Component description for KEYLESS-GO control unit - GF80.61-P-4204FQ

MODEL 218 with CODE 889 (Keyless Go)

Illustrated on model 218.3

Fig 1: Identifying Keyless-Go Control Unit Component - Illustrated On Model 218.3

Courtesy of MERCEDES-BENZ USA

Location

The KEYLESS-GO control unit is located behind the right paneling in the trunk.

Task

The Keyless Go control unit has the following purposes:

Reading in of sensors
Evaluation of input factors
Actuation of components

Reading in of sensors

The input factors are read in via the following connections:

Direct line
Interior CAN (CAN B)

Direct line

The signals from the following components are read via a direct line:

FM 1, AM, ZV and KEYLESS-GO antenna amplifier (A2/18) (model 218.3) or KEYLESS-GO antenna amplifier (A94/4) (model 218.9)
Left front KEYLESS-GO door handle (A17/1)
Right front KEYLESS-GO door handle (A17/2)
Left rear KEYLESS-GO door handle (A17/3)
Right rear KEYLESS-GO door handle (A17/4)

Interior CAN

The signals are read in by the KEYLESS-GO control unit via the interior CAN. The functions that use these signals are described in the individual function descriptions (see block diagram or function schematic).

Evaluation of input factors

The input factors that have been read in are evaluated by the integrated microprocessor and the relevant components are then actuated.

Actuation of components

The following components are actuated via a direct line:

Trunk KEYLESS-GO antenna (A2/35)
Left rear door KEYLESS-GO antenna (A2/39)
Right rear door KEYLESS-GO antenna (A2/41)
interior KEYLESS-GO antenna (A2/61)

Wiring diagram for Keyless Go control unit

PE80.61-P-2101-97XAA