2004 Mercedes SL-Class Owner's Manual - Page 322

Practical hints What to do if ... Left display Right display Reactivate tire press. monit. Tire press. monitor currently inactive Possible cause The tire inflation pressure monitor* is deactivated. The tire inflation pressure monitor* is temporarily unable to monitor the tire pressure due to: the presence of several wheel sensors in the vehicle excessive wheel sensor temperatures a nearby radio interference source unrecognized wheel sensors mounted Possible solution Activate the tire inflation pressure monitor* ( page 266). Remove any additional wheel sensors from the vehicle, e.g. when transporting a new set of tires. As soon as the causes of the malfunction have been removed, the tire pressure monitor automatically becomes active again. H Warning! 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. 321