When reversing, both the rear and front zones are monitored.
The system is switched on automatically when the ignition key is turned to position 2 and remains active until the vehicle speed exceeds 15 km/h; the system is also switched off automatically.
Reactivation of PTS occurs when the vehicle speed drops below 15 km/h.
It is possible to force the PTS to be switched off using a switch installed on the vertical section of the console (see section Interior controls and equipment).
Attention! The correct functioning of the Parktronic system largely depends on the degree of contamination of the ultrasonic sensors installed on the front and rear bumpers. Interference may be caused by ultrasonic sources (including the screeching of air brakes of trucks).
The front zone is monitored by six ultrasonic sensors mounted in the front bumper cover (two in the middle and two in the corners), rear - four sensors in the rear bumper. The range of the sensors is 100 cm for the central front sensors, 60 cm for the corner front sensors, 120 cm for the central rear sensors and 80 cm for the outer rear sensors.
The minimum permissible distance between the sensor and the obstacle is 15 cm for corner sensors and 20 cm for central sensors, after which the sensitivity threshold is exceeded. Keep the bumper surface clean.
PTS indicator lights
1 - Indicator on the instrument panel
2 - Indicator in the rear light assembly
3 - Frame
4 - Segments
A 3-second acoustic signal warns the driver of dangerous approach to an obstacle during parking; in addition, special light indicators are provided on the instrument panel and in the rear interior light assembly. The indicators are divided into 6 yellow and 2 red segments, the full activation of which corresponds to the distance to the nearest obstacle.
When connecting the trailer wiring to the towbar connector (with the appropriate vehicle configuration) the system automatically switches off.
In case of malfunction of PTS, red segments of all light indicators of the system are activated and a 3-second acoustic signal is emitted - check the cleanliness of bumper surfaces. If necessary, drive the car to a Mercedes-Benz service station to perform the necessary restorative repair of the system.