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2022 Polestar 2 "Service Required" Message & Reduced Power

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Amanda S. · rep 0 · May 22, 7:40 AM · 1 replies · solved · Question

Vehicle: 2022 Polestar 2 Long Range Dual Motor

Hey everyone, I'm hoping someone here has experienced this before. My 2022 Polestar 2 Long Range Dual Motor just threw a 'Service Required' message on the dashboard. Simultaneously, I noticed a significant reduction in power, almost like it's in a limp mode.

I tried restarting the car a couple of times, but the message persists, and the power reduction is still there. I don't have an OBD-II scanner that can read EV-specific codes, but I'm wondering if this is a common issue or if there's something simple I can check before taking it to the dealer.

It happened suddenly while driving on the highway. No strange noises or smells beforehand. Any ideas what might be causing this?

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 7:40 AM

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ClearTheCode admin answer:

"Service Required" with reduced power in a Polestar 2 often indicates an issue with the high-voltage battery system, inverter, or a critical sensor related to the powertrain. Common culprits include:

  1. 12V Battery Degradation: While it's an EV, the 12V battery powers critical control modules. A weak 12V battery can cause a cascade of seemingly unrelated errors, including "Service Required" and limp mode.
  2. High Voltage System Fault: Issues with the main traction battery, battery management system (BMS), or the inverter/motor control unit. This would definitely trigger a limp mode for safety.
  3. Sensor Malfunction: A faulty sensor (e.g., temperature, current, or voltage sensor) within the high-voltage system can send incorrect data, leading the car's computer to believe there's a critical fault.
  4. Software Glitch: Less common, but sometimes a software bug can cause erroneous warnings. A full system reset (often requiring dealer tools) might resolve it.

What to do:

  1. Check 12V Battery: If you have a multimeter, check the voltage of your 12V battery. It should be around 12.6V when off. If it's significantly lower, it might be the root cause.
  2. Attempt a Soft Reset: Sometimes, locking the car, walking away for 10-15 minutes, and then returning can allow some modules to reset. This is a long shot but worth trying.
  3. Scan for Codes: While standard OBD-II scanners might not read all proprietary EV codes, some advanced scanners or those specifically designed for European vehicles might pick up generic powertrain codes (P-codes) that could offer a clue. Look for codes related to the high voltage system (e.g., P0Axx, P0Bxx, P0Cxx).
  4. Document Everything: Note the exact message, when it occurred, and any other symptoms. This information is crucial for the technician.

When to see a shop: Given the "Service Required" message and reduced power, it is highly recommended to contact Polestar Roadside Assistance or schedule an immediate service appointment. Driving with a high-voltage system fault can be unsafe and potentially cause further damage. Do not ignore this warning, as it indicates a critical system malfunction. A Polestar service center has the specialized diagnostic tools and training to safely and accurately diagnose and repair high-voltage system issues.

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