Overhead Control Panel Control Unit, Component Description - GF82.20-P-5216RF

Model 205, 253 

Model 205 as of 01.06.2018 (except model 205.4), model 253 (except model 253.99) as of 01.06.2019, model 253.99, shown on model 205.0 as of 01.06.2018 with code 413 (panoramic sliding sunroof) or code 414 (sliding roof) and code 351 (emergency call system (HERMES)) 

Model 205 up to 31.05.2018 (except model 205.4), model 253 (except model 253.99) up to 31.05.2019, shown with code 413 (panoramic sliding sunroof) or code 414 (sliding roof) and code 348 (emergency call/assistant system) 

Courtesy of MERCEDES-BENZ USA

Overhead control panel control unit for model 205.4, shown up to 31.05.2018 

Courtesy of MERCEDES-BENZ USA

Emergency call system button group (S93/3) on model 205.4 as of 01.06.2018 with code 351 (Emergency call system (HERMES)) 

Courtesy of MERCEDES-BENZ USA

Emergency call system button group on model 205.4 up to 31.05.2018 with code 351 (Emergency call system (HERMES)) 

Courtesy of MERCEDES-BENZ USA

Location 

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

The emergency call system button group (model 205.4 with code 351 (Emergency call system (HERMES))) is located between the overhead control panel control unit and the inside rear-view mirror (A67) at the front at the headliner.

Tasks 

The overhead control panel control unit has the following tasks:

• Reading in of signals 
• Evaluation of input factors 
• Actuation of components 
• Transmitting and receiving ultrasound waves (model 205 as of 01.06.2018, model 253 (except model 253.99) as of 01.06.2019, model 253.99, with code 882 (interior protection and tow-away protection) or code 852 (sensor system for anti-theft alarm system (ATA))) 
• Detecting changes in the vehicle inclination (model 205 as of 01.06.2018, model 253 (except model 253.99) as of 01.06.2019, model 253.99, with code 882 (interior protection and tow-away protection) or code 852 (sensor system for anti-theft alarm system (ATA))) 

Model 205.0/1/2/3

up to model year 2019

with code 882 (Interior protection and tow-away protection)

Model 253 (except 253.99)

up to model year 2020

with code 882 (Interior protection and tow-away protection)

The overhead control panel control unit has the purpose of accommodating the ATA [EDW]/tow-away protection/interior protection control unit (N26/6).

Model 253 (except 253.99)

as of model year 2020

with code 77B (Contactless gesture control at front)

The overhead control panel control unit is used to mount the hand motion sensor (B84/15).

The emergency call system button group (model 205.4 with code 351 (Emergency call system (HERMES))) receives signals for the switch and controls and symbol illumination and for actuating the LEDs integrated in the buttons. The emergency call system button group sends the control signals from the buttons on the overhead control panel control unit.

Reading in of signals 

The overhead control panel control unit reads in the input factors through the following connections:

• Direct line 
• Roof LIN (LIN B13) (model 205 up to 31.05.2018, model 253 (except for model 253.99) up to 31.05.2019) 
• Alarm system LIN (LIN B14) (with code 882 (Interior protection and tow-away protection)) 
• Interior CAN (CAN B) (model 205 as of 01.06.2018, model 253 (except model 253.99) as of 01.06.2019, model 253.99) 

Direct line 

The overhead control panel control unit reads in the signals of the following components via direct lines:

