The P0575 code on your 2022 Toyota Highlander indicates a general malfunction in the cruise control input circuit. This code suggests the ECM is not receiving proper signals from one or more cruise control switches.
Cruise Control Input Circuit
The cruise control input circuit encompasses all switch inputs—set, resume, coast, accelerate, cancel, and main on/off. P0575 indicates a general problem without specifying which function is affected, suggesting a common circuit issue.
Highlander Cruise System
The 2022 Toyota Highlander features dynamic radar cruise control on many trims. The system uses steering wheel-mounted controls connected through the clock spring. All inputs must function for proper cruise operation.
General Input Malfunction Causes
Clock spring damage can affect all steering wheel switches simultaneously. A common ground or power supply issue affects multiple circuits. The cruise control master switch may have failed. Wiring harness damage near the steering column affects multiple circuits. Module communication errors prevent input recognition.
Diagnostic Process
Use Toyota Techstream to monitor all cruise control inputs. Test each switch function individually. If multiple switches show problems, suspect common circuitry. Check the clock spring connections. Verify the cruise control main switch enables the system. Test power and ground to the switch assembly.