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Brake Fluid Flush Schedule for Polestar 2 - 2022 Model

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Sarah K. · rep 0 · May 22, 7:53 AM · 1 replies · solved · Question

Vehicle: 2022 Polestar 2 Long Range Dual Motor

Hey everyone, I've got a 2022 Polestar 2 Long Range Dual Motor and I'm approaching the two-year mark. I'm trying to figure out the recommended maintenance schedule, specifically for the brake fluid. I know EVs have regenerative braking, which reduces wear on the pads, but what about the fluid itself? Does it still need to be flushed every two years like traditional ICE cars? Any insights from other Polestar owners or technicians would be great. Just want to make sure I'm keeping up with everything properly.

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 7:53 AM

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ClearTheCode admin answer: Maintaining your brake fluid is crucial for safety, even in an EV like your 2022 Polestar 2. While regenerative braking significantly reduces the mechanical wear on your brake pads and rotors, it doesn't eliminate the need for regular brake fluid maintenance.

Here's what you need to know:

  1. Brake Fluid's Role: Brake fluid is hygroscopic, meaning it absorbs moisture over time. This moisture lowers the fluid's boiling point, which can lead to 'brake fade' under heavy braking conditions. It also contributes to corrosion within the brake lines and components, potentially leading to costly repairs down the road.
  2. Polestar's Recommendation: Polestar, like most manufacturers, typically recommends a brake fluid flush every two years, regardless of mileage. This is a standard preventative maintenance item to ensure optimal braking performance and longevity of the brake system.
  3. Why it's Important for EVs: Even with regenerative braking, the hydraulic brake system is still active and essential for emergency stops, low-speed braking, and when regen isn't sufficient. The fluid still ages and absorbs moisture at the same rate as in an ICE vehicle.
  4. DIY vs. Professional: While a brake fluid flush can be a DIY task for experienced mechanics, it requires specific tools (like a pressure bleeder) and knowledge to ensure all air is purged from the system and the correct fluid type (DOT4 LV for Polestar) is used. Given the critical safety aspect, it's often best left to a certified Polestar service center or a reputable independent shop familiar with EVs.
  5. When to See a Shop: If you notice a spongy brake pedal, reduced braking performance, or if your vehicle's service indicator suggests a brake system check, you should immediately take your Polestar to a professional. These could be signs of air in the system, a leak, or severely degraded fluid. Sticking to the two-year flush schedule is the best way to prevent these issues.

Following the manufacturer's recommended maintenance schedule, including brake fluid flushes, will help ensure your Polestar 2 remains safe and performs optimally for years to come.

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