Radar sensor system switch on/off, function - GF30.30-P-3120LE

ENGINES 156, 273, 275 in MODEL 216 up to 31.8.10 with CODE (233) Distronic Plus as of model year 2009/YoM 08 

ENGINES 156, 272, 273, 275, 642, 629 in MODEL 221 up to 31.8.10 with CODE (233) Distronic Plus as of model year 2009/YoM 08 

Automatic switch-off shown (on West Europe version) 

Function requirements for radar sensor system switch on/off, general 

• Circuit 61 ON (engine running)

Radar sensor system switch-on/switch-off, general 

Due to legal requirements on the 24 GHz radar system (short range radar), the radar sensor system is automatically switched off in certain protected areas around radio astronomy stations.

Function sequence for radar sensor system switch-on/switch-off 

The function sequence is described in the following steps:

• Automatic switch-off and switch on function sequence (for the Western Europe version) 
• Function sequence for manual shutoff and switching on 

Function sequence for automatic switch-off and switch on (for the Western Europe version) 

If the vehicle is in a protected area, this is detected by the GPS/ navigation system (G  lobal P  ositioning S  ystem).

If the vehicle drives into a protected area, shutoff of the DISTRONIC PLUS occurs incl. the proximity warning system, the Brake Assist System PLUS and the PRE-SAFE brake. Shutoff only occurs if all regulating processes which the radar system uses have ended.

When a respective assistant system is active at the point in time of automatic shutoff it will display the message "DISTRONIC PLUS switched off automatically, see operator's manual" in the multifunction display of the instrument cluster. In addition, a warning tone is sounded.

If the vehicle is switched off within a protected area, the current position and the current protected area are stored in the radar sensors control unit (SGR) (N62/1). This ensures that, for a restart of the vehicle and not yet present GPS coordinates, shutoff remains present.

If the driver tries to activate the radar sensor system manually again within a protected area the message "Radar sensor system switched off automatically" is issued.

When the vehicle leaves the protected area, the radar sensor system is switched on again automatically. For an activated DISTRONIC PLUS the message "DISTRONIC PLUS available again" is issued. The proximity warning system shows that it is functional again through display of the proximity graphic and the distance warning readiness indicator in the multifunction display.

The special equipment DISTRONIC PLUS is only available in combination with the global positioning system navigation system (COMAND controller unit (A40/3) with navigation) in Western Europe due to the automatic shut-off.

Function sequence for manual shutoff and switching on 

The driver can perform a manual shutoff of the radar sensor system using the LH and RH multifunction steering wheel button group (S110, S111) in menu "Settings", menu item "Radar sensor system" in the instrument cluster.

To use the support systems needed by the radar sensor system, the driver must reactivate the radar sensor system using the menu on the instrument cluster.

	Component description for instrument cluster	A1 MODEL 216.3, 221.0/1 except 221.095/195	GF54.30-P-6000LE
		MODEL 221.095/195	GF54.30-P-6000LEH
	Component description for COMAND controller unit	A40/3 MODEL 216, 221 with code (526) COMAND with a single DVD drive (without navigation) MODEL 216, 221 with code (527) COMAND APS with a single DVD drive (with navigation)	GF82.85-P-3136LE
		MODEL 216 with code (530) COMAND APS USA (with navigation) MODEL 221 with code (530) COMAND APS USA (with navigation)	GF82.85-P-3136LEU
		MODEL 216 with code (529) HIGH Class Japan MODEL 221 with code (529) HIGH Class Japan	GF82.85-P-3136LEJ
	Component description for radar sensors control unit	N62/1	GF30.30-P-3301LE