Driver-Side Front Door Control Unit, Component Description - GF72.29-D-6000H

MODEL 906.111/113/131/133/135/153/155/211/213/231/233/235/253/255/611/613/631/633/635/637/653/655/657/711/713/731/733/735 

Courtesy of MERCEDES-BENZ USA

Location 

The left front door control unit is located in the upper area of left door inside behind the door paneling.

Task 

The left front door control unit reads in the sensors, signals, operating switches and switches as well as button and switches voltage loads over semi-conductors outputs.

The left front door control unit is the "master control unit" for the mirror heater (SPH), with code (F68) left and right heated and electrically adjustable rearview mirror, connected to driver and passenger door and interior CAN (CAN B).

Generally the left front door control unit controls the following systems with the associated functions or supports the "master control units":

• Power window (PW), front
  • Actuation of driver door power window motor (M10/1)
  • Storing position of driver door power window motor on request (comfort closing) via integrated air recirculation button (S98s6) integrated into AAC control and operating unit (S98) (except code (ZU7) National version Canada and except code (ZU8) National version USA)
  • Actuation of driver door power window motor with request (comfort opening) via air recirculation button integrated into AAC control and operating unit to previously stored position (except code (ZU7) National version for Canada and except code (ZU8) National version for USA)
• Central locking (ZV)
  • Actuation of driver door central locking actuators (M14/6)
  • Power supply for driver door IR receiver (A261) with code (FZ8) Comfort opening/closing with IR remote control
• Interior illumination (IBL)
  • Actuation of switch and controls illumination
• Exterior lights (ABL)
  • Actuation of driver outside mirror turn signal lamp (M21/6e1)
• SPH, with code (F68) Heated+electrically adjustable left and right outside rearview mirrors
  • Actuation of mirror heater (M21/6r1) and mirror heater (M21/7r1)
• Blind spot assist (TWA), with code (JA7) Blind spot assist
  • Actuation of left Blind Spot Assist readiness and warning indicator (M21/6e2) and right Blind Spot Assist readiness and warning indicator (M21/7e2)

For this purpose the left front door control unit reads in the following sensors, signals, operating switches, and buttons:

• Driver door IR receiver unit, with code (FZ8) Comfort opening/closing with IR remote control
• Feedback contact for driver door central locking actuator
• Status of driver door central locking rotary tumbler switch (M14/6s1)
• Hall signals from driver door power window motor
• Driver door control panel (S47) with integrated switches and buttons
  • Driver power window button (S47s1) and passenger power window button (S47s2)
  • Left vent window button (S47s3) and right vent window button (S47s4), with code (W32) Electric rear vent window in passenger compartment

If the left front door control unit recognizes that the switch integrated into the driver door control panel is actuated for a time period of t 25 s, the signal is ignored and a fault is stored. An actuation signal is not issued directly nor sent to interior CAN.

When the corresponding switch or button is actuated again, the left front door control unit must previously detect the park position of the respective switch or button.

In addition, the left front door control unit communicates with the following control units via the interior CAN:

• With electronic ignition lock control unit (EZS) (N73)
  • The left front door control unit transmits, for example "KB_TF_AUF (convenience feature from left front door control unit, open)"
  • The left front door control unit receives, for example, B. "KB_FVL (convenience feature, open or close left front window)"
  • The left front door control unit receives, for example, Blind spot assist OFF readiness and warning indicator, with code (JA7) Blind spot assist
  • The left front door control unit receives, for example, Blind spot assist OFF readiness and warning indicator illuminates yellow, with code (JA7) Blind spot assist
  • The left front door control unit receives, for example, Blind spot assist OFF readiness and warning indicator illuminates red, with code (JA7) Blind spot assist
• With the instrument cluster (A1)
  • The left front door control unit receives, for example "KL_58D_B (instrument illumination brightness)"
• With airbag Lowline control unit (N214), except code (SH6) Thoraxbag for driver (in backrest), except code (SH7) Thoraxbag for driver and front passenger (in backrest) or except code (SH9) Windowbag for driver and front passenger or with Highline airbag control unit (N215), with code (SH6) Thoraxbag for driver (in backrest), with code (SH7) Thoraxbag for driver and front passenger (in backrest) or with code (SH9) Windowbag for driver and front passenger
  • The left front door control unit receives, for example, "CRASH (ARMADA crash waves)"
• With the SAM control unit (N10)
  • The left front door control unit transmits, for example "FBF_TF (passenger window lifter control)"
  • The left front door control unit receives, for example "T_AUSSEN (outside air temperature)"
• With overhead control panel control unit (OCP) (N70) with code (LD0) dome lamp with reading lamp on driver/passenger
  • The left front door control unit receives for example "FESTE_ST_F (status of driver window)"