Tyre Deflation Detection System - Fiat DOBLO Owner's Handbook Manual

The tyre pressure tables show all
possible tyre combinations 3 272.
For the tyres approved for your vehicle,
refer to the EEC Certificate of Conformity
provided with your vehicle or other
national registration documents.
The driver is responsible for correct
adjustment of tyre pressure.
9
WARNING
If the pressure is too low, this can result in
considerable tyre warm-up and internal
damage, leading to tread separation and
even to tyre blow-out at high speeds.
9
WARNING
For specific tyres the recommended tyre
pressure as shown in the tyre pressure
table may exceed the maximum tyre
pressure as indicated on the tyre. Never
exceed the maximum tyre pressure as
indicated on the tyre.
Temperature dependency
The tyre pressure depends on the
temperature of the tyre. During driving,
tyre temperature and pressure increase.
Tyre pressure values provided on the tyre
pressure information label and tyre
pressure chart are valid for cold tyres,
which means at 20 °C.
236
The pressure increases by nearly
10 kPa / 1.5 psi for a 10 °C temperature
increase. This must be considered when
warm tyres are checked.

Tyre deflation detection system

The tyre deflation detection system
continually checks the rotation speed of
all four wheels and warns on low tyre
pressure condition once vehicle is
driving. This is achieved by comparing
tyre rolling circumference with reference
values and further signals.
If a tyre loses pressure the control
indicator w illuminates, a warning chime
is given and a warning message is
displayed in the Driver Information
Centre.
In this case reduce speed, avoid sharp
cornering and strong braking. Stop at
next safe opportunity and check tyre
pressure.
Control indicator w 3 79.
After adjusting tyre pressure initialise
system to extinguish the control indicator
and restart system.
CAUTION
Deflation detection system warns just
about low tyre pressure condition and
does not replace regular tyre maintenance
by the driver.
In case of a system malfunction a
message is displayed in the Driver
Information Centre. Set correct tyre
pressure and reinitialise system. If the
failure continues to be displayed, contact
a workshop. The system is inoperable
when ABS or ESC has a malfunction or
a temporary spare wheel is used. Once
the road tyre has been refitted, check the
tyre pressure with cold tyres and initialise
the system.
System initialisation
After tyre pressure correction or wheel
change, the system must be initialised to
learn new circumference reference
values:
1. Always ensure that all four tyres have
correct tyre pressure 3 272.
2. Apply parking brake.