KEYLESS-GO, function - GF80.61-P-0005LE

MODEL 216.3, 221.0 /1 with CODE (889) KEYLESS-GO as of model year 2009 /YoM 08

KEYLESS-GO (KG) general

The KEYLESS-GO system allows access to the vehicle and starting the vehicle engine without using the transmitter key (A8/1). It is sufficient to just carry the transmitter key

Operation of the central locking (CL) via the transmitter key remains possible parallel to the KEYLESS-GO functions. The anti-theft alarm system (ATA) (with code (551) Anti-theft alarm system (ATA)) functions in the same manner as when locking/ unlocking the CL with the transmitter key.

The KEYLESS-GO system comprises the following partial functions:

Function sequence for position definition of transmitter key

The following partial functions are described in separated documents:

Locking/unlocking, function
Engine start/stop, function

Function sequence for position determination of transmitter key (on model 216)

A position determination of the transmitter key is required for the individual functions.

When the

Trunk KEYLESS-GO antenna (A2/35),
Left door KEYLESS-GO antenna (A2/39),
Right door KEYLESS-GO antenna (A2/41),
Center console KEYLESS-GO antenna (A2/60) and
Interior compartment KEYLESS-GO antenna (A2/61) (up to 31.8.10).

are activated by the KEYLESS-GO system, the transmitter key can determine the area (A, B, C, D or E) in which it is located.

Fig 1: Function Sequence For Position Determination Of Transmitter Key (On Model 216)

Courtesy of MERCEDES-BENZ USA

Function sequence for position determination of transmitter key (on model 221)

A position determination of the transmitter key is required for the individual functions.

When the

Trunk KEYLESS-GO antenna (A2/35),
Left rear door KEYLESS-GO antenna (A2/39),
Right rear door KEYLESS-GO antenna (A2/41),
Center console KEYLESS-GO antenna (A2/60) and
Interior compartment KEYLESS-GO antenna (A2/61) (up to 31.8.10)

are activated by the KEYLESS-GO system, the transmitter key can determine the area (A, B, C, D or E) in which it is located.

Fig 2: Function Sequence For Position Determination Of Transmitter Key (On Model 221)

Courtesy of MERCEDES-BENZ USA

The determined position is transmitted by the transmitter key via radio signal. The rear window antenna amplifier module (A2/12) edits the signal and relays it to the KEYLESS-GO control unit (N69/5).

KEYLESS-GO, location of components	Model 216	GF80.61-P-0005-01LA
KEYLESS-GO, block diagram		GF80.61-P-0005-02LE
Locking/unlocking, function		GF80.61-P-2008LE
Engine start/stop, function		GF80.61-P-3012LE