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Home >> Mercedes Benz >> 2008 >> GL450 4WD >> Repair and Diagnosis >> Electrical >> Motors, Switches, Relays >> Charging, Control Panel/Cluster, Data Bus, Fuses/ Relays, PARKTRONIC, Sensors & Switches - 164 Chassis >> Basic Knowledge >> Driving, function - GF54.65-P-3000GZ

Driving, function - GF54.65-P-3000GZ

MODEL 164.1 /8 with CODE (220) Parktronic system (PTS) 

Fig 1: Driving - Function Diagram
G05259051Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Function requirements: 

General 

When the ignition is switched on (circuit 15 ON), the PTS control unit performs a self-test. If there are no malfunctions or faults, this is indicated by the lighting of the standby bar in the middle of the warning indicators.

Activating or deactivating the Parktronic system (PTS) (with offroad package code 430) 

The Parktronic system (PTS) can be switched off or on manually via the PTS OFF switch in the upper control panel control unit. When the Parktronic system (PTS) is off, the function LED in the PTS OFF switch is lit; conversely the LED is off when the Parktronic system (PTS) is activated.

When the ignition is switched on (circuit 15 ON) the Parktronic system (PTS) is automatically activated, even if it was deactivated in the previous ignition sequence.

Activating or deactivating the Parktronic system (PTS) (except offroad package code 430) 

The Parktronic system (PTS) can be switched on or off using the menu in the instrument cluster.

When the ignition is switched on (circuit 15 ON) the Parktronic system (PTS) is automatically activated, even if it was deactivated in the previous ignition sequence.

Trailer operation 

The detection area at the rear of the vehicle is deactivated when a trailer is connected. The rear SAM control unit detects the trailer connector and sends a corresponding signal to the PTS control unit.

The brightness of the warning indicators is automatically adjusted to suit the ambient light conditions. When the rain/light sensor reports "night", the warning indicators are dimmed. Conversely by "day" the warning indicators are actuated at full brightness. With an acoustic warning, the PTS control unit sends a command to the COMAND operating, display and control unit which passes this information via MOST to the amplifier for the sound system. The amplifier for the sound system switches the entire sound system to MUTE.

When the vehicle is in operation, the Parktronic system (PTS) enters standby mode at speeds below 40 km/h to 16 km/h, i.e. the PTS control unit, the warning indicators and the sensors are supplied with power but do not yet function.

Front monitoring range active (Selector lever position "D") 

When the vehicle drops below the lower limit speed of 16 km/h, the Parktronic system (PTS) changes to measurement mode.

If obstructions are detected in front of the vehicle, the driver is alerted visually at first by the lighting of various LEDs in the driver-side instrument panel PTS warning indicator. When the range drops below a certain distance, the warning also becomes acoustic, first with an intermittent tone and then with a continuous signal (see table below).

When the vehicle exceeds the upper limit speed of 18 km/h, the Parktronic system (PTS) changes back to the standby mode.

Front and rear monitoring ranges active (Selector lever position "R" or "N") 

When the vehicle drops below the lower limit speed of 16 km/h, the Parktronic system (PTS) changes to measurement mode. If obstructions are detected in front of or behind the vehicle, the driver is alerted visually at first by the lighting of various LEDs in the driver-side instrument panel PTS warning indicator and/or in the rear dome lamp PTS warning indicator. When the range drops below a certain distance, the warning also becomes acoustic, first with an intermittent tone and then with a continuous signal (see table below).

When the vehicle exceeds the upper limit speed of 18 km/h, the Parktronic system (PTS) changes back to the standby mode.

ACTUATION OF THE DRIVER-SIDE INSTRUMENT PANEL PTS WARNING INDICATOR

Warning message LED Warning chime Distance
Outside (cm) Inside (cm)
Visual 1 (yellow) - - < 100
2 (yellow) - - < 80
3 (yellow) - - < 70
4 (yellow) - < 60 < 60
5 (yellow) - < 50 < 50
6 (yellow) - < 40 < 40
optical and acoustical 7 (red) Intermittent signal approx. 6 Hz < 30 < 30
8 (red) Continuous signal < 15 < 20
ACTUATION OF REAR DOME LAMP PTS WARNING INDICATOR

Warning message LED Warning chime Distance
Outside (cm) Inside (cm)
Visual 1 (yellow) - - < 120
2 (yellow) - - < 100
3 (yellow) - < 80 < 80
4 (yellow) - < 65 < 65
5 (yellow) - < 50 < 50
6 (yellow) - < 40 < 40
optical and acoustical 7 (red) Intermittent signal approx. 6 Hz < 30 < 30
8 (red) Continuous signal < 20 < 20
Sensors, component description   GF54.65-P-5010GZ 
Warning indicator, component description   GF54.65-P-5020GZ 
Rain/light sensor, component description   GF54.21-P-6000GZ 
Front SAM control unit, component description   GF54.21-P-7010GZ 
Rear SAM control unit, component description   GF54.21-P-7030GZ 
Parktronic system (PTS) control unit, component description   GF54.65-P-5000GZ 
Overhead control panel control unit, component description   GF82.20-P-5216GZ
Upper control panel control module component description With AIRmatic (air suspension with level adjustment and adaptive damping system ADS), code 489, except offroad package, code 430 GF54.21-P-6040GZ 
  Model 164.8 with AIRmatic (air suspension with level adjustment without adaptive damping system ADS), code 489, and USA version, code 494 GF54.21-P-6040GZA 
  With Airmatic (air suspension with level adjustment and adaptive damping system ADS), code 489, with Offroad package, code 430 and USA version, code 494 GF54.21-P-6040GZU 
Electronic ignition/starter switch control unit (EIS) component description   GF80.57-P-6000GZ
Central gateway control unit, component description   GF54.21-P-4170GZ