2004 Mercedes CL-Class Owner's Manual - Page 274

Operation Tires and wheels Checking tire pressure electronically* (vehicles produced up to approximately October 2003) i Possible differences between the readings of a tire pressure gauge of an air hose, e.g. gas station equipment, and the vehicle's control system can occur. The readings issued by the control system are more precise. Switch on ignition. Press button è or ÿ on the multifunction steering wheel repeatedly until the standard display menu appears in the multifunction display ( page 129). Press button k or j repeatedly until you see the current inflation pressures for each tire appear in the display. Warning! G i Check with an authorized Mercedes-Benz Center to determine the equipment installed in your vehicle. The tire inflation pressure monitor only functions on wheels that are equipped with the proper electronic sensors. It monitors the tire inflation pressure, as selected by the driver, in all four tires. A warning is issued to alert you to a decrease in pressure in one or more of the tires. Tire pressure inquiries are made using the multifunction display ( page 129). The inflation pressures are displayed only after a few minutes travel time. You can select the unit of measure used for the tire inflation pressure by changing the setting in the control system ( page 129). The tire inflation pressure monitor does not indicate a warning for wrongly selected inflation pressures. Always adjust tire inflation pressure according to the label on the fuel filler flap. The tire inflation pressure monitor is not able to issue a warning due to a sudden dramatic loss of pressure (e.g. tire blowout caused by a foreign object). In this case bring the vehicle to a halt by carefully applying the brakes and avoiding abrupt steering maneuvers. i Operating radio transmission equipment (e.g. wireless headsets, two-way radios) in or near the vehicle could cause the tire inflation pressure monitor to malfunction. 273