party Bus APS fails to receive one or more CAN msgs from VCRIGHT on Party Bus APS steering monitor detects fault Faults that lead to inhibit are cleared AP features like autostere and side collision assist will be disabled
Original Description
Warns if APS fails to receive one or more CAN msgs from VCRIGHT on Party Bus APS fails to receive one or more CAN msgs from VCRIGHT on Party Bus APS steering monitor detects fault Faults that lead to inhibit are cleared AP features like autostere and side collision assist will be disabled
Affected Tesla Models
What You May Notice
- Autopilot System alert: Warns if APS fails to receive one or more CAN msgs from VCRIGHT on Party Bus APS fails to receive one or more CAN msgs f
- Camera or sensor obstruction notification on the touchscreen
- Autopilot features greyed out in the drive settings menu
How to Diagnose and Resolve
- 1 Check all cameras and sensors for dirt, ice, or obstructions — clean if needed
- 2 Reboot the vehicle
- 3 Check for OTA updates (Autopilot improvements are frequently delivered OTA)
- 4 Schedule service if Autopilot remains unavailable after cleaning and rebooting
Severity Notes
APS-W171 is a Warning in the Autopilot System system. Schedule service soon. Monitor your vehicle for additional warnings.