Mercedes-Benz E-Class: Brake fluid level - Checking and adding other service 
products - Engine compartment - Maintenance and care - Mercedes-Benz E-Class Owners ManualMercedes-Benz E-Class: Brake fluid level

If you notice that the brake fluid level in the brake fluid reservoir has fallen to the MIN mark or less, check the brake system immediately for leaks. Also check the thickness of the brake linings. Contact a qualified specialist workshop, e.g. an authorized Mercedes-Benz Center immediately.

Do not add brake fluid. This does not correct the error.

Only check the brake fluid level when the vehicle is stationary and on a level surface.

The brake fluid level is correct if it is between

The brake fluid level is correct if it is between MIN marking 2 and MAX marking 1 on the brake fluid reservoir.

    Windshield washer system and headlamp cleaning system
    The washer fluid reservoir is used for both the windshield washer system and the headlamp cleaning system. Vehicle components and their service products must match. You should, therefore, onl ...

    See also:

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    Reporting Safety Defects to the Canadian Government
    If you live in Canada, and you believe that the vehicle has a safety defect, notify Transport Canada immediately, and notify General Motors of Canada Limited. Call Transport Canada at 1-80 ...