Parking System Control Unit, Component Description - GF54.65-P-5004FH
Model 238
Up To Model Year 2021
with code 235 (Active Parking Assist)
Shown on model 238.3
Shown on model 238.4
Location
The parking system control unit is located in the trunk on the left side wall (model 238.3) or in the trunk well (model 238.4).
Tasks
The parking system control unit has the following tasks:
- Reading in of signals
- Evaluation of input factors
- Actuation of components
- Output of signals
Reading in of signals
The input factors are read in via the following connections:
- Direct line
- HSVL line (high-speed video link)
- Suspension FlexRay (Flex E)
Direct line
The signals from the following components are read via direct lines:
- Left telephone antenna (A2/102) (model 238.4 with code 503 (Pre-installation for Remote Parking Pilot))
- Right telephone antenna (A2/103) (model 238.4 with code 503 (Pre-installation for Remote Parking Pilot))
- Telephone antenna splitter (A2/109) (model 238.4 with code 503 (Pre-installation for Remote Parking Pilot))
- Telephone and Remote Parking Pilot/stationary heater antenna changeover switch (A2/155) (model 238.4 with code 503 (Pre-installation for Remote Parking Pilot) and code 379 (Telephone module with Bluetooth® (SAP profile)), code 386 (Convenience Telephony) or code 899 (Multifunction telephony))
- Remote Parking Pilot/stationary heater antenna (A2/164) (model 238.3 with code 503 (Pre-installation for Remote Parking Pilot))
- Remote Parking Pilot/stationary heater antenna splitter (A2/167) (with code 228 (Stationary heater) and code 503 (Preinstallation for Remote Parking Pilot))
- Outer left front parking system distance sensor (B8/1)
- Center left front parking system distance sensor (B8/2)
- Inner left front parking system distance sensor (B8/3)
- Inner right front parking system distance sensor (B8/4)
- Center right front parking system distance sensor (B8/5)
- Outer right front 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)
- Center left rear parking system distance sensor (B8/11)
- Center right rear parking system distance sensor (B8/12)
HSVL line
The image data from each of the following assembly parts is read in via a separate HSVL line:
- Reversing camera (B84/3) (with CODE 218 (Reversing camera))
- Left outside mirror 360° camera (B84/7) (with code 501 (360° camera))
- Right outside mirror 360° camera (B84/8) (with code 501 (360° camera))
- Front 360° camera (B84/9) (with code 501 (360° camera))
- Reversing camera 360° system (B84/10) (with code 501 (360° camera))
Chassis FlexRay
The parking system control unit also reads in the following information over the suspension FlexRay:
- Terminal 15 status
- Signal "Engine running" or "Drive train operational"
- Wheel speed and wheel rotation direction
- Driving stage engaged
- Electrical power steering control unit status (N68)
- Electric power steering torque sensor (A91b1) signal (toothed rack position)
- Front wheel angle
- Steering torque applied by driver (Hands-off detection status)
- Remote Parking Pilot status (with code 503 (Pre-installation for Remote Parking Pilot))
- Status of parking space selection
- Speed control/cruise control status
- Parking brake status
- Brake status
- ESP® status
- Remote Parking Pilot KEYLESS-GO status (with code 503 (Pre-installation for Remote Parking Pilot))
- Trailer operation status (with code 550 (Trailer hitch))
- Blind Spot Assist warning (with code 234 (Blind Spot Assist))
- Blind Spot Assist brake request (with code 234 (Blind Spot Assist))
- Steering wheel angle and steering wheel velocity
- Vehicle level (with code 489 (AIR BODY CONTROL))
- PARKTRONIC button status (except code 489 (AIR BODY CONTROL))
- Status of parking system button
- Accelerator pedal position
- Ambient illumination status (with code 501 (360° camera))
- Outside mirror housing status (with code P49 (Mirror package))
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 parking system control unit actuates the parking system distance sensors and the parking system speaker (H13/4) via direct lines.
The signals for activating the Audio/COMAND display are sent by the parking system control unit over the suspension FlexRay. The functions that use these signals are described in the individual function descriptions (see block diagram or function schematic).
Output of signals
The parking system control unit also sends the following information or requests over the suspension FlexRay:
- Status of parking system
- Engaging gear range
- Increase/reduce the braking torque
- Control mode request (speed control/cruise control)
- Request for front wheel angle (steering angle)
- Information on distance to obstacle (remaining distance to obstacle)
- Request for braking mode
- Request for folding in outside mirror housings (with code P49 (Mirror package))
- Request for rear camera cover
- Remote Parking Pilot request (with code 503 (Pre-installation for Remote Parking Pilot))
- Remote Parking Pilot vehicle locking request (with code 503 (Pre-installation for Remote Parking Pilot))
- Request for ambient illumination (with code 501 (360° camera))
- Parking system display in Audio/COMAND display
- Output of system and warning messages
The parking system control unit sends the image data via a HSVL line to the head unit (A26/17).
Variants
- Advanced Park Assist (as of 01.06.2018 with code 235 (Parking Pilot with PARKTRONIC))
- Parking Pilot Entry (with code P44 (Parking Package) or code 235 (Parking Pilot with PARKTRONIC) and code 218 (Reversing camera))
- Parking Pilot High (with code 235 (Parking Pilot with PARKTRONIC) and code 501 (360° camera))
- Parking Pilot High Bluetooth (with code 235 (Parking Pilot with PARKTRONIC), code 501 (360° camera) and code 503 (Pre-installation for Remote Parking Pilot))
| Parking system control unit wiring diagram | PE54.65-P-2105-97DCA |