Symbol And Ambiance Illumination, Function - GF82.20-P-2100GWM

Model 463 (except 463.342) 

as of model year 2019 

Courtesy of MERCEDES-BENZ USA

Search and symbol illumination 

Courtesy of MERCEDES-BENZ USA

Ambiance illumination 

Function requirements, general 

• No overvoltage or undervoltage

Symbol and ambiance illumination in general 

The symbol and ambiance illumination feature provides the brightness-adjustable illumination of all controls as well as the illumination of the vehicle interior. Symbol and ambiance illumination encompasses the following subfunctions:

• Function sequence for search and symbol illumination 
• Function sequence for ambiance illumination 

Function sequence for search and symbol illumination 

Activating the switch and controls and symbol illumination makes it easier for the vehicle occupants to find important controls and to look for objects in the vehicle without having to switch on the ignition or the exterior lights to do so.

The search and symbol illumination is switched on by unlocking the vehicle remotely, by opening a vehicle door or by changing the status of circuit 15. The luminosity to be used to implement the search and symbol illumination can be continuously adjusted using the instrument illumination brightness control on the exterior lights switch. The front SAM control unit reads in the signals from the instrument illumination brightness control directly and sends them via interior CAN, electronic ignition lock control unit and user interface CAN to the instrument cluster.

After unlocking the vehicle or opening a vehicle door, the search and symbol illumination is switched on with 100 % luminosity.

The electronic ignition lock control unit sends the status of the central locking system and the status of circuit 15 over the user interface CAN to the instrument cluster.

The front door control units send the status of the front doors (open or closed) via interior CAN, electronic ignition lock control unit and user interface CAN to the instrument cluster.

The rear door control units send the status of the rear doors (open or closed) via interior CAN, electronic ignition lock control unit and user interface CAN to the instrument cluster.

The instrument cluster evaluates all incoming information, generates the circuit 58d signal and transmits it via the user interface CAN to the following control units to activate the search and symbol illumination:

• Electronic ignition switch control unit
• Head unit

The electronic ignition lock control unit actuates the following component:

• KEYLESS GO start/stop button

The head unit activates the integrated controls and sends the circuit 58d signal over the telematics CAN to the following control units, which then switch on the integrated controls:

• Audio/COMAND display
• Audio/COMAND control panel
• Touchpad

The Audio/COMAND control panel sends the circuit 58d signal over the lower control panel LIN to the following control panels, which then actuate the integrated controls:

• Upper control panel control unit
• Left lower control panel
• Right lower control panel

The electronic ignition lock control unit sends the circuit 58d signal via the chassis FlexRay to the steering column tube module control unit.

The steering column tube module control unit actuates the following components:

• Actuation over steering wheel CAN and steering wheel electronics:
  • Instrument cluster multifunction steering wheel button group
  • Head unit multifunction steering wheel button group
• Direct actuation:
  • DIRECT SELECT lever

The electronic ignition lock control unit sends the circuit 58d signal via interior CAN to the following control units:

• Front SAM control unit
• Climate control unit
• Left front door control unit
• Right front door control unit
• Left rear door control unit
• Right rear door control unit
• Overhead control panel control unit

The front SAM control unit actuates the following components:

• Direct actuation:
  • Exterior lights switch
  • Front cigarette lighter with ashtray illumination
  • Rear cigarette lighter with ashtray illumination
  • Center console armrest stowage compartment switch and controls illumination
  • Front center console cup holder illumination
  • Electric parking brake switch
• Actuation via the instrument panel LIN:
  • Analog clock
  • Driver-side instrument panel button group

The climate control unit actuates the search and symbol illumination of the following components via A/C operating LIN:

• Climate control operating unit
• Rear AC control unit

The left front door control unit actuates the following component parts over the left front door LIN:

• Driver-side power window and outside mirror adjustment switch group
• Left front seat adjustment switch group
• Left front seat climate control and central locking switch group

The right front door control unit actuates the following components:

• Actuation via right front door LIN:
  • Right front seat adjustment switch group
  • Right front seat climate control and central locking switch group
• Direct actuation:
  • Passenger-side power window switch

The left rear door control unit actuates the following components:

• Actuation via left rear door LIN:
  • Left rear seat heaters button
• Direct actuation:
  • Left rear power window switch

The right rear door control unit actuates the following components:

• Actuation via right rear door LIN:
  • Right rear seat heaters button
• Direct actuation:
  • Right rear power window switch

The overhead control panel control unit actuates the following components:

• Actuation via roof LIN:
  • Surround lamp in inside mirror
• Direct actuation:
  • Glasses case illumination (except code EU8 (Burmester 3D surround sound system))

Model 463 (except 463.342)

as of model year 2019

except code EU8 (Burmester® surround sound system)

The overhead control panel control unit directly actuates the eyeglasses box illumination irrespective of the circuit 58d signal from a circuit 15R ON status onwards.

