TESLA Alert
USM-A249
USM_a249_s10HwComErrDiagnostics
Also written as USM_A249 / USM A249 / USM_a249_s10HwComErrDiagnostics / usm_a249_s10hwcomerrdiagnostics
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 USM-A249 mean?
Tesla alert code in the Ultrasonic Sensor Module (USM) module. Alert indicating the cap loss VDDD sensor self-test has failed
Original Description
Alert indicating the cap loss VDDD sensor self-test has failed
Affected Tesla Models
Model SModel XModel 3Model Y
What You May Notice
- Ultrasonic Sensor Module alert: Alert indicating the cap loss VDDD sensor self-test has failed
- Autopark feature disabled
- Sensor obstruction or degraded icon on the touchscreen
How to Diagnose and Resolve
- 1 Check ultrasonic sensors (small circular sensors in bumpers) for dirt or ice
- 2 Clean sensors with a soft cloth and retry
- 3 Reboot the vehicle
- 4 Schedule service if sensors remain unavailable after cleaning
Severity Notes
USM-A249 is an Alert in the Ultrasonic Sensor Module system. Confirm the vehicle screen and Tesla app show no driving or charging restrictions, and schedule service if the alert returns.
Other USM Codes
USM_a001 USM_a002 USM_a003 USM_a005 USM_a006 USM_a012 USM_a013 USM_a015
View all USM codes →