Polestar 2 Brake Fluid Change Interval - Is it different for EVs?

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Maintaining your brake fluid is crucial for any vehicle, including your 2022 Polestar 2, despite its advanced regenerative braking system. While regenerative braking significantly reduces wear on physical brake pads and rotors, the hydraulic brake system and its fluid still play a vital role in emergency stops and when regen isn't sufficient.

1. Recommended Interval: Polestar, like most manufacturers, typically recommends a brake fluid change every two years or 20,000 miles, whichever comes first. This interval is generally consistent across both ICE and EV platforms because the primary reason for changing brake fluid is its hygroscopic nature.
2. Why it's Important: Brake fluid absorbs moisture over time, which lowers its boiling point. When brake fluid boils, it creates vapor bubbles in the lines, leading to a spongy pedal feel and significantly reduced braking performance, a dangerous condition known as 'brake fade.' Moisture can also lead to corrosion within the brake lines and components.
3. Checking Fluid: While you can visually inspect the fluid level in the reservoir (located under the hood), checking its moisture content requires a special tool. The fluid should be clear or light amber; dark or cloudy fluid often indicates contamination or degradation.
4. When to See a Shop: It's highly recommended to have your brake fluid changed by a qualified technician or a Polestar service center. They have the correct equipment to properly flush the old fluid and bleed the system, ensuring no air enters the lines. This is especially important for modern vehicles with ABS and stability control systems, which can be complex to bleed correctly. Always refer to your Polestar owner's manual for the most precise maintenance schedule and specifications for your specific model year and trim.