Function sequence for ambiance illumination 

The ambient lighting is switched on by unlocking the vehicle remotely, by opening a vehicle door or by changing the status of circuit 15. In the process, different areas of the vehicle interior are illuminated indirectly.

The luminosity and the color in which the ambiance illumination is to be designed can be adjusted using a corresponding menu in the head unit. On vehicles with code FR2 (Ambient lighting display) different zones are also defined through this menu.

• The following zones can be selected:
• "Front" zone, driver and front passenger area
• "Displays" zone, illumination of instrument cluster and Audio/COMAND display
• "Rear" zone, rear area
• "Complete" zone, all areas

On vehicles with code FR2 (Ambient lighting display) the luminosity can be adjusted in several stages. 64 different colors can be selected.

Model 463 (except 463.342)

as of model year 2019

with code FR2 (ambient lighting)

with code J25 (Widescreen cockpit)

Certain color and brightness setting combinations (color values) can be stored assigned to the instrument cluster's display style (SPORT, CLASSIC, PROGRESSIVE). Thus an assigned ambient lighting color value can be activated by selecting a display style in the instrument cluster.

The head unit transmits the relevant information about these settings via the user interface CAN, the electronic ignition lock control unit and the interior CAN to the ambiance illumination control unit.

After a vehicle door is opened, the ambiance illumination is actuated with 100_% luminosity.

The electronic ignition lock control unit sends the status of the central locking and the status of circuit 15 via interior CAN to the ambiance illumination control unit.

The ambiance illumination is deactivated 3 s after the vehicle is locked.

The ambient lighting control unit evaluates all incoming information and then actuates the following component parts:

Over left front door ambient lighting LIN:

• Left front door handle ambiance illumination
• Left front door ambiance illumination

The left front door ambiance illumination LIN is looped via the left front door control unit.

Over right front door ambient lighting LIN:

• Right front door handle ambiance illumination
• Right front door ambiance illumination

The right front door ambiance illumination LIN is looped via the right front door control unit.

Over left rear door ambiance illumination LIN:

• Left rear door handle ambiance illumination
• Left rear door ambiance illumination

The left rear door ambient lighting LIN is looped via the left rear door control unit.

Over right rear door ambiance illumination LIN:

• Right rear door handle ambiance illumination
• Right rear door ambiance illumination

The right rear door ambient lighting LIN is looped via the right rear door control unit.

Over cockpit ambient lighting LIN:

• Left front footwell lamp
• Right front footwell lamp
• Driver-side inner ambient lighting
• Driver-side outside ambient lighting
• Passenger-side interior ambiance illumination
• Passenger-side exterior ambiance illumination
• Inner top digital instrument cluster full display ambient lighting (with code J25 (Instrument cluster - DIGITAL FULL DISPLAY))
• Outer top digital instrument cluster full display ambient lighting (with code J25 (Instrument cluster - DIGITAL FULL DISPLAY))
• Inner bottom digital instrument cluster full display ambient lighting (with code J25 (Instrument cluster - DIGITAL FULL DISPLAY))
• Outer bottom digital instrument cluster full display ambient lighting (with code J25 (Instrument cluster - DIGITAL FULL DISPLAY))

Over vehicle interior ambient lighting LIN:

• Left front center console ambiance illumination
• Right front center console ambiance illumination
• Left rear center console ambiance illumination
• Right rear center console ambiance illumination

Over the ambient lighting LIN in the rear passenger compartment footwell:

• Right rear footwell lamp
• Left rear footwell lamp

The door handles with ambient lighting are actuated after switching off circuit 15C for a further 2 minutes (run-on).

	Search and symbol illumination electrical function schematic		PE82.20-P-2054-97ZGC
	Electrical function schematic ambient lighting		PE82.20-P-2053-97ZGB
	Overview of interior illumination (IBL) system components		GF82.20-P-9997GW