Rectifying Low Tyre Pressure With Tyre Pressure Monitoring - Volvo XC 90 Owner's Manual

WHEELS AND TYRES
Rectifying low tyre pressure with
tyre pressure monitoring
When the tyre pressure monitoring system, Tyre
Pressure Monitoring System (TPMS), gives a
warning, the tyre pressure in one or more of the
car's tyres is too low.
Check and rectify the tyre pressure
when the indicator symbol for TPMS is
illuminated and the message
pressure low or
is shown.
1. Check the tyre pressure as indicated on the
tyres with a tyre pressure gauge.
Standard in certain markets.
14
454
2. Inflate the tyres to the correct pressure as
14 indicated on the tyre pressure label on the
door pillar on the driver's side.
Tyre
Tyre needs air now
3. In some cases it may be necessary to drive
the car for a few minutes at a speed above
30 km/h in order to clear the TPMS symbol
and message.
NOTE
•
The TPMS system uses a so-called com-
pensated pressure value, based on both
tyre temperature and ambient tempera-
ture. This means that the tyre pressure
may differ slightly from the recommended
pressures listed on the tyre pressure
label on the driver's side door pillar
(between front and rear doors). It may
therefore be necessary to pump hot tyres
to approx. 0.3 bar, alternatively 30kPa,
above the recommended tyre pressure to
get rid of a low tyre pressure message.
•
To avoid incorrect tyre pressure, the pres-
sure should be checked on cold tyres.
"Cold tyres" means the tyres are the
same temperature as the ambient tem-
perature (approx. 3 hours after the car
has been driven). After a few kilometres
of driving, the tyres warm up and the
pressure increases.
NOTE
•
After a tyre has been inflated, always refit
the dust cap in order to avoid damage to
the valve from gravel, dirt, etc.
•
Only use plastic dust caps. Metal dust
caps can rust and become difficult to
unscrew.