2008 Mercedes CL-Class Owner's Manual - Page 470

Controls in detail Driving systems The Park Assist system deactivates at speeds over approximately 10 mph (16 km/h). At lower speeds the Parktronic system turns on again. Park Assist is also switched off when you set the automatic transmission to park position P or switch off the engine. While the transmission is in neutral position N, Park Assist is switched off if you secure the vehicle in place with the electronic. The Park Assist system monitors the surroundings of your vehicle with four sensors in the front bumper and two sensors in the rear bumper. Range of the sensors The sensors of the Park Assist system are integrated in the front and rear bumpers. Make sure that the bumpers are clear of dirt, ice and slush in the area of the sensors, as otherwise, Park Assist may not function properly, see "Cleaning the driving systems sensors" ( page 601). i Due to the sensors' broad detection range, it is possible that Park Assist also detects the following obstacles and issues a warning: obstacles in the ground, e.g. sewer canal covers, rails, bumps in the road or gutters obstacles moving upward quickly, e.g. rolling garage doors Front sensors Center Corners Rear sensors Center Corners approx. 50 in (125 cm) approx. 24 in (60 cm) approx. 40 in (100 cm) approx. 24 in (60 cm) ! While parking, pay particular attention to objects over or underneath the sensors, e.g. flower boxes, an elevated crossbar or a trailer tow hitch. Park Assist does not detect such nearby objects. You could otherwise damage the vehicle or the objects. 469