TAS2-A290
TAS2_a290_twistSustainedAtSpeed
Also written as TAS2_A290 / TAS2 A290 / TAS2_a290_twistSustainedAtSpeed / tas2_a290_twistsustainedatspeed
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-A290 mean?
Tesla alert code in the Thermal Architecture System v2 (TAS2) module. This alert checks for twistSustainedAtSpeed faults every 100ms. Twist indicates that two diagonal corners are higher than the other two and the chassis is reporting a twisted state - as if one wheel was parked on a large block. At speed, twist should not be observed because no road surface can hold the vehicle in a twisted state while in motion. Twist is calculated using the four corner heights: front right (FR), front left (FL), rear right (RR), and rear left (RL). Twist = | (FL+RR)-(FR+RL) | Set: When vehicle speed is greater 10mph AND twist is greater than 20mm for 10 seconds. Clear: When vehicle speed is less than 10mph OR twist is less than 20mm.
Original Description
This alert checks for twistSustainedAtSpeed faults every 100ms. Twist indicates that two diagonal corners are higher than the other two and the chassis is reporting a twisted state - as if one wheel was parked on a large block. At speed, twist should not be observed because no road surface can hold the vehicle in a twisted state while in motion. Twist is calculated using the four corner heights: front right (FR), front left (FL), rear right (RR), and rear left (RL). Twist = | (FL+RR)-(FR+RL) | Set: When vehicle speed is greater 10mph AND twist is greater than 20mm for 10 seconds. Clear: When vehicle speed is less than 10mph OR twist is less than 20mm.
Affected Tesla Models
What You May Notice
- Thermal Architecture System v2 alert: This alert checks for twistSustainedAtSpeed faults every 100ms. Twist indicates that two diagonal corners are higher tha
- 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-A290 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.