MyTeslaMate
RCU family

RCU_a047_ESPwheelSpeedsDLC

Not Available

What does the RCU_a047_ESPwheelSpeedsDLC alert mean?

Wheel speeds message was not received or message length is incorrect.

What you'll see in your Tesla

  • Not Available

What triggers it

The RCU did not receive the ESP_wheelSpeeds CAN message from the IDB for longer than 100 milliseconds, or ESP_wheelSpeeds is received with incorrect data length for longer than 100 milliseconds.

When it clears

The Redundant Control Unit (RCU) receives the ESP_wheelSpeeds Controller Area Network (CAN) message from the Integrated Dynamic Brake (IDB) with correct data length for 100 milliseconds.

Potential impact

There may be an issue with the transmitting Electronic Control Unit (ECU).

Affected models

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.