158  
					Driving and operating  
					If r is pressed once within an  
					ignition cycle, the front parking assist  
					is reactivated if the vehicle speed  
					goes below a certain value and if the  
					vehicle speed has not exceeded  
					16 mph beforehand.  
					Important hints for using the  
					parking assist systems  
					Special conditions apply if there  
					are taller vehicles in the vicinity  
					(e.g. off-road vehicles, mini vans,  
					vans). Object identification and  
					correct distance indication in the  
					upper part of these vehicles  
					cannot be guaranteed.  
					9 Warning  
					Under certain circumstances,  
					various reflective surfaces on  
					objects or clothing as well as  
					external noise sources may cause  
					the system to fail to detect  
					obstacles.  
					Special attention has to be paid to  
					low obstacles which can damage  
					the lower part of the bumper. If  
					such obstacles leave the detection  
					area of the sensors during  
					approach of the vehicle, a  
					continuous warning tone will  
					sound.  
					Deactivation  
					Objects with a very small reflection  
					Deactivate the system by pressing  
					cross-section, e.g. objects of  
					r.  
					narrow size or soft materials, may  
					not be detected by the system.  
					The LED in the button will go out and  
					Park Assist Off will be displayed in the  
					Driver Information Centre.  
					The system is deactivated  
					automatically at a certain speed.  
					Parking assist systems do not  
					detect objects outside the  
					detection range.  
					Notice  
					Fault  
					The parking assist system  
					automatically detects factory-fitted  
					towing equipment. It is deactivated  
					when the connector is plugged in.  
					In the event of a fault in the system, a  
					vehicle message is displayed in the  
					Driver Information Centre.  
					Additionally, a vehicle message is  
					displayed in the Driver Information  
					Centre if a malfunction of the system  
					due to temporary conditions, e.g.  
					snow covered sensors is detected.  
					The sensor may detect a non-  
					existent object (echo disturbance)  
					caused by external acoustic or  
					mechanical disturbances.  
					Caution  
					Performance of the system can be  
					reduced when sensors are  
					covered, e.g. by ice or snow.  
					Performance of the parking assist  
					system can be reduced due to  
					heavy loading.  
					Notice  
					Vehicle messages 3 102.  
					The parking assist is deactivated  
					when the rear carrier system is  
					extended.