Keyless-Go Control Unit Component Description - GF80.61-P-4204LF

Model 217, 222 

Model 222 as of 01.06.2017, model 217.3 as of 01.12.2017, shown on model 222 

Location 

The KEYLESS-GO control unit is attached behind the left rear seat in front of the partition wall for the trunk.

Shown on model 217.4 as of 01.12.2017 

Courtesy of MERCEDES-BENZ USA

Location 

The KEYLESS-GO control unit is mounted under the cover of the rear-end floor behind the right rear seat.

Model 222 up to 31.05.2017, model 217 up to 30.11.2017, shown on model 222.0 

Courtesy of MERCEDES-BENZ USA

Location 

The KEYLESS-GO is located on the left control unit carrier in the trunk.

Tasks 

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 
• KEYLESS-GO-LIN (LIN B27) 
• Interior CAN (CAN B) 

Direct line 

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

• Driver door KEYLESS-GO door handle (A17/5) (with code 889 (KEYLESS-GO))
• Passenger door KEYLESS-GO door handle (A17/6) (with code 889 (KEYLESS-GO))
• Left rear KEYLESS-GO door handle (A17/3) (model 222 with code (889) KEYLESS-GO)
• Right rear KEYLESS-GO door handle (A17/4) (model 222 with code (889) KEYLESS-GO)
• FM, AM, ZV, DAB and KEYLESS-GO antenna amplifier (A2/18)

KEYLESS-GO LIN 

The signals from the following components are read in via the KEYLESS-GO LIN:

• Rear switching module (N38) (with code 871 (HANDS-FREE ACCESS))

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:

• KEYLESS-GO trunk antenna (A2/35) (with code (889) KEYLESS-GO)
• Left front door KEYLESS-GO antenna (A2/38) (model 217 with CODE 889 (KEYLESS-GO))
• Left rear door KEYLESS-GO antenna (A2/39) (model 222 with code (889) KEYLESS-GO)
• Right front door KEYLESS-GO antenna (A2/40) (model 217 with CODE 889 (KEYLESS-GO))
• Right rear door KEYLESS-GO antenna (A2/41) (model 222 with code (889) KEYLESS-GO)
• Center console KEYLESS-GO antenna (A2/60)

Wiring diagram for KEYLESS-GO control unit

PE80.61-P-2101-97SEA