Mercedes Benz C-Class (W204) Training Manual: Signal Acquisition and Actuation Module (SAM)

Front SAM

The front SAM/SRB control unit (N10/1) is installed in the engine compartment in the driver-side control unit box.

The most important functions are:

• Control of the front exterior lights
• Master of the turn signal function
• Control of the cornering illumination
• Rain closing of the tilting/sliding roof
• Actuation of the central locking elements of the rear doors (discrete line)
• Crash emergency opening of the central locking via an integrated crash sensor (6g)
• Integrated central gateway (CGW [ZGW])

Gateway between the following CANs:

• Interior CAN
• Chassis CAN
• Diagnostic CAN
• Front end CAN

Gateway between the following LINs:

• Instrument panel LIN
• Wiper/inside rearview mirror LIN

Rear SAM

The rear SAM/SRB control unit (N10/2) is installed on the wheelhouse on the right side of the trunk.

The most important functions are:

• Control of the rear exterior lights
• Master of the ATA [EDW]
• Master of the central locking system
• Battery state recognition
• Control of the on-board electrical system management

Gateway between the following LINs:

• On-board electrical system LIN (IBS-LIN)
• Alarm sirens LIN