Subaru 2009 Tribeca User Manual download pdf (Page 348)

11-24 Maintenance and service

replace all four tires.

! Winter (snow) tires

Winter tires are best suited for driving on

snow-covered and icy roads. However

winter tires do not perform as well as

summer tires and all season tires on roads

other than snow-covered and icy roads.

& Tire pressure monitoring

system (TPMS)

The tire pressure monitoring system pro-

vides the driver with a warning message

by sending a signal from a sensor that is

installed in each wheel when tire pressure

is severely low. The tire pressure monitor-

ing system will activate only when the

vehicle is driven. Also, this system may

not react immediately to a sudden drop in

tire pressure (f or example, a blow-out

caused by running over a sharp object).

If you adjust the tire pressures in a warm

garage and will then drive the vehicle in

cold outside air, the resulting drop in tire

pressures may cause the low tire pressure

warning light to illuminate. To avoid this

problem when adjusting the tire pressures

in a warm garage, inflate the tires to

pressures higher than those shown on the

tire placard. Specifically, inflate them by an

extra 1 psi (6.9 kPa, 0.07 kgf/cm

2

) for

every difference of 108F (5.68C) between

the temperature in the garage and the

temperature outside. By way of example,

the following table shows the required tire

pressures that correspond to various out-

side temperatures when the temperature

in the garage is 60 8 F (15.68C).

Standard tire pressures:

Front: 33 psi (230 kPa, 2.3 kgf/cm

2

)

Rear: 32 psi (220 kPa, 2.2 kgf/cm

2

)

Garage temperature: 608F (15.68C)

Outside

temperature

Adjusted pressure

[psi (kPa, kgf/cm

2

)]

front

rear

308F(−18C)

36 (250, 2.5) 35 (240, 2.4)

108F(−128C)

38

(265, 2.65)

37

(255, 2.55)

−108F

(−238C)

40 (280, 2.8)

39 (270, 2.7)

If the low tire pressure warning light

illuminates when you drive the vehicle in

cold outside air after adjusting the tire

pressures in a warm garage, re-adjust the

tire pressures using the method described

above. Then, increase the vehicle speed

to at least 20 mph (32 km/h) and check to

see that the low tire pressure warning light

turns off a few minutes later. If the low tire

pressure warning light does not turn off,

the tire pressure monitoring system may

not be functioning normally. In this event,

go to a SUBARU dealer to have the

system inspected as soon as possible.

While the vehicle is driven, friction be-

tween tires and the road surface causes

the tires to warm up. After illumination of

the low tire pressure warning light, any

increase in the tire pressures caused by

an increase in the outside air temperature

or by an increase in the temperature in the

tires can cau se the low tire pressure

warning light to turn off.

System resetting is necessary when the

wheels are changed (for example, a

switch to snow tires) and new TP MS

valves are installed on the newly fitted

wheels. Have this work performed by a

SUBARU dealer following wheel replace-

ment.

It may not be possible to install TPMS

valves on certain wheels that are on the

market. Therefore, if you change the

wheels (for example, a switch to snow

tires), use wheels that have the same part

number as the standard-equipment

wheels. Without four operational TPMS

valve/sensors on the wheels, the TPMS

will not fully function and the warning light

in the instrument panel will illuminate

steadily after blinking for approximately

one minute.

1 2 ... 343 344 345 346 347 348 349 350 351 352 353 ... 410 411

Comments to this Manuals

No comments