2008 Mercedes SL-Class Owner's Manual - Page 376

Practical hints What to do if ... Left display Tire Pressure Monitor Wheel Sensor Missing Right display Possible cause/consequence Vehicles with Advanced TPMS*: One or more wheels without appropriate wheel sensors mounted (e.g. spare wheel). The respective tire is indicated by --- instead of the tire inflation pressure in the multifunction display. Possible solution Have the Advanced TPMS* checked by an authorized Mercedes-Benz Center. Have appropriate wheel sensors installed by an authorized Mercedes-Benz Center. Tire Pressure Monitor Currently Unavailable The TPMS or Advanced TPMS* is unable to monitor the tire pressure due to a nearby radio interference source. As soon as the causes for the malfunction are no longer present, the TPMS or Advanced TPMS* automatically becomes active again after a few minutes driving. 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. Warning! G Warning! Follow recommended tire inflation pressures. G Do not drive with a flat tire. A flat tire affects the ability to steer or brake the vehicle. You may lose control of the vehicle. Continued driving with a flat tire will cause excessive heat build-up and possibly a fire. 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. 375