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2022 QX50 ProPILOT Assist Malfunction - Sensors?

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Emily N. · rep 0 · May 22, 5:06 AM · 1 replies · solved · Question

Vehicle: 2022 Infiniti QX50 Sensory

I'm having an issue with my 2022 Infiniti QX50 Sensory where the ProPILOT Assist system keeps throwing a 'Malfunction' warning. It happens intermittently, sometimes right after starting the car, other times while driving on the highway. When the warning comes on, the adaptive cruise control and steering assist features become unavailable.

I've tried cleaning the radar sensor in the front grille and the camera on the windshield, but it hasn't made a difference. There are no visible obstructions or damage. Could this be a sensor issue, or maybe something with the module that controls these systems? It's really frustrating because I rely on these features for my commute.

Has anyone else experienced this with their newer QX50 or other Infiniti models with ProPILOT Assist?

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 5:06 AM

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ClearTheCode admin answer:

ProPILOT Assist malfunctions in newer Infiniti models like your 2022 QX50 can be caused by several factors, often related to the complex array of sensors and control modules involved. Here's what to consider:

  1. Sensor Calibration: Even minor impacts or windshield replacements can knock the front radar sensor (behind the grille) or the front camera (behind the rearview mirror) out of calibration. This requires specialized equipment to re-calibrate.
  2. Sensor Failure: While less common in newer vehicles, individual sensors (radar, camera, ultrasonic sensors) can fail. This would typically trigger specific diagnostic trouble codes (DTCs).
  3. Wiring/Connector Issues: Loose or corroded connections to any of the ProPILOT Assist sensors or the main control module can cause intermittent malfunctions. Rodent damage to wiring is also a possibility.
  4. Software Glitch: Sometimes, a temporary software glitch in the Advanced Driver-Assistance Systems (ADAS) control module can cause these warnings. A simple battery disconnect (for 15-20 minutes) can sometimes clear these, but it's not a guaranteed fix.
  5. Environmental Factors: While you've cleaned them, heavy rain, snow, ice, or even direct sunlight can temporarily impair sensor performance. However, if it's happening in clear conditions, it points to a deeper issue.

Relevant OBD-II Codes (Examples):

  • C1AXX series: Often related to radar sensor issues (e.g., C1A00 for radar sensor malfunction).
  • C1BXX series: Can be related to camera unit issues.
  • UXXXX series: Network communication codes if a module isn't communicating correctly.

When to See a Shop: Given the safety-critical nature of ProPILOT Assist, it's crucial to have this diagnosed by an Infiniti dealership. They have the necessary diagnostic tools (CONSULT-III Plus) to:

  • Read specific ADAS-related fault codes.
  • Perform sensor diagnostics and live data monitoring.
  • Check for and install any available software updates for the ADAS control module.
  • Perform necessary sensor calibrations.

Do not attempt to repair or modify these systems yourself, as it can compromise safety.

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