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2020 S60 T5 Parking Assist System Service Required

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Laura J. · rep 0 · May 22, 5:15 AM · 1 replies · solved · Question

Vehicle: 2020 Volvo S60 T5 Momentum

I'm getting a "Parking Assist System Service Required" message on my 2020 Volvo S60 T5 Momentum. This started happening intermittently a few weeks ago, but now it's constant. The front and rear parking sensors don't work at all.

I've tried cleaning the sensors, thinking maybe dirt was the issue, but no luck. There's no visible damage to any of them. Could it be a faulty sensor, or something more complex like a control module?

It's annoying not having them, especially in tight parking spots. Has anyone else experienced this with their S60?

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 5:15 AM

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ClearTheCode admin answer:

The "Parking Assist System Service Required" message on your 2020 Volvo S60 T5 indicates a fault within the Park Assist Module (PAM) or one of its connected components. Since all sensors are affected, it points to a more central issue than a single dirty sensor.

  1. Check for Diagnostic Trouble Codes (DTCs): A professional OBD-II scanner (or Volvo's VIDA system) can read specific codes from the PAM. Common codes related to parking sensors include B11xx series codes (e.g., B1101 for a specific sensor fault, or B1100 for a general system fault) or U-codes indicating communication issues.
  2. Inspect Wiring and Connectors: Although less common, a damaged wiring harness or a loose/corroded connector to the PAM or a specific sensor could cause a system-wide failure. Visually inspect the wiring behind the bumpers where the sensors are located.
  3. Faulty Parking Assist Module (PAM): If no specific sensor codes are present, or if multiple sensors are reporting faults, the PAM itself might be failing. This module processes the signals from all the ultrasonic sensors.
  4. Software Glitch: Sometimes, a simple software glitch can cause these messages. A hard reset (disconnecting the battery for 15-30 minutes) might clear temporary errors, but this is a long shot.

When to see a shop: Given that all sensors are non-functional and a simple cleaning didn't help, it's highly recommended to take your S60 to a Volvo dealership or a reputable independent European car specialist. They have the necessary diagnostic equipment to read the specific fault codes from the PAM, which will accurately identify whether it's a faulty sensor, a wiring issue, or the PAM itself that needs replacement or reprogramming.

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