Brake fluid should be changed once a year regardless of mileage, preferably in the spring.
Be careful when handling brake fluid.
Suck out the brake fluid from the reservoir to a level of approximately 10 mm.
Attention: Do not empty the expansion tank completely, as air can get into the brake system.
Fill the reservoir with new brake fluid up to the MAX mark.
Put a clean hose on the bleeder valve of the right rear brake caliper, substitute a vessel.
Open the air release valve and «pump» about 10 times the brake pedal.
Close the bleed valve. Top up the expansion tank with new brake fluid.
In the same way, pump out the old brake fluid from the remaining brake calipers.
Caution: The fluid that flows out must be clean and free from bubbles.
Take old brake fluid to a local collection point for special waste.