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Pilot Assist Malfunction and Parking Sensor Errors on 2023 Polestar 2

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Mike T. · rep 0 · May 25, 5:23 AM · 1 replies · solved · Question

Vehicle: 2023 Polestar 2 Dual Motor

Lately, my 2023 Polestar 2 Dual Motor has been throwing up warnings for "Pilot Assist Malfunction" and "Parking Assist System Unavailable." Sometimes the front parking sensors just don't detect anything, or they give false alarms when there's nothing there. It's intermittent, but concerning, especially for safety features like Pilot Assist.

I've checked for visible damage to the sensors and the front grille, but everything looks fine. It seems to happen more often in certain weather conditions, but not always. Any ideas what might be causing this, or is it a common software glitch?

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 25, 5:23 AM

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ClearTheCode admin answer:

Intermittent malfunctions with advanced driver-assistance systems (ADAS) like Pilot Assist and parking sensors can be frustrating and concerning. These systems rely on a complex network of sensors, cameras, and control modules, so several factors can cause issues.

Common Causes:

  • Obstruction/Dirt: Even a thin layer of dirt, mud, ice, or heavy rain/snow can block radar (behind the emblem) or ultrasonic sensors (in the bumpers), leading to false readings or system unavailability.
  • Misalignment: A minor bump, curb strike, or even strong vibrations could subtly misalign a sensor or camera, requiring recalibration.
  • Wiring Issues: Loose, corroded, or damaged wiring to the sensor modules can disrupt communication.
  • Software Glitch: A temporary bug in the ADAS control module's software can cause intermittent errors.
  • Faulty Sensor/Module: The sensor itself or its associated control module might be failing.

Troubleshooting Steps:

  1. Clean Sensors Thoroughly: Use a soft cloth and mild cleaner to wipe down all visible parking sensors (front and rear bumpers) and the radar unit located behind the Polestar emblem on the front grille. Ensure no ice, snow, or mud is present.
  2. Perform a Soft Reset: A quick infotainment system reset (holding the home button for ~20 seconds) can sometimes clear temporary electronic glitches affecting sensor communication and ADAS modules.
  3. Check for Visible Damage: Carefully inspect the bumper areas around the sensors and the windshield area around the camera for any signs of impact, cracks, or damage.
  4. Check for Software Updates: Ensure your vehicle's software is up-to-date (Settings > System > Software updates), as ADAS system improvements and bug fixes are common in OTA updates.
  5. Consider an OBD-II Scan: While ADAS systems often use proprietary codes, a generic scan might reveal codes like U0424 (Invalid Data Received From Navigation Unit) or B1000 (Electronic Control Unit Fault) which could indirectly point to a module issue. Specific ADAS codes (e.g., C0034 - Front Radar Sensor) would require a professional scanner.

When to See a Shop: If cleaning doesn't resolve the issue, or if the warnings are persistent, frequent, and affect critical safety features like Pilot Assist, it's imperative to visit a Polestar service center. They have specialized diagnostic tools to accurately read ADAS-specific fault codes, calibrate sensors and cameras, check wiring harnesses, and diagnose the ADAS control modules. Ignoring these warnings can compromise safety features and potentially lead to dangerous situations.

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