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Unlock, function - GF80.61-P-2009Q

MODEL 209.3 /4 with CODE (889) Keyless go 

Fig 1: Unlock Function - Model 209.3 /4 With Code (889) Keyless Go
G04960185Courtesy of MERCEDES-BENZ USA

Unlock 

Requirements:

Possible control elements for system activation: 

Function sequence using driver's door as example 

  1. Actuation of left door handle switch (S17/19) by pulling door handle on driver's door.

    IMPORTANT The keyless go system is woken up.

  2. The wake up signal is transferred via the Keyless go antennas (A2/31, A2/35, A2/38, A2/40) and the Keyless go passenger compartment control module (N103) to the remote control key (A8/1).
  3. Locating signals are transmitted via the Keyless go antennas (A2/31, A2/35, A2/38, A2/40) and Keyless go passenger compartment control module (N103).

    IMPORTANT The remote control key (A8/1) determines its position in relation to the vehicle (difference: inside/outside of vehicle).

  4. The remote control key (A8/1) transfers its position to the Keyless go rear module control module (N102).
  5. Checking rear module keyless go control module (N102) according to valid remote control key (A8/1).
  6. Transfer of access authorization code to EIS control module (N73).
  7. When the access authorization code is valid, the «Open CL» signal is sent to the CAN B bus.
  8. Parallel to this, the EIS control module (N73) sends the signal «Activate opening aid» to the left front door Keyless go control module (N69/8). The left front opening assist motor (M57) is actuated. (Opening assist is only actuated at the control point)

IMPORTANT The actuation of the central locking depends on the adjustment of the remote control key (A8/1).

Possible settings:

IMPORTANT Operating point driver's door: Selective unlocking (only driver's door)

Other operating points: Global unlocking.

Function sequence using trunk lid as example 

Requirements:

  1. Pull handle on trunk lid (actuate trunk lid outer actuation button (S88/8)).

IMPORTANT The signal is read in by the rear SAM control module with fuse and relay module (N10/2) and is transmitted to the keyless go rear control module (N102) via the EIS control module (N73).

2 to 6 See «Function sequence using driver's door as example».

  1. When the access authorization code is valid, the signal «Release trunk lid» is transferred to the CAN B bus.

IMPORTANT Only the trunk lid is unlocked, door and tank flap remain locked.

  Remote control key purpose/design/function   GF80.57-P-4101T 
  Keyless go control module, location/purpose Left door Keyless go control module GF80.61-P-4105Q 
    Right door Keyless go control module GF80.61-P-4105QA 
    Keyless go rear control module GF80.61-P-4105QB 
  Electronic ignition/starter switch control module, location/purpose   GF80.57-P-4120Q 
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