LEMON Manuals: Even more car manuals for everyone
Home >> Mercedes Benz >> 2013 >> Sprinter 2500, Van Passenger Extended >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Central Locking System -- 906 Chassis >> Basic Knowledge >> Keyless Entry, Function - GF80.61-D-0006H

Keyless Entry, Function - GF80.61-D-0006H

MODEL 906.611/613/631/633/635/637/653/655/657/711/713/731/733/735 with CODE (FY9) Keyless entry+slide with CODE (T55) Electrical actuation for right sliding door 

MODEL 906.611/613/631/633/635/637/653/655/657/711/713/731/733/735 with CODE (FY9) Keyless entry+slide with CODE (T56) Electrical actuation for left sliding door 

General 

The Keyless Entry system is planned primarily for commercial use and is intended to increase convenience and time saving while loading or unloading the vehicle from the rear.

The system includes the following functions:

When the Keyless Entry system is activated, the E-LST is automatically unlocked or opened when the transmitter key (A8/1) approaches the vehicle (approx. 4 m).

When the transmitter key moves away from the vehicle (approx. 0.5 m), the E-LST is automatically closed if open and the vehicle is locked.

Wake-up/authentication 

When approaching the vehicle, the transmitter key is woken up and identified by the vehicle.

Then the "Hash value" transmitted by the transmitter key for authentication to the EIS control module (N73) is relayed via the Controller Area Network bus, class B (interior) (CAN B).

If an authentic key is recognized, the system attempts to locate the transmitter key, otherwise all further activities are terminated and the system waits for the new transmitter key to be woken up.

Key locating 

The Keyless Entry control unit (N69/5) receives a signal for locating the key from the following antennas:

IMPORTANT On models 906.611/631/711/731 the Keyless Entry load compartment antenna 2 is omitted.

These antennas are located in the vehicle so that the current position of the transmitter key can be recognized by comparing the field strength (position in relation to vehicle).

By evaluating the chronological changes in the field strength it is also possible to detect motion of the transmitter key.

The following cases must be differentiated:

Key locating is accomplished continuously as long as an authentic transmitter key is within range.

After an authentic transmitter key is recognized, the Keyless Entry control unit transmits a corresponding signal to the EIS control module via the CAN B, depending on the location of the key.

The result of key locating is decisive for calling up locking system functions as follows:

Unlocking or locking the vehicle with Keyless Entry system is actuated via the usual turn signal confirmation central locking (CL).

Activation/deactivation 

The Keyless Entry system is activated or deactivated via a button on the left bottom control panel in the vicinity of the rotary light switch (S1). When the system is activated, the function is indicated by a light emitting diode (LED) in the button.

IMPORTANT As long as the authentic transmitter key is inserted in the EIS control module, the Keyless Entry system remains deactivated. However, locking the E-LST while driving is always possible.

Keyless Entry, function schematic GF80.61-D-0006-01H 
Keyless Entry, networking of components GF80.61-D-0006-02H 
Keyless Entry, warning indicators GF80.61-D-0006-03H 
Activating or deactivating Keyless Entry, function GF80.61-D-2013H 
Keyless Entry authentication, function GF80.61-D-2014H 
Keyless Entry, transmitter key locating function GF80.61-D-2015H 
Opening or closing Keyless Entry electric load compartment sliding door (E-LST), function GF80.61-D-2016H 
Locking or unlocking Keyless Entry driver door, function GF80.61-D-2017H 
scientia non olet · About LEMON Manuals