Parking system control unit component description - GF54.65-P-5002GN

Model 166 as of model year 2016 with code 235 (Active Parking Assist) 

Model 292 with code 235 (Active Parking Assist) 

Shown on model 292 

Location 

The parking system control unit is located under the rear bench seat on the left side in the direction of travel.

Tasks 

The parking system control unit is responsible for the following tasks:

• Controlling functions 
• Reading in of signals 
• Evaluation of input factors 
• Actuation of components 
• Sending signals 

Controlling functions 

The parking system control unit controls the Active Parking Assist function.

Reading in of signals 

The input factors are read in via the following connections:

• Direct line 
• Chassis CAN 2 (CAN E2) 

Direct line 

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

• Left front outer parking system distance sensor (B8/1)
• Left front center parking system distance sensor (B8/2)
• Left front inner parking system distance sensor (B8/3)
• Right front inner parking system distance sensor (B8/4)
• Right front center parking system distance sensor (B8/5)
• Right front outer parking system distance sensor (B8/6)
• Outer right rear parking system distance sensor (B8/7)
• Inner right rear parking system distance sensor (B8/8)
• Inner left rear parking system distance sensor (B8/9)
• Outer left rear parking system distance sensor (B8/10)
• Left rear center parking system distance sensor (B8/11)
• Right rear center parking system distance sensor (B8/12)

Chassis CAN 2 

The following signals are read in via chassis CAN 2:

• Vehicle speed
• Drive position status
• Data from rain/light sensor with additional function (B38/2)
• Parking system button status (N72/1s8)
• Status of Electronic Stability Program control unit (N30/4)
• Wheel speeds and wheel rotation direction
• Electric power steering torque sensor (A91b1) signal (toothed rack position)
• Terminal 15 status
• Switch position of combination switch (S4)
• Left multifunction steering wheel button group signal (S110)
• Trailer recognition status (with CODE 550 (Trailer hitch))
• Driver seat belt fastened/unfastened status
• Driver door open/closed status

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 direct lines:

• Front parking system warning indicator (A44/1)
• Rear parking system warning indicator (A44/3)
• Parking system distance sensors

Sending signals 

The parking system control unit transmits the following signals via chassis CAN 2:

• Request to display message or issue warning tone
• Parking system status indication request
• Electric power steering request (steering angle)
• Information on distance to obstacle (remaining distance to obstacle)

Wiring diagram for Parktronic system (PTS) control unit

PE54.65-P-2101-97NBA