LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Mercedes Benz >> 2004 >> E55 >> Repair and Diagnosis (Single Page) >> Body & Frame >> Ignition Switch/Steering Lock >> Central Locking System - 211 Chassis >> Basic Knowledge >> Unlocking, function - GF80.61-P-2009 >> Unlocking, function - GF80.61-P-2009TA
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Unlocking, function - GF80.61-P-2009TA

MODEL 211.2 with CODE (889) Keyless go 

Fig 1: Unlocking Function Diagram - Model 211.2 With Code (889) Keyless Go
G04985931

Unlock 

Requirements:

Possible control elements for system activation: 

Function sequence using driver's door as example 

  1. Actuate left door handle switch (S17/19) by slightly pulling on driver's door handle (t >0.1 s).

    IMPORTANT The keyless go system is waked up.

  2. A wake-up signal is transmitted to the remote control key (A8/1).
  3. The locating signals are transmitted from the keyless go trunk antenna (A2/35), to the rear bumper antenna (A2/31), the left rear keyless go door control module (N69/8), the right rear keyless go door control module (N69/9) and the passenger compartment keyless go control module (N103).

    IMPORTANT The remote control key (A8/1) determines its position in relation to the vehicle.

  4. The position of the remote control key (A8/1) is transmitted via the right antenna amplifier module (A2/65) to the rear module keyless go control module (N102).
  5. Checking rear module keyless go control module (N102) according to valid remote control key (A8/1).
  6. Transmitting access authorization code to EIS control module (N73).
  7. If the access authorization code is correct the signal "CL opening" is stored on the CAN class B bus.
  8. Parallel to this the "Actuate opening assist" signal is transmitted to the left rear door keyless go control module (N69/8) by the EIS control module (N73). The left front opening assist motor (M57) is actuated (the rotary tumbler of the door lock is unlocked and the door opens slightly).

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

Possible settings: 

Function sequence shown using rear-end door as example 

  1. Pull rear-end door handle (A12/1).

    IMPORTANT The signal is read in by the rear-end door control module (N111) and transmitted to the rear module keyless go control module (N102) via the EIS control module (N73).

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

7 If the access authorization code is correct the EIS control module (N73) actuates the rear-end door CL motor via the rear-end door control module (N111).

IMPORTANT Doors and tank flap remain locked.

  Remote control key, task/design/function   GF80.57-P-4101T 
  Electronic ignition/starter switch control module, location/purpose   GF80.57-P-4120T 
  Keyless go control module, location/purpose Left rear door Keyless Go control module GF80.61-P-4105T 
    Right rear door Keyless go control module GF80.61-P-4105TA 
    Rear module Keyless Go control module GF80.61-P-4105TB 
    Interior module Keyless Go control module GF80.61-P-4105TC