Enabling engine control - GF80.30-P-3004B

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 129, 140 as of 1.6.97

MODEL 170 as of 1.6.97 except CODE (491) US version except CODE (498) Japanese version

MODEL 170 as of 1.2.97 with CODE (491) US version

MODEL 170 as of 1.3.97 with CODE (498) Japanese version

System interlinkage

Fig 1: Enabling Engine Control Function

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

When the ignition is switched "ON" the transponder is supplied with power. The data block content is transmitted inductively by the transponder via the transponder coil (L11) to the radio frequency DAS control module (N54/3) (model 170) or the radio frequency/infrared DAS control module (N54/4) (models 129/140) where it is evaluated. If valid the engine control is released analog to drive authorization system 2a via the CAN data bus from the radio frequency DAS control module (N54/3) (model 170) or the radio frequency/infrared DAS control module (N54/4) (models 129/140) to the engine control module.

If the transponder is invalid or it is not possible to build up energy for the transponder, the engine control is not released. This is displayed with the message "START ERROR" in the instrument cluster.

The drive authorization system is independent of the status of the central locking system and the batteries in the remote control key.

Remote control key with transponder, purpose/design /function	Models 129, 140	GF80.30-P-4001B
DAS radio frequency/infrared control module, purpose/location	MODEL 129, 140	GF80.30-P-4012A
Remote control key, purpose/design /function	MODEL 170	GF80.57-P-4101B
DAS radio frequency control module, location/purpose	MODEL 170	GF80.57-P-4105A