To top up the brake fluid or eliminate the cause of a leak, contact a BMW workshop where the grades of brake fluids are known (DOT 4), suitable for your vehicle.
Caution: Brake fluid is hygroscopic, i.e. over time, it absorbs moisture from the air.
To ensure the operational reliability of the brake system, it is essential to have the brake fluid replaced by a BMW workshop every two years.
Brake fluid is poisonous and will corrode the paintwork of your vehicle. Therefore, it should be stored only in closed original packaging and out of the reach of children.
When changing the brake fluid, follow the rules for the disposal of toxic substances.
Warning: Do not spill brake fluid. Pour it into the filling tank only up to the mark "max". Brake fluid may ignite if it comes into contact with hot engine parts. Risk of burns!