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Driver assist systems
WARNING! Driving with soft tyres may lead to a longer braking
distance, unstable brake behaviour and unstable vehicle behaviour.
Also, the tyre wear and the fuel consumption are increased. Ignoring
these matters can lead to very dangerous situations not only for the
driver but also for other road users. It can also lead to damage to the
vehicle.
– TPI does not release the driver from the need to regularly inspect
the tyre pressure.
Unfavourable conditions can have a negative influence on the TPI function. For
example:
– TPI cannot alert the driver to severe and sudden tyre damage caused by external
factors.
– TPI will not identify the natural, even loss of pressure in all tyres.
– Under certain circumstances, an unjustified or delayed TPI warning may be
activated when driving on snow-covered or slippery road surfaces.
– Excessive wheel slip can lead to a delayed TPI warning.
– If TPI is not (correctly) calibrated, an unjustified or delayed TPI warning may be
activated.
– The tyre chains are being used, or the vehicle is being driven on a rough or frozen
road.
– Two low-pressure tyres were on the same axle.
TPI warning symbol in master display
In case of an active TPI warning:
1. Select 'Vehicle info' in the main overview of the master display, using the 'Menu
Control Switch'.
2. Select 'Tyre pressure'.
On this screen, the question is asked if a reset of the TPI is required.
3. Visually check all tyres, especially the tyre indicated as below normal pressure.
4. Adjust the tyre pressure of all tyres to the correct value. See section 'Tyres' in
chapter 'Technical data and identification'.
5. Select 'Yes'to initiate the TPI reset.
NOTE: If 'No' is selected a new question screen automatically pops up
asking if calibration of the TPI is required. See TPI calibration.
6. Drive for at least 5 kilometres to deactivate an active TPI warning.
NOTE: The driving distance required to deactivate the TPI warning
depends on the road conditions (bends) and driving conditions (braking).
TPI calibration
After changing a tyre, wheel or the tyre pressure, the difference between the diameters
of the various tyres on the vehicle may have become too large (for example, as a result
of differences in tread depth and/or tyre pressure).
DW63246305.book Page 273 Friday, March 22, 2019 4:54 PM
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