TAS2-A081
TAS2_a081_underVoltage5VHeight
Also written as TAS2_A081 / TAS2 A081 / TAS2_a081_underVoltage5VHeight / tas2_a081_undervoltage5vheight
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 TAS2-A081 mean?
Tesla alert code in the Thermal Architecture System v2 (TAS2) module. An external 5V supply on the Tesla Air Suspension (TAS) board is sensed to be too low. This rail supplies 5V to the level sensors, so a bad supply or measurement may lead to unexpected operation. The alert checks for 5V power supply faults every 100ms. If this is a persistent warning, there is likely an issue with the board.
Original Description
An external 5V supply on the Tesla Air Suspension (TAS) board is sensed to be too low. This rail supplies 5V to the level sensors, so a bad supply or measurement may lead to unexpected operation. The alert checks for 5V power supply faults every 100ms. If this is a persistent warning, there is likely an issue with the board.
Affected Tesla Models
What You May Notice
- Thermal Architecture System v2 alert: An external 5V supply on the Tesla Air Suspension (TAS) board is sensed to be too low. This rail supplies 5V to the leve
- Reduced charging speed in cold weather or battery pre-conditioning required
- HVAC performance may be slightly affected
How to Diagnose and Resolve
- 1 Reboot the vehicle
- 2 Check coolant levels if accessible (Model S/X only)
- 3 Avoid DC fast charging until battery temperature normalizes
- 4 Schedule service if the alert appears in warm ambient conditions
Severity Notes
TAS2-A081 is an Alert in the Thermal Architecture System v2 system. Confirm the vehicle screen and Tesla app show no driving or charging restrictions, and schedule service if the alert returns.