2010 BMW M5 Owner's Manual - Page 86

Technology for comfort, convenience and safety The last selected program is active each time the engine is started. You can also activate your preferred program with the button on the steering wheel, refer to MDrive on page 52. after this activation phase. When driving with snow chains, the system is not initialized.< With Sequential Manual Transmission via the button in the center console: 1. Start the engine, but do not start driving. 2. Press the button for approx. 5 seconds. After the button is released, the warning lamp lights up in yellow for several seconds in the instrument cluster, refer to Indication of a flat tire. The message "Initializing FTM" appears on the Control Display for a few seconds. FTM Flat Tire Monitor* The concept The Flat Tire Monitor detects a pressure loss in one tire by comparing the speeds of the individual wheels during driving. In the event of a pressure loss, there is a change in the rolling circumference and therefore the rotation speed of the corresponding wheel. The system detects this change and reports it as a flat tire. Functional requirement In order to ensure that a flat tire is reported correctly, the system must be initialized while the tires have the correct inflation pressure. The initialization must be repeated after each time the tire inflation pressure is corrected and after every tire or wheel change.< 3. Start to drive. The initialization finishes during driving without feedback. Via iDrive, for operating principle refer to page 16: 1. Press the button. This opens the start menu. 2. Press the controller to open the menu. System limits The Flat Tire Monitor cannot indicate sudden severe tire damage caused by outside factors and does not detect a natural, even pressure drop in all four tires. In the following situations, the system could be delayed or malfunction: > System has not been initialized > Driving on snowy or slippery road surface > Sporty driving style: slip in the drive wheels, high lateral acceleration > Driving with snow chains* Initializing system The initialization finishes during driving, which can be interrupted at any time. When driving resumes, the initialization is continued automatically. The system is initialized 84 3. Turn the controller until "Settings" is selected and press the controller. 4. Select "Vehicle / Tires" and press the controller. Online Edition for Part no. 01 41 2 600 738 - © 08/08 BMW AG