2007 Mercedes GL-Class Owner's Manual - Page 402

Operation Tires and wheels Reactivating the TPMS Warning! TPMS malfunctions may occur for a variety of reasons, including the installation of incompatible replacement or alternate tires or wheels on the vehicle that prevent the TPMS from functioning properly. Always check the TPMS malfunction telltale after replacing one or more tires or wheels on your vehicle to ensure that the replacement or alternate tires and wheels allow the TPMS to continue to function properly. i Reactivate the TPMS after adjusting the tire G It is the driver's responsibility to calibrate the TPMS on the recommended cold inflation pressure. Underinflated tires affect the ability to steer or brake the vehicle. You might lose control over the vehicle. i If a condition causing the TPMS to malfunction develops, it may take up to 10 minutes for the system to signal a malfunction using the TPMS telltale flashing and illumination sequence. The telltale extinguishes after a few minutes driving if the malfunction has been corrected. The TPMS must be reactivated when you have adjusted the tire inflation pressure to a new level (e.g. because of different load or driving conditions). The TPMS is then recalibrated to the current tire inflation pressures. Using the Tire and Loading Information placard on the driver's door B-pillar ( page 389) or, if available, the supplemental tire inflation pressure information on the inside of the fuel filler flap ( page 375), make sure the tire inflation pressure of all four tires is correct. inflation pressure to the inflation pressure recommended for the vehicle operating condition. Tire pressure should only be adjusted on cold tires. Observe the recommended tire inflation pressure on the Tire and Loading Information placard on the driver's door B-pillar ( page 389). Some vehicles may have supplemental tire inflation pressure information for driving at high speeds ( page 395) or for vehicle loads less than the maximum loaded vehicle condition ( page 395). If such information is provided, it can be found on the inside of the fuel filler flap. Press button è or ÿ on the multifunction steering wheel repeatedly until the standard display menu appears in the multifunction display ( page 157). Press the j or k button repeatedly until you see the following message: Tire pressure monitor active Menu: R-Button i Operating radio transmission equipment (e.g. wireless headsets, two-way radios) in or near the vehicle could cause the TPMS to malfunction. 401