Brake system, Checking the fluid level - wh4210pkw0000x(4210)

WARNING: This page does not describe the selected car, but rather 42 other vehicles, including the 1999 Mercedes-Benz S600, 1999 Mercedes-Benz S500, 1999 Mercedes-Benz S420, 1999 Mercedes-Benz S320, and 1999 Mercedes-Benz CL600. However, it is still accessible from the selected car via links, so may be relevant.

Model 107 from 8/85; 123; 124, 129, 140 up to 6/93; 126 from 9/85; 201 from 1/85

Fig 1: Identifying Brake Fluid Supply Reservoir

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Fig 2: Locating Hole On Reservoir Cap

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Fluid level	check.
Causes for extremely low brake fluid level may be:	The brake fluid level should be between the "max." and "min." marks on the brake fluid supply reservoir (10).
Brake pads or discs worn Inner or outer leakage in brake system
If fluid level is too low	eliminate cause.
Cap	check. Ensure that hole is not clogged (arrow) on caps with vent hole (up to approx. 09/90).