Tesla Model S 2021 — technical service bulletin
Bulletin SB2233001 · NHTSA communication 10210723 · issued Feb 1, 2022
Technical service bulletin
communication type
Power Train
component
2021
model years
2
vehicle entries
Official summary
Some Model S Palladium and Model X Palladium vehicles were built without a hydraulic control unit (HCU) wake-up line, and in rare circumstances, braking and stability control related alerts may appear on the instrument cluster and touchscreen during the vehicle power-on process. Such faults can typically be corrected and the affected functionality restored with a vehicle power cycle.
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.