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Polestar 1 Brake Fluid Change - What Type and Interval?

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Mike T. · rep 0 · May 25, 5:24 AM · 1 replies · solved · Question

Vehicle: 2020 Polestar 1

I have a 2020 Polestar 1 and I'm thinking about the brake fluid. I've heard that brake fluid should be changed periodically, but I'm not sure what the recommendation is for a high-performance hybrid like the Polestar 1. It's got about 30,000 miles on it now.

What type of brake fluid does it use, and what's the recommended service interval for changing it? Is this something I can tackle in my garage, or should I take it to a specialist given the hybrid system?

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 25, 5:24 AM

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ClearTheCode admin answer:

Brake fluid maintenance is essential for the safety and performance of your 2020 Polestar 1, especially given its advanced braking system and high-performance nature. Brake fluid is hygroscopic, meaning it absorbs moisture over time, which lowers its boiling point and can lead to corrosion within the braking system.

  1. Brake Fluid Type: Your Polestar 1 typically requires DOT 4 LV (Low Viscosity) brake fluid. The 'LV' is crucial for modern ABS, ESC, and regenerative braking systems, ensuring proper function in cold temperatures and quick response from electronic control units. Always verify with your owner's manual or a Polestar service center for the exact specification.
  2. Service Interval: The general recommendation for brake fluid replacement on most modern vehicles, including the Polestar 1, is every 2 years, regardless of mileage. This interval addresses the moisture absorption rate of the fluid.
  3. DIY Considerations: While changing brake fluid can be a DIY task on some vehicles, it's significantly more complex and risky on a Polestar 1 due to its sophisticated braking system, which integrates with the hybrid powertrain and electronic stability control (ESC).
    • Bleeding Procedure: Modern braking systems, especially those with ABS/ESC modules, often require specific bleeding procedures, sometimes involving a diagnostic tool to cycle the ABS pump to ensure all old fluid is expelled.
    • Contamination Risk: Introducing air or contaminants into the system can severely compromise braking performance.
    • Hybrid System Integration: The braking system works in conjunction with the regenerative braking, adding another layer of complexity.

When to See a Shop: We highly recommend having your brake fluid changed by a qualified Polestar service technician or a specialist familiar with European performance vehicles. They have the correct equipment, including pressure bleeders and diagnostic tools, to perform the service safely and effectively. If you notice a spongy pedal, reduced braking performance, or a brake warning light (e.g., OBD code P0571 - Brake Switch 'A' Circuit), seek professional help immediately.

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