Locking, function - GF80.61-P-2010Q

MODEL 209.3 /4 with CODE (889) Keyless go 

Fig 1: Locking Function - Model 209.3 /4 With Code (889) Keyless Go

Courtesy of MERCEDES-BENZ USA

Lock 

Requirements:

• Circuit 30
• Vehicle in «Unlocked» state
• All doors closed
• No remote control key (A8/1) inserted in EIS control module (N73)

Possible control elements for system activation: 

• Left door handle switch (S17/19)
• Right door handle switch (S17/21)
• Keyless go trunk lid button (S62/21)

Function sequence using driver's door as example 

1. The left door handle switch (S17/19) is actuated by pressing the button on the door handle of the driver's door.

   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 the Keyless go passenger compartment control module (N103) The remote control key (A8/1) determines its position in relation to the vehicle (difference: inside/outside of vehicle).
4. The remote control keys (A8/1) transmits its position to the rear module Keyless go rear 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. If the access authorization code is correct the signal "Closing CL" is stored on the CAN class B bus and the vehicle is locked. If applicable, circuit 15R is switched off and the steering is locked.

If at least 1 remote control key (A8/1) is recognized outside the vehicle, the remote control keys (A8/1) remaining in the vehicle are ignored.

If the vehicle is locked with the remote control key (A8/1), the passenger compartment is checked. The remote control keys (A8/1) detected in the passenger compartment are ignored.