MyTeslaMate
ESP family

ESP_a054_ReLWSSShortTo12V

ABS (anti-lock braking system) disabled

What does the ESP_a054_ReLWSSShortTo12V alert mean?

Short circuit of the WSS_RL sensor line to 12V.

What you'll see in your Tesla

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

What triggers it

Short circuit of the wheel speed sensor line to + voltage.

When it clears

Check WSS connection for short circuit and repair/replace harness or sensor

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.