RCU family
RCU_a053_ESPwheelSpeedsChecksum
Not Available
What does the RCU_a053_ESPwheelSpeedsChecksum alert mean?
Wheel speeds message checksum is incorrect.
What you'll see in your Tesla
- Not Available
What triggers it
The RCU receives the ESP_wheelSpeeds CAN message from the IDB with incorrect CRC 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 Cyclic Redundancy Check (CRC) for 100 milliseconds.
Potential impact
There may be an issue with the transmitting Electronic Control Unit (ECU), IDB.
Affected models
Model Y 2025+
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