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Parking System Control Unit, Component Description - GF54.65-P-5002RR
Model 190 up to 11/30/18
up to model year 2019
With Code 220 (PARKTRONIC system (PTS))
Location
The parking system control unit is mounted behind the front passenger seat on the partition.
Tasks
The parking system control unit controls the PARKTRONIC function and has the following tasks:
- Reading in of sensors
- Evaluation of input factors
- Actuation of components
- Sending signals
Reading in of sensors
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:
- Rear parking system warning indicator (A44/3) (Function test)
- 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)
Chassis CAN 2
The parking system control unit also reads in the following information via suspension CAN 2:
- Terminal status of terminal 15
- Engine running or drive train operational
- Wheel speed and wheel rotation direction
- Vehicle speed
- Status of parking brake
- Gear range "R" engaged
- Ambient brightness
- Status of parking system button (N72/1s8)
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 direct lines:
- Rear parking system warning indicator
- Parking system distance sensors
Sending signals
The parking system control unit also transmits the following information or requests via suspension CAN 2:
- Request to show parking system warning indicator in the multifunction display (A1p13)
- Request to display messages or issue a warning tone
- Parking system status indication request
- Information on distance to obstacle
| Parking system control unit wiring diagram | PE54.65-P-2101-97HBA |
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.