• Interior temperature sensor with integrated fan (N70b1)
• Roof system switch (with CODE 413 (Panoramic sliding sunroof) or CODE 414 (Sliding roof))
• Interior lamp automatic function button
• Front dome lamp button
• Rear dome lamp button (model 205.0/1/2/3, 253)
• Left front reading lamp button
• Right front reading lamp button
• SOS button (model 205.0/1/2/3, 253 with code 347 (Mercedes-Benz emergency call system), code 348 (Emergency call/assistance system), code 350 (eCall Europe emergency call system) or code 351 (Emergency call system (HERMES)))
• Breakdown assistance button (model 205.0/1/2/3 up to 31.05.2018, 253 (except model 253.99) up to 31.05.2019, with code 347 (Mercedes-Benz emergency call system), code 348 (emergency call/assistant system), code 350 (emergency call system Ecall Europa) or code 351 (emergency call system (HERMES)))
• MB-Info button (model 205.0/1/2/3 up to 31.05.2018, 253 (except model 253.99) up to 31.05.2019, with code 347 (Mercedes-Benz emergency call system), code 348 (emergency call/assistant system), code 350 (emergency call system Ecall Europa) or code 351 (emergency call system (HERMES)))
• Mercedes me connect button (model 205.0/1/2/3 as of 01.06.2018, model 253 (except model 253.99) as of 01.06.2019, model 253.99, with code 351 (emergency call system (HERMES)))
• Left rear reading lamp button (E11/1s2) in the left rear dome lamp (E11/1) (model 205.0/1/2, 253 with code 876 (Interior lights package))
• Right rear reading lamp button (E11/2s2) in the right rear dome lamp (E11/2) (model 205.0/1/2, 253 with code 876 (Interior lights package))
• Left rear vanity mirror illumination switch (E15/10s1) in left rear vanity mirror unit (E15/10) (model 205.1 with code U05 (Make-up mirror in rear))
• Right rear vanity mirror illumination switch (E15/11s1) in right rear vanity mirror unit (E15/11) (model 205.1 with code U05 (Make-up mirror in rear))
• Emergency call system button group (model 205.4 with code 351 (Emergency call system (HERMES))):
  • MB-Info button (up to 31.05.2018)
  • SOS button
  • Breakdown assistance button (up to 31.05.2018)
  • Mercedes me connect button (as of 01.06.2018)
• Left rear glass breakage sensor (B39) (model 205.2 as of 01.06.2018, model 253 (except model 253.99) as of 01.06.2019, model 253.99, with code 882 (Interior protection and tow-away protection))
• Right rear glass breakage sensor (B39/1) (model 205.2 as of 01.06.2018, model 253 (except model 253.99) as of 01.06.2019, model 253.99, with code 882 (Interior protection and tow-away protection))
• Rear window glass breakage sensor (B39/4) (model 205.2 as of 01.06.2018, model 253 (except model 253.99) as of 01.06.2019, model 253.99, with code 882 (Interior protection and tow-away protection))

Roof LIN (model 205 up to 31.05.2018, model 253 (except for model 253.99) up to 31.05.2019) 

The overhead control panel control unit reads in the signals from the front SAM control unit (N10/6) via roof LIN.

Alarm system LIN (with code 882 (Interior protection and tow-away protection)) 

The overhead control panel control unit reads in the signals from the alarm siren (H3/1) via the alarm system LIN.

Interior CAN (model 205 as of 01.06.2018, model 253 (except model 253.99) as of 01.06.2019, model 253.99) 

The signals are read in by the overhead control panel control unit via the interior CAN.

Evaluation of input factors 

The input factors are evaluated by the microprocessor of the overhead control panel control unit and the corresponding components are actuated.

Actuation of components 

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

• Direct line 
• Roof-LIN (with code 876 (Interior Light Package)) 
• Alarm system LIN (with code 882 (Interior protection and tow-away protection)) 
• Interior CAN (model 205 as of 01.06.2018, model 253 (except model 253.99) as of 01.06.2019, model 253.99) 

Direct line 

The following components are actuated via direct lines:

