Yaris Radar Sensor Failure

Sounds like a sensor malfunction is possible. Has it been exposed to unusually dirty or dusty conditions recently? Adaptive cruise and collision avoidance are often tied to that radar sensor, but it could be a deeper problem.

Thanks. I haven't knowingly exposed it to anything out of the ordinary. Could cleaning the sensor be a first step, or should I get a diagnostic calibration?

Cleaning is worth a try, but given the system errors, I'd suggest getting a professional opinion. These systems are complex and affect vehicle safety; a workshop visit might be necessary.

Thanks for the help. Cleaning the sensor at the workshop fixed it, costing 45€!