Pneumatic system equipment, function - GF80.30-P-4004-01B

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.

DAS X

Function

Model 129

To unlock, the pneumatic system equipment (PSE) is actuated by the IR DAS control module.

Models 140/202

To unlock, the pneumatic system equipment (PSE) is actuated by the IR DAS control module via a ground signal.

Model 210

To unlock the multi-function control module is actuated by the IR DAS control module. The multi-function control module then sends the signal to the PSE control module via the CAN bus.

The pump motor starts running and supplies pressure. The CL actuators are pressurized. When a pressure of 450 mbar is reached in the system the pump is switched off by the pressure switch. The pressure in the system is then released by the PSE and the unlocking operation is completed.

The locking procedure is accomplished analog to the unlocking operation. However the next time the remote control button is pressed the PSE is also actuated by connecting it through to ground by the second control lead on the IR DAS control module. The direction of rotation for the pump motor is reversed thereby providing the vacuum required to lock.