air suspension VOLVO XC90 2009 Owner´s Manual

06 Starting and drivingTowing a trailer
06152
NOTE
•
Recommended hitch tongue load:
not more than 10% of the trailer's
weight. The trailer load should be posi-
tioned so that it does not shift and the
tongue load should be 10% of the trail-
er's weight. However, the tongue load
should not exceed the maximum per-
missible weights indicated in the table
above.
•
When towing trailers without brakes,
the maximum permissible trailer weight
is 1,700 lbs (750 kg).
•
If necessary, redistribute the weight of
any cargo in the trailer to avoid exces-
sive weight on the trailer hitch.
•
The maximum trailer weight listed in the
table for All Wheel Drive models,
5,000 lbs (2250 kg) is only applicable
when there are not more than two occu-
pants in the vehicle, in the front seats,
with a combined weight of 300 lbs
(135 kg), with no other cargo in the vehi-
cle.
•
The maximum weight listed for Front
Wheel Drive models, 4,000 lbs (1800 kg)
is only applicable when there are not
more than four occupants in the vehicle,
in the front seats and second row of
seats, with a combined weight of
600 lbs (270 kg), with no other cargo in
the vehicle.
NOTE
•
Vehicles used for towing a trailer on a
regular basis, or for long-distance high-
way towing should be equipped with an
automatic transmission oil cooler and
Volvo's automatic self-leveling system
for the rear suspension. Consult your
Volvo retailer.
•
Volvo recommends the use of Volvo
trailer hitches that are specially
designed for the vehicle.
•
All Volvo models are equipped with
energy-absorbing shock-mounted
bumpers. Trailer hitch installation
should not interfere with the proper
operation of this bumper system.
•
Increase tire pressure to recommended
full inflation pressure. See chapter
"Wheels and tires."
•
When your vehicle is new, avoid towing
heavy trailers during the first 620 miles
(1,000 km).
•
Engine and transmission are subject to
increased loads. Therefore, engine
coolant temperature should be closely
watched when driving in hot climates or
hilly terrain. Use a lower gear and turn
off the air conditioner if the temperature
gauge needle enters the red range.

07 Wheels and tires
Tire rotation
07
179
G020325
The arrows shows the direction of rotation of the
tireSummer and winter tires•
When switching between summer and
winter tires, mark the tires to indicate
where they were mounted on the car, e.g.,
LF = left front, RR = right rear
•
Tires with tread designed to roll in only one
direction are marked with an arrow on the
sidewall.
•
Incorrectly mounted tires impair the car's
braking properties and ability to force
aside rain, snow and slush.
•
The tires with the most tread should always
be at the rear (to reduce the risk of skid-
ding).
•
Contact a Volvo workshop if you are
unsure about the tread depth.
Tire rotationYour vehicle has no recommended tire rota-
tion. The following information is intended to
help you understand why.Tread setAs a tire ages and the rubber cures, front and
rear tires set at different angles. Therefore, if
tires are rotated, the tread will eventually set at
an angle that is a compromise. Even if ride,
handling, and road noise may still seem
acceptable, they may not be optimal. Further,
tires that are rotated, but not on a regular basis,
may actually cause more tire noise, faster tire
wear, and unpleasant changes in steering feel
and vehicle handling.
A tire that can fully adapt to its position will
provide better steering feel, lower tire noise,
and better fuel economy.Braking stability performanceYour vehicle is driven mainly by the front tires,
which will wear faster. This can be beneficial.
Having more tread on the rear tires will help
reduce oversteer. Oversteer is when a vehicle
wants to keep turning because of momentum
and dynamic forces on its suspension.Suspension wear diagnosticsEvery suspension needs periodic inspection
and maintenance. A tire's wear pattern can bean aid in detecting a suspension problem. Each
tire, if left in place, tells a story about the sus-
pension. Tire rotation, on the other hand, could
make suspension wear harder to detect. Early
detection is very important, because suspen-
sion problems can make tire wear worse.
If you do rotate your tires...Please follow the tire manufacturer's recom-
mendations, as outlined in the tire manufactur-
ers tire warranty pamphlet.
Your Volvo retailer can also provide guidance
based on your particular driving circumstan-
ces.

