2003 Mercedes SL-Class Owner's Manual - Page 237

Operation Tires and wheels Activating the tire inflation pressure monitor You must activate the tire inflation pressure monitor in the following cases: if you have changed the tire pressure if you have replaced the wheels or tires if you have installed new wheels or tires Be sure that the tire pressure is correctly set. Press the k button until the inflation pressure of each tire appears in the right display field. Warning! Follow recommend tire pressures. G i If transporting a deflated road wheel or additional wheel sensors in the vehicle, the tire inflation pressure monitor should not be reactivated until the deflated wheel or additional wheel sensors have been removed from the vehicle. Otherwise, the deflated wheel or additional sensors could confuse the tire inflation pressure monitor system and cause it to malfunction. Press the reset knob ( page 21). The following message will appear in the speedometer display field: Monitor current tire pressure? Do not overinflate tires. Overinflating tires can result in sudden deflation (blowout) because they are more likely to become punctured or damaged by road debris, potholes etc. Do not underinflate tires. Underinflated tires wear unevenly, adversely affect handling and fuel economy, and are more likely to fail from being overheated. Do not overload the tires by exceeding the specified vehicle capacity weight (as indicated by the label on the pillar in the driver's door opening). Overloading the tires can overheat them, possibly causing a blowout. Press æ button. The following message will appear in the speedometer display field: Tire pressure monitor activated! Pressure display after driving several mins. 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. 237