Volvo 2009 XC90 Owner's Manual download pdf (Page 179)

07 Wheels and tyres

07

178

* Option/accessory, for more information, see Introduction.

General*

Tyre pressure monitoring, TPMS (Tyre Pres-

sure Monitoring System) warns the driver when

the pressure is too low in one or more of the

car's tyres. It uses sensors located inside the

air valve in each wheel. When the car is driven

at about 40 km/h the system detects the tyre

pressure. If the pressure is too low then a warn-

ing lamp on the instrument panel illuminates

and a message is shown on the display.

Always check the system after changing a

wheel in order to ensure that replacement

wheels work with the system.

For information on correct tyre pressures, see

page 171 and see page 172.

The TPMS system does not replace normal

tyre maintenance.

IMPORTANT

If a fault should arise in the tyre pressure

system a warning lamp on the instrument

panel will illuminate. The message

TYRE

PRESS. SYST SERVICE REQUIRED

will

be shown. This can be for various reasons,

e.g. fitting a wheel not equipped with a sen-

sor adapted for Volvo's tyre pressure moni-

toring system.

Adjusting tyre pressure monitoring

Tyre pressure monitoring can be adjusted in

order to follow Volvo's tyre pressure recom-

mendations, when driving with a heavy load for

example.

NOTE

The engine must not be running.

1. Inflate the tyres to the required pressure.

2.

Select key position I or II.

3. Turn the thumbwheel on the left-hand stalk

switch until the text TYRE PRESSURE

CALIBRATION

is shown on the display.

4.

Press and hold the RESET button until the

text TYRE PRESSURE CALIBRATED is

shown.

Rectifying low tyre pressure

When the message LOW TYRE PRESS.

CHECK TYRES

is shown on the display:

1. Check the tyre pressure in all four tyres.

2. Inflate the tyre(s) to the correct pressure.

3. Drive the car for at least 1 minute in total at

a minimum of 40 km/h and check that the

message disappears.

Deactivating tyre pressure monitoring

NOTE

The engine must not be running.

1.

Key position I or II.

2. Turn the thumbwheel on the left-hand stalk

switch until the text

TYRE PRESS. SYST

ON

is shown on the display.

3.

Press and hold the RESET button until the

text TYRE PRESS. SYST OFF is shown.

To reactivate the system repeat the same steps

1-3, so that TYRE PRESS. SYST ON is shown

on the display.

Recommendations

Only factory fitted wheels are equipped with

TPMS sensors in the valves.

•

The temporary spare wheel does not have

this sensor.

•

If wheels without TPMS sensors are used

then TYRE PRESS SYST SERVICE

REQUIRED

will be shown every time the

car is driven faster than 40 km/h for more

than 10 minutes.

Tyre pressure monitoring

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