MyTeslaMate
ESP family

ESP_a035_FrLWSSDirectionFault

ABS (anti-lock braking system) disabled

What does the ESP_a035_FrLWSSDirectionFault alert mean?

Plausibility fault while monitoring of wheel direction.

What you'll see in your Tesla

  • ABS (anti-lock braking system) disabled
  • Drive with caution

What triggers it

At least one wheelspeed sensor is mounted in the wrong direction. This error will be set if case one: 1 rotation direction of the sensor signal is in one direction and the other 3 rotations are in the other direction OR case two: 1 rotation direction of the sensor signal has no rotation and 1 rotation in one direction and 2 rotations in other direction.

When it clears

Replace WSS and check proper mounting. All wheel speed sensors show the same rotation for 20 seconds.

Potential impact

Will disable VDC/TC and degrade ABS

Affected models

Cybertruck Model 3 2017-2023 Model 3 2024+ Model S 2021+ Model X 2021+ Model Y Model Y 2025+

Track your Tesla's alerts automatically

Alerts like this reach MyTeslaMate through your car's Tesla telemetry API. MyTeslaMate logs every alert your Tesla reports and turns it into readable history and real-time notifications — hosted TeslaMate with no server to run.