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  • Van
  • 06/2022
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Function of tyre pressure monitor on single tyres

The system checks the tyre pressure and the temperature of the tyres fitted to the vehicle by means of a tyre pressure sensor.

New tyre pressure sensors, e.g. in winter tyres, are automatically taught-in during the first journey they are used.

Crewbuses with a GVWR of 3.0 t and 3.5 t: when changing from 245/65 R17XL tyres to one of the other approved tyre sizes and vice versa, the permissible pressure range of the tyre pressure monitor must be recoded. Contact a qualified Mercedes-Benz specialist workshop for this purpose.

The tyre pressure and the tyre temperature appear in the display of the instrument cluster More.

If there is a substantial loss of tyre pressure, a warning is issued:

It is the driver's responsibility to set the tyre pressure to the recommended cold tyre pressure suitable for the operating situation. Set the tyre pressure for cold tyres using a tyre pressure gauge. Note that the correct tyre pressure for the current operating situation must first be taught-in to the tyre pressure monitoring system.

In most cases, the tyre pressure monitoring system will automatically update the new reference values after you have changed the tyre pressure. You can, however, also update the reference values by restarting the tyre pressure monitoring system manually More.

System limits
The system may be impaired or may not function in the following situations:
  • if the tyre pressure has been set incorrectly

  • if there is a sudden pressure loss caused, for example, by a foreign object penetrating the tyre

  • if there is a malfunction caused by another radio signal source

  • if there is a change of tyre sizes

Bear in mind the following related topic:
  • Notes on tyre pressure More