CL 550 4MATIC (216.386) V8-5.5L (273.961) (2009)
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While driving, the system now compares the existing tire pressure in each wheel with the stored values every 3 or 4 seconds. If a difference is
measured, the driver is informed immediately via the multifunction display (A1p13) in the instrument cluster (A1).
The tire pressure loss warning (RDW) itself takes place without the position of the affected tire being given and is only active from a speed of 15
km/h. In the Electronic Stability Program system (Electronic Stability Program) or Sensotronic Brake Control a highly accurate evaluation of the
wheel speeds transmitted by the rpm sensors (L6/1 to L6/4) takes place with a moderate driving style. If a speed difference is now measured, this
means that a tire has a pressure loss. The error message is lead directly to the instrument cluster (A1) and is displayed to the driver in the form of an
information message in the multifunction display (A1p13).
For each check or adaptation of tire pressure as well as for each wheel or tire change the tire pressure loss warning (RDW) system must be restarted
(see operator's manual).