Keyless Go control unit, component description - GF80.61-P-4204GM

MODEL 164.1 as of model year 2009 with CODE (889) KEYLESS-GO/AEJ 08 model refinement package

MODEL 164.8, 251.0/1 as of model year 2009 with CODE (889) KEYLESS-GO/AEJ 08

Model 164.1

Fig 1: Identifying Keyless Go Control Unit - Shown On Model 164.1

Courtesy of MERCEDES-BENZ USA

Location

The KEYLESS GO control unit is located behind the right panel in the trunk below the window.

Model 164.8 and model 251.0/1 up to 31.7.10, shown on model 251.0

Fig 2: Identifying Keyless Go Control Unit - Shown On Model 251.0

Courtesy of MERCEDES-BENZ USA

Location

The KEYLESS GO control unit is located in the trunk on the right

Model 164.8 and model 251.0/1 as of 1.8.10, shown on model 251.0

Fig 3: Identifying Keyless Go Control Unit - Shown On Model 251.0

Courtesy of MERCEDES-BENZ USA

Location

The KEYLESS-GO control unit located below the rear floor covering behind the left rear seat.

Task

The KEYLESS-GO control unit has the following purposes:

Reading in of signals

The input factors are read in via the following connections:

Direct line

The signals from the following components are read via direct lines:

Roof antenna module (A2/93)
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 KEYLESS-GO control unit reads in the following signals via the interior CAN:

The signals of the following components are read in over the interior CAN:

Status of KEYLESS-GO start/stop button (S2/3), transmitted by EZS control unit (N73)
Status of rear-end door handle switch (S88/9), transmitted by rear SAM control unit (N10/8)
Status of spare wheel carrier locked switch (S151/1) (with code (849) Spare tire carrier/spare tire), transmitted by rear SAM control unit
Status of spare wheel carrier open switch (S151/2) (with code (849) Spare tire carrier/spare tire), transmitted by rear SAM control unit
Status of spare wheel carrier control button (S151/3) (with code (849) Spare tire carrier/spare tire), transmitted by rear SAM control unit
Status of DIRECT SELECT gear selector switch (S16/13), transmitted by steering column tube (N80)
Status of service brake transmitted by ESP control unit (N47-5) (without model 164.195) or regenerative braking system control unit (N30/6) (on model 164.195)
Speed transmitted by instrument cluster (A1)
Status of RWTS button (S62/26) (with code (890) EASY-liftgate) transmitted by rear-end door closing control unit (N121/1)

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 components are actuated via the following connections:

Direct line

The following components are actuated via direct lines:

KEYLESS-GO trunk antenna (A2/35) (on model 164.8, 251.0/1 up to 31.7.10 and model 164.1)
Left rear door KEYLESS-GO antenna (A2/39)
Right rear door KEYLESS-GO antenna (A2/41)
KEYLESS-GO cockpit antenna (A2/60)
interior KEYLESS-GO antenna (A2/61)

Interior CAN

The following components are actuated over the interior CAN:

Rear-end door locking unit (A72), actuated by rear SAM control unit
Right rear door CL motor (M14/9), actuated by rear SAM control unit
Fuel filler flap CL motor (M14/10), actuated by rear SAM control unit
Spare wheel carrier CL motor (M14/13) (with code (849) Spare tire carrier/spare tire) actuated by rear SAM control unit
Left rear door CL motor (M14/8), actuated by front SAM control unit (N10)
Left front door CL motor (M14/6), actuated by left front door control unit (N69/1)
Right front door CL motor (M14/5), actuated by right front door control unit (N69/2)

Wiring diagram for KEYLESS-GO control unit	Model 164.8 up to 31.7.10 Model 164.1	PE80.61-P-2101-97MAA
	Model 164.8 as of 1.8.10	PE80.61-P-2101-97MAB
	Model 251 up to 31.7.10	PE80.61-P-2101-97RAA
	Model 251 as of 1.8.10	PE80.61-P-2101-97RAB