Parking System Control Unit, Component Description - GF54.65-P-5004LFM

Model 217

as of model year 2018

Model 222

as of model year 2018

with code 235 (Parking Pilot with PARKTRONIC)

Shown on model 222

Fig 1: Parking System Control Unit Components Location - Model 222 As Of Model Year 2018 With Code 235

Courtesy of MERCEDES-BENZ USA

Show on model 217.4

Courtesy of MERCEDES-BENZ USA

Location

The parking system control unit is in the trunk on the left side wall (model 222 and model 217.3) or on the left, rear wheel arch (model 217.4).

Tasks

The parking system control unit has the following tasks:

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:

Remote Parking Pilot/stationary heater antenna (A2/164) (with code 503 (Preinstallation 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 235 (Parking Pilot with Parktronic))
Left outside mirror 360° camera (B84/7) (with code P44 (Parking package))
Right outside mirror 360° camera (B84/8) (with code P44 (Parking package))
Front 360° camera (B84/9) (with code P44 (Parking package))
Reversing camera 360° system (B84/10) (with code P44 (Parking package))

Chassis FlexRay

The parking system control unit also reads in the following information over the suspension FlexRay:

Circuit 15 status
Signal "Engine running" or "Drive train operational"
Wheel speed and wheel rotation direction
Engaged gear (transmission 716) or engaged gear range (transmission 725)
Electrical power steering control unit status (N68)
Electric power steering torque sensor (A91b1) signal (toothed rack position)
Front wheel angle
Steering torque of the driver (Hands-Off/Hands-On Detection status)
Remote Park Control status (with code 503 (Preinstallation for Remote Parking Pilot))
Status of parking space selection
Parking brake, brake, ESP® status
Remote Park Control KEYLESS GO status (with code 503 (Preinstallation for Remote Parking Pilot))
Trailer operation status (with code 550 (Trailer hitch))
Warning from Blind Spot Assist (with code 234 (Blind Spot Assist)) or Active Blind Spot Assist (with code 237 (Active Blind Spot Assist)) or Active Lane Keeping Assist (with code 238 (Active Lane Keeping Assist))
Brake request from Blind Spot Assist (with code 234 (Blind Spot Assist)) or Active Blind Spot Assist (with code 237 (Active Blind Spot Assist)) or Active Lane Keeping Assist (with code 238 (Active Lane Keeping Assist))
Steering wheel angle and steering wheel velocity
Vehicle level (with code 489 (AIR BODY CONTROL))
Status of PARKTRONIC button
Parking system button status
Accelerator pedal position
Ambient illumination status (with code P44 (Parking package))
Outside mirror housing status (with code P49 (Mirror package))

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.

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 Park Control request (with code 503 (Preinstallation for Remote Parking Pilot))
Remote Park Control lock vehicle request (with code 503 (Preinstallation for Remote Parking Pilot))
Request for ambient illumination (with code P44 (Parking package))
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

Parking Pilot Entry (with code 235 (Parking Pilot with PARKTRONIC))
Parking Pilot Entry (with code 235 (Parking Pilot with PARKTRONIC) and code 503 (Preinstallation for Remote Parking Pilot))
Parking pilot, High (with code P44 (Parking pilot))
Parking Pilot High (with code P44 (Parking package) and code 503 (Preinstallation for Remote Parking Pilot))

Parking system control unit wiring diagram