2008 Mercedes CL-Class Owner's Manual - Page 577

Operation Tires and wheels Press #. The message "Tire Pressure Monitor Reactivated" appears in the multifunction display. After a few minutes driving, the current tire inflation pressure values are accepted as reference values and then monitored. If you wish to cancel activation: Press L. or Press $ to exit menu screen. Potential problems associated with underinflated and overinflated tires Underinflated tires Underinflated tires can: cause excessive and uneven tire wear adversely affect fuel economy lead to tire failure from being overheated adversely affect handling characteristics Warning! Follow recommended tire inflation pressures. Do not underinflate tires. Underinflated tires wear excessively and/or unevenly, adversely affect handling and fuel economy, and are more likely to fail from being overheated. Overinflated tires Overinflated tires can: adversely affect handling characteristics cause uneven tire wear be more prone to damage from road hazards adversely affect ride comfort increase stopping distance Warning! G G Follow recommended tire inflation pressures. Do not overinflate tires. Overinflated tires can adversely affect handling and ride comfort, wear unevenly, increase stopping distance, and result in sudden deflation (blowout) because they are more likely to become punctured or damaged by road debris, potholes etc. i When the wheel positions are changed on the vehicle, it is possible that the air pressure is temporarily displayed for the wrong position. This will be corrected after driving for several minutes, and the air pressure will be shown for the correct position. 576