RADC-A044
RADC_a044_steeringWheelAngleErr
Also written as RADC_A044 / RADC A044 / RADC_a044_steeringWheelAngleErr / radc_a044_steeringwheelangleerr
Why does the exact Tesla alert ID matter?
Record the exact alert ID, including underscores, suffixes, and companion alerts. Tesla alerts that look similar can point to different modules, timestamps, and service procedures.
What does RADC-A044 mean?
Tesla alert code in the Radar Controller (RADC) module. A condition prevents successful CANRX (CAN message received) for the steering wheel angle message, relating to a checksum, a counter, or an out-of-bounds signal value. The steering wheel angle message sent from the driver assistance system (DAS) Electronic Control Unit (ECU) to the radar controller (RADC) ECU is not as expected / as required for the radar to be enabled. ECU Internal fault - Hardware Watchdog ECU Internal fault - ADC Conversion Timeout ECU Internal fault - Mode Control Entry Error Vehicle Dynamics Error - the vehicle dynamics signals are out of spec, MIA or SNA ECU Internal ADC Overvoltage - Indicates an over voltage condition for the following voltage rails 1V25, 3V3, 4V5, 5V. Set when the voltages for the respective rails are above threshold. Cleared when over voltages return to nominal. Sensor function will be impaired, radar functions will be unavailable ECU Internal fault - ECU Module Configuration Error Received Country Does Not Match Learned Parameter When the learned parameters meet the ones being sent to the radar on CAN.
Original Description
A condition prevents successful CANRX (CAN message received) for the steering wheel angle message, relating to a checksum, a counter, or an out-of-bounds signal value. The steering wheel angle message sent from the driver assistance system (DAS) Electronic Control Unit (ECU) to the radar controller (RADC) ECU is not as expected / as required for the radar to be enabled. ECU Internal fault - Hardware Watchdog ECU Internal fault - ADC Conversion Timeout ECU Internal fault - Mode Control Entry Error Vehicle Dynamics Error - the vehicle dynamics signals are out of spec, MIA or SNA ECU Internal ADC Overvoltage - Indicates an over voltage condition for the following voltage rails 1V25, 3V3, 4V5, 5V. Set when the voltages for the respective rails are above threshold. Cleared when over voltages return to nominal. Sensor function will be impaired, radar functions will be unavailable ECU Internal fault - ECU Module Configuration Error Received Country Does Not Match Learned Parameter When the learned parameters meet the ones being sent to the radar on CAN.
Affected Tesla Models
What You May Notice
- Radar Controller alert: A condition prevents successful CANRX (CAN message received) for the steering wheel angle message, relating to a checksu
- Camera or radar sensing notification on the touchscreen
- Autopilot or active safety feature greyed out
How to Diagnose and Resolve
- 1 Check cameras and sensors for obstructions
- 2 Reboot the vehicle
- 3 Update software via Controls > Software
- 4 Schedule service if issue persists
Severity Notes
RADC-A044 is an Alert in the Radar Controller system. Confirm the vehicle screen and Tesla app show no driving or charging restrictions, and schedule service if the alert returns.