Acceleration slip regulation, general - GF42.40-P-9611-01C

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.

Models 129, 140, 170, 202, 208, 210

ASR, ESP

The ASR and ESP hydraulic unit has been modified. It is now equipped with a lighter, more compact housing. This modification has no effect on the function or diagnosis of the system.

Fig 1: Identifying ASR Hydraulic Unit

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

BAS with ESP (engine 112)

The brake assist (BAS) control module has been eliminated. The entire function of the BAS module is included in the ESP control module.

ESP (engine 112)

On the ESP system the ESP pre-charging pump and ESP charging piston unit have been eliminated. The BAS solenoid valve in the brake servo-unit is actuated to provide the initial pressure for the high pressure/return pump.