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 

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

With code 348 (Emergency call/assist system) or code 362 (HERMES LTE), shown on model 292 with code 348 (Emergency call/assist system) 

With code 350 (Ecall Europe emergency call system) or code 360 (HERMES UMTS), shown on model 292 with code 350 (Ecall Europe emergency call system) 

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:

• Roof LIN (LIN B13) 
• Direct line 

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.

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 348 (Emergency call/assist system), code 350 (eCall Europe emergency call system), code 351 (Emergency call system (HERMES) or code 882 (Interior monitoring), the overhead control panel control unit reads in the signals of the anti-theft alarm system/emergency call system button group via direct lines.

The anti-theft alarm system/emergency call system button group can contain the following buttons:

• Towing sensor button
• Emergency call system button
• Interior protection switch
• Breakdown assistance button
• MB-Info button

Evaluation of input factors 

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

Actuation of components 

The actuation of the components takes place via the following connections:

• Roof LIN 
• Direct line 

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.

Direct line 

The following components are actuated via a direct line:

• 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)
• 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 (with code 348 (Emergency call/assist system), code 350 (eCall Europe emergency call system), code 351 (Emergency call system (HERMES)) or code 882 (Interior monitoring):
  • Towing sensor button
  • Emergency call system button
  • Interior protection switch
  • Breakdown assistance button
  • MB-Info button
• Rear dome lamp (E15/3) (with code 876 (Interior lights package)):
  • 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)

Wiring diagram for overhead control panel (OCP) control unit

PE54.21-P-2107-97NBA