12 Index
12
275
Child restraints
recalls and registration......................... 46
Child safety................................................ 33
Child safety locks....................................124
Climate system.......................................... 90
refrigerant............................................. 90
Clock reset button..................................... 54
Coat hanger............................................. 111
Cold weather precautions........................ 157
Compact disc care
CD care............................................... 251
Convertible seats....................................... 39
Coolant.................................................... 211
changing............................................. 206
Courtesy light........................................... 106
Cup holder
rear seat.............................................. 110
Curb weight............................................. 175
Current fuel consumption.......................... 71
DDefroster
rear window and door mirrors.............. 70
rear window and mirrors....................... 95
windshield............................................. 94
Detachable trailer hitch............................ 155
Dimensions.............................................. 260
Disabling the passenger's side front air-
bag............................................................. 25
Display, instrument panel.......................... 54
Dolby Pro Logic II (DPL II)........................ 239
Door mirrors............................................... 81
defroster............................................... 70
Door mirrors, folding.................................. 60
Driving conditions, difficult......................137
Driving economically................................ 136
Driving through water..............................137EEconomical driving..................................136
Electrically operated moonroof.................. 83
Electrical system...................................... 270Emission inspection readiness................ 203
Engine
specifications...................................... 269
starting................................................ 133
Engine oil................................................. 208
specifications...................................... 268
FFederal Clean Air Act............................... 202
Flat tires
changing............................................. 180
repairing with tire sealing system....... 185
Fog light..................................................... 56
Fog lights
front*.....................................................64
Folding door mirrors.................................. 60
Front airbags.................................. 21, 22, 25
Front seat
folding backrest.................................. 100
manually adjusted............................... 100
Front seats
power.................................................. 100
Front suspension..................................... 267

12 Index
12
277
Low beam headlight.................................. 66MMaintenance............................................ 202
Maintenance, periodic............................. 203
Malfunction indicator light......................... 57
Mirrors
door, folding......................................... 60
power door........................................... 81
rearview, auto-dim function.................. 80
Moonroof................................................... 83
MP3 player, connecting........................... 248
Multifilter with air quality sensor................ 93OOBD II...................................................... 203
Occupant safety........................................ 16
Oil quality................................................. 208
Onboard Diagnostic System (OBD II)...... 203
On Call Roadside Assistance.................. 273
Owner maintenance................................. 203
PPaint - color code....................................198
Panel lighting, instrument.......................... 64
Park assist.......................................147, 148
Parking brake............................................. 76
warning symbol.................................... 56
Parking lights............................................. 63
Passenger’s side front airbag, disabling. . . 25
Periodic owner-performed maintenance. 203
Permissible axle weight........................... 175
Polishing.................................................. 195
Power moonroof........................................ 83
Power seat............................................... 100
Power steering fluid................................. 212RRadiator................................................... 207
Radio functions........................................ 239
Rain sensor - windshield wipers................ 69
Rear seat entertainment (option)............. 253
Rear suspension...................................... 267Rearview mirror with compass (option)..... 80
Rear window defroster.............................. 70
Recalls, child restraints.............................. 46
Recirculation.............................................. 94
REDUCE SPEED........................................ 58
Refrigerant (A/C system)............................ 90
Registering child restraints........................ 46
Remote control........................................ 119
replacing the battery........................... 121
Reporting safety defects
Canada................................................. 17
USA....................................................... 16
Rotating tires........................................... 179
SSafety defects, reporting
Canada................................................. 17
USA....................................................... 16
Safety locks, child.................................... 124
Seat belt..................................................... 18
Seats........................................................ 100
Service.....................................................202
Service key.............................................. 118