• Front dome lamp (model 205.0/1/2/3, 253)
• Left overhead control panel light-emitting diode (model 205.0/1/2/3 up to 31.05.2018, model 253 (except model 253.99) up to 31.05.2019, model 205.4)
• Right overhead control panel light-emitting diode (model 205.0/1/2/3 up to 31.05.2018, model 253 (except model 253.99) up to 31.05.2019, model 205.4)
• Glasses case illuminationN70e8 (with code 876 (Interior Light Package) except model 253 with code 77B (Contactless gesture control at front))
• Left reading lamp (A67e1) (model 205 up to 31.05.2018, model 253 (except model 253.99) up to 31.05.2019 and model 205 as of 01.06.2018, model 253 (except model 253.99) as of 01.06.2019, except code 876 (interior light package))
• Right reading lamp (A67e2) (model 205 up to 31.05.2018, model 253 (except model 253.99) up to 31.05.2019 and model 205 as of 01.06.2018, model 253 (except model 253.99) as of 01.06.2019, except code 876 (interior light package))
• Ambient lamp (A67e3) (model 205 up to 31.05.2018, model 253 (except model 253.99) up to 31.05.2019 and model 205 as of 01.06.2018, model 253 (except model 253.99) as of 01.06.2019, except code 876 (interior light package))
• 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)
• Rear dome lamp (E15/3) (model 205.3 with code 876 (Interior lights package))
  • Rear interior lamp (E15/3e3)
  • Rear dome lamp ambiance illumination (E15/3e5) (with code 876 (Interior lights package))
• Left rear dome lamp (model 205.0/1/2, 253)
  • Left rear interior lamp (E11/1e2)
  • Left rear reading lamp (E11/1e1) (with code 876 (Interior lights package))
• Right rear passenger compartment dome lamp (model 205.0/1/2 with code 876 (Interior Light Package) or model 253)
  • Right rear reading lamp (E11/2e1) (with code 876 (Interior lights package))
  • Right rear passenger compartment interior lamp (E11/2e2) (model 205.0/1/2 with code 876 (Interior Light Package) or model 253)
• Left rear vanity mirror unit (model 205.1 with code U05 (Make-up mirror in rear))
  • Left rear vanity mirror illumination (E15/10e1)
  • Left rear vanity mirror dome lamp (E15/10e2)
• Right rear vanity mirror unit (model 205.1 with code U05 (Make-up mirror in rear))
  • Right rear vanity mirror illumination (E15/11e1)
  • Right rear vanity mirror dome lamp (E15/11e2)
• SOS button (model 205.0/1/2/3, 253 with code 347 (Mercedes-Benz emergency call system), code 348 (Emergency call/assistance system), code 350 (eCall Europe emergency call system) or code 351 (Emergency call system (HERMES)))
• Breakdown assistance button (model 205.0/1/2/3 up to 31.05.2018, 253 (except model 253.99) up to 31.05.2019, with code 347 (Mercedes-Benz emergency call system), code 348 (emergency call/assistant system), code 350 (emergency call system Ecall Europa) or code 351 (emergency call system (HERMES)))
• MB-Info button (model 205.0/1/2/3 up to 31.05.2018, 253 (except model 253.99) up to 31.05.2019, with code 347 (Mercedes-Benz emergency call system), code 348 (emergency call/assistant system), code 350 (emergency call system Ecall Europa) or code 351 (emergency call system (HERMES)))
• Mercedes me connect button (model 205.0/1/2/3 as of 01.06.2018, model 253 (except model 253.99) as of 01.06.2019, model 253.99, with code 351 (emergency call system (HERMES)))
• Emergency call system button group (model 205.4 with code 351 (Emergency call system (HERMES))):
  • MB-Info button (up to 31.05.2018)
  • SOS button
  • Breakdown assistance button (up to 31.05.2018)
  • Mercedes me connect button (as of 01.06.2018)

Roof-LIN (with code 876 (Interior Light Package)) 

The overhead control panel control unit actuates the following components over the roof-LIN:

• Left reading lamp
• Right reading lamp
• Ambient lamp

Alarm system LIN (with code 882 (Interior protection and tow-away protection)) 

The overhead control panel control unit actuates the alarm siren via the alarm system LIN.

Interior CAN (model 205 as of 01.06.2018, model 253 (except model 253.99) as of 01.06.2019, model 253.99) 

The signals are sent by the overhead control panel control unit via the interior CAN.

Transmitting and receiving ultrasound waves (model 205 as of 01.06.2018, model 253 (except model 253.99) as of 01.06.2019, model 253.99, with code 882 (interior protection and tow-away protection) or code 852 (sensor system for anti-theft alarm system (ATA))) 

The overhead control panel control unit monitors the vehicle interior for movements by sending and receiving ultrasonic waves. The overhead control panel control unit includes the following components for this purpose:

• Interior protection receiver (N70a1)
• Left interior protection transmitter (N70a2)
• Right interior protection transmitter (N70a3)

Detecting changes in the vehicle inclination (model 205 as of 01.06.2018, model 253 (except model 253.99) as of 01.06.2019, model 253.99, with code 882 (interior protection and tow-away protection) or code 852 (sensor system for anti-theft alarm system (ATA))) 

If the inclination sensor integrated in the overhead control panel control unit senses an alarm-relevant inclination change, an alarm is output.

	Wiring diagram for overhead control panel (OCP) control unit	Model 253.99	PE54.21-P-2107-97FCA
		Model 253 (except 253.99) as of model year 2020	PE54.21-P-2107-97FCB
		Model 205 (except 205.4) as of model year 2019	PE54.21-P-2107-97FBC
		Model 205.4 as of model year 2019	PE54.21-P-2107-97FBD
		Model 205 (except 205.4) up to model year 2019Model 253 (except 253.99) up to model year 2020	PE54.21-P-2107-97FBA
		Model 205.4 up to model year 2019	PE54.21-P-2107-97FBB