Reversing, function - GF54.65-P-4001Q

WARNING: This page is about a different car, the 2009 Mercedes-Benz CLK350 and 2008 Mercedes-Benz CLK350. However, it is still accessible from the selected car via links, so may be relevant.

MODELS 209.3 /4 with CODE (220) Parktronic System (PTS)

Shown on model 209.3

Fig 1: Identifying Front/Rear Bumper PTS Sensor Unit Obstacles Detection Range

Courtesy of MERCEDES-BENZ USA

Function requirements

Circuit 15 ON
Parking brake not operated
Vehicle speed ≤ 16 km/h
Reverse gear engaged (on transmission 716)
Selector lever in position "R" or "N" (on transmission 722)
No trailer operation (with code (550) trailer hitch)

Function

When reversing area C and D behind the vehicle and area A and B in front of the vehicle is monitored as well.

The front bumper PTS sensor unit (A42) detects obstacles:

in area A (15 cm to 60 cm)
in area B (20 cm to 100 cm)

The rear bumper PTS sensor unit (A43) detects obstacles:

in area C (20 cm to 120 cm)
in area D (20 cm to 80 cm)

Reversing is detected

on transmission 716:

via the backup lamp switch and front SAM control unit with fuse and relay module

on transmission 722:

via the selector lever position and electronic selector lever module control unit

Warning information

The Parktronic control unit actuates the center instrument panel PTS warning indicator (A44/4) or the rear PTS warning indicator (A44/3).

Depending on the distance to the obstacle, visual and, if necessary, acoustic warning information is given out.

The acoustic warning signals have different frequencies so that the driver can decide quickly if the obstacle is in front of or behind the vehicle.

The warning signal for the center instrument panel PTS warning indicator (A44/4) has a higher frequency.

The rear PTS warning indicator (A44/3) is deactivated when reversing with trailer (with code (550) trailer hitch). The area in front of the vehicle continues to be monitored.

The trailer is detected via the trailer hitch socket (13-pin) and trailer recognition control unit.

Deactivation

The Parktronic system (PTS) can be switched off and on manually via the PTS OFF switch in the upper control panel control unit, feedback takes place via an LED in the PTS OFF switch.

PTS control unit, location/task		GF54.65-P-4100Q
Sensors, location/task/function		GF54.65-P-4102T
Warning display, location/task/design/function	Rear PTS warning indicator	GF54.65-P-4104TA
Warning display, location/task/design/function	PTS warning display, center of instrument panel	GF54.65-P-4104T
Upper control panel control unit, location/task/design/function		GF54.21-P-4105Q