Component description for overhead control panel control unit - GF82.20-P-5216GN

MODEL 166 as of model year 2016

MODEL 292

Shown on model 292

Fig 1: Identifying Overhead Control Panel Control Unit Components - Shown On Model 292

Courtesy of MERCEDES-BENZ USA

With CODE 882 (Interior monitoring), shown on model 292

Fig 2: Identifying Overhead Control Panel Control Unit Components - Shown On Model 292 With Code 882

Courtesy of MERCEDES-BENZ USA

With CODE 348 (Emergency call/assist system), shown on model 292

Fig 3: Identifying Overhead Control Panel Control Unit Components - Shown On Model 292 With Code 348

Courtesy of MERCEDES-BENZ USA

With CODE 350 (Ecall Europe emergency call system, Gen. 3), shown on model 292

Fig 4: Identifying Overhead Control Panel Control Unit Components - Shown On Model 292 With Code 350

Courtesy of MERCEDES-BENZ USA

Location

The overhead control panel control unit is located in the front section of the headliner.

Tasks

The overhead control panel control unit has the following tasks:

Reading in of signals
Evaluation of input factors
Actuation of components

Reading in of signals

The input factors are read in via the following connections:

Direct line
Roof LIN (LIN B13)

Direct line

The overhead control panel control unit reads in the signals of the following components over a direct line:

Interior temperature sensor with integrated fan (N70b1)
Sliding roof switch
Rear dome lamp switch
Interior lamp switch
Left front reading lamp switch
Right front reading lamp switch

With CODE 882 (Interior monitoring) or with CODE 348 (Emergency call/assist system):

Anti-theft alarm system/emergency call system button group
Towing sensor button
Emergency call system button
Interior protection switch
Breakdown assistance button
MB-Info button

Roof LIN

The overhead control panel control unit reads in the requests from the SAM control unit (N10) to switch on the interior lights via the roof LIN.

Evaluation of input factors

The input factors are evaluated by the microprocessor and the corresponding components are actuated.

Actuation of components

Components are actuated with the following connection:

Left sun visor mirror lamp (E14/1) via the left front mirror lamp switch (S101)
Right sun visor mirror lamp (E14/2) via the right front mirror lamp switch (S102)
Central load compartment dome lamp (E15/4)
Left dome lamp, 2nd seat row (E15/12)
Right dome lamp, 2nd seat row (E15/13)

Additionally, with CODE 882 (Interior monitoring) or with CODE 348 (Emergency call/assist system):

Direct line
Roof LIN

Direct line

The following components are actuated via a direct line:

Left reading lamp (A67e1)
Right reading lamp (A67e2)
Left front interior lamp (integrated)
Right front interior lamp (integrated)
Anti-theft alarm system/emergency call system button group
Towing sensor button
Emergency call system button
Interior protection switch
Breakdown assistance button
MB-Info button

Additionally, with CODE 876 (Interior lights package):

Rear dome lamp (E15/3)
Left rear reading lamp (E15/3e1) via the left rear reading lamp switch (E15/3s1)
Right rear reading lamp (E15/3e2) via the right rear reading lamp switch (E15/3s2)
Rear interior lamp (E15/3e3)

Roof LIN

The overhead control panel control unit sends status information of the switches mounted to the housing over the roof LIN to the SAM control unit, which - where applicable - forwards it to the evaluating control units.

Wiring diagram for overhead control panel (OCP) control unit

PE54.21-P-2107-97NBA