A P0572 code on your 2020 Infiniti QX60 indicates a low voltage condition in the cruise control brake switch circuit, often interpreted as the switch being stuck in the 'on' (brake pressed) position.
Stuck-On Switch Interpretation
A low circuit reading suggests the brake switch signal shows brake applied continuously. This could mean the switch is stuck closed, shorted to ground, or misadjusted so it's always activated. The cruise system thinks you're constantly braking.
QX60 Cruise Control
The 2020 Infiniti QX60 features cruise control integrated with driver assistance systems. The brake switch input is essential—if the system constantly sees brake applied, cruise control can't engage or function properly.
Causes of Stuck-On Reading
The brake switch may be misadjusted, always pressed against the pedal linkage. The switch may be stuck in the closed position mechanically. A short to ground in the wiring creates constant low signal. Connector issues may create unintended ground paths.
Diagnostic Process
Use Nissan Consult to verify brake switch signal shows brake applied constantly. Release the brake pedal fully and check if signal changes. Inspect brake switch adjustment—there should be a small gap when pedal is released. Test for shorts to ground in the circuit wiring.