2009 BMW 5 Series Owner's Manual - Page 99

TPM Tire Pressure Monitor* The concept TPM checks the tire inflation pressure in the four mounted tires. The system reports when the tire inflation pressure has dropped considerably in one or several tires. One wheel is yellow Flat tire or a major drop in inflation pressure in the indicated tire. A message appears on the Control Display. All wheels are yellow Controls Reference Mobility 97 Communications Entertainment Navigation Driving tips Flat tire or a major drop in inflation pressure in several tires. A message appears on the Control Display. Functional requirement In order to assure the reliable reporting of a flat tire, the system must be reset at the correct tire inflation pressure. Always use wheels with TPM electronics, otherwise fault-free operation of the system is not ensured. Reset the system again after each correction of the tire inflation pressure and after every tire or wheel change.< Gray The system cannot detect a flat tire. Reasons for this can be: > TPM is being reset > Temporary interference due to systems or devices which use the same radio frequency > Malfunction System limits TPM cannot announce sudden serious tire damage caused by external influences. The system does not function properly if it has not been reset, e.g. a flat tire is reported despite correct tire inflation pressures. The system is inactive and cannot display a flat tire if a wheel has been mounted without TPM electronics, e.g. a compact wheel, or if TPM is temporarily interfered with by other systems or devices which use the same radio frequency. Resetting system Reset the system again after each correction of the tire inflation pressure and after every tire or wheel change.< Resetting finishes during driving, which can be interrupted at any time. When driving resumes, resetting is continued automatically. Do not reset the system when driving with a compact wheel*. 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. 3. Select "Settings" and press the controller. 4. Select "Vehicle / Tires" and press the controller. Status display on Control Display The tire and system status is indicated by the color of the tires. TPM takes the fact that the tire pressure changes during driving into account. A correction is only required if requested by TPM with the color. Green The tire pressure matches the learned set state. "TPM active" appears on the Control Display. Online Edition for Part no. 01 41 2 600 721 - © 08/08 BMW AG At a glance