2009 VOLVO XC90 check engine light

06 Starting and driving
Towing a trailer
06``153
NOTE
•
If the automatic transmission begins to
overheat, a message will be displayed
in the text window.
•
Hauling a trailer affects handling, dura-
bility, and economy.
•
It is necessary to balance trailer brakes
with the towing vehicle brakes to pro-
vide a safe stop (check and observe
state/local regulations).
•
Do not connect the trailer's brake sys-
tem directly to the vehicle's brake sys-
tem.
•
Remove the ball and drawbar assembly
when the hitch is not being used.
•
Volvo recommends the use of synthetic
engine oil when towing a trailer over
long distances or in mountainous areas.
NOTE
•
When parking the vehicle with a trailer
on a hill, apply the parking brake before
putting the gear selector in P. When
starting on a hill, put the gear selector in
D before releasing the parking brake.
Always follow the trailer manufacturer's
recommendations for wheel chocking.
•
If you use the manual (Geartronic) shift
positions while towing a trailer, make
sure the gear you select does not put
too much strain on the engine (using too
high a gear).
WARNING
•
Bumper-attached trailer hitches must
not be used on Volvos, nor should
safety chains be attached to the
bumper.
•
Trailer hitches attaching to the vehicle
rear axle must not be used.
•
Never connect a trailer's hydraulic
brake system directly to the vehicle
brake system, nor a trailer's lighting
system directly to the vehicle lighting
system. Consult a trained and qualified
Volvo service technician for correct
installation.
•
When towing a trailer, the trailer's safety
wire must be correctly fastened to the
hole or hook provided in the trailer hitch
on the vehicle. The safety wire should
never be fastened to or wound around
the drawbar ball.
Smoother starts with a trailerModels equipped with the V8-engine and the
6-speed automatic transmission have a built-
in function that reduces acceleration slightly in
first gear when the vehicle is towing a trailer.
This is done to help avoid wheel spin and to
make starting off smoother.•
This function is activated when the trailer's
electrical connector is plugged into the

06 Starting and driving
Cold weather precautions
06
157
If you wish to check your vehicle before the
approach of cold weather, the following advice
is worth noting:•
Make sure that the engine coolant contains
50 percent antifreeze. Any other mixture
will reduce freeze protection. This gives
protection against freezing down to –31 °F
(–35 °C). See section "Coolant".
•
The use of "recycled" antifreeze is not
approved by Volvo. Different types of
antifreeze must not be mixed.
•
Volvo recommends using only genuine
Volvo antifreeze in your vehicle's radiator.
Your Volvo retailer stocks plenty of Volvo
engine coolant to protect your vehicle dur-
ing cold weather.
•
Try to keep the fuel tank well filled – this
prevents the formation of condensation in
the tank. In addition, in extremely cold
weather conditions it is worthwhile to add
fuel line de-icer before refueling.
•
The viscosity of the engine oil is important.
Oil with low viscosity (thinner oil) improves
cold-weather starting as well as decreas-
ing fuel consumption while the engine is
warming up. For winter use, 5W-30 oil, par-
ticularly the synthetic type
1, is recom-
mended. Be sure to use good quality oil but
do not use cold-weather oil for hard drivingor in warm weather. See section "Engine
oil" for more information.
•
The load placed on the battery is greater
during the winter since the windshield wip-
ers, lighting, etc. are used more often.
Moreover, the capacity of the battery
decreases as the temperature drops. In
very cold weather, a poorly charged bat-
tery can freeze and be damaged. It is there-
fore advisable to check the state of charge
more frequently and spray an antirust oil on
the battery posts.
•
Volvo recommends the use of snow tires
on all four wheels for winter driving – see
section "Wheels and tires."
•
To prevent the washer fluid reservoir
from freezing, add washer solvents con-
taining antifreeze (see page 211 for the
location of the washer fluid reservoir). This
is important since dirt is often splashed on
the windshield during winter driving,
requiring the frequent use of the washers
and wipers. Volvo Washer Solvent should
be diluted as follows:
•
Down to 14 ° F (–10 ° C): 1 part washer
solvent and 4 parts water
•
Down to 5 ° F (–15 ° C): 1 part washer sol-
vent and 3 parts water
•
Down to 0 ° F (–18 ° C):1 part washer sol-
vent and 2 parts water
•
Down to –18 ° F (–28 ° C): 1 part washer
solvent and 1 part water
•
Use Volvo Teflon Lock Spray in the locks.NOTE
Avoid the use of de-icing sprays as they can
cause damage to the locks.W – Winter/Wet driving mode – enhanced
vehicle traction•
Mode W will only function if the gear selec-
tor is in the (D)rive position.
•
Press the button at the base of the gear
selector to engage/disengage this driving
mode.
•
An LED in the button will light up to indicate
that W is engaged and this will also be dis-
played in the instrument panel (see
page 54).
•
This mode may be selected for starting/
moving off on slippery roads.
1Synthetic oil is not used when the oil is changed at the normal maintenance service intervals except at owner request and at additional charge. Please consult your Volvo retailer.

06 Starting and drivingBefore a long distance trip
06158
It is always worthwhile to have your vehicle
checked by a trained and qualified Volvo serv-
ice technician before driving long distances.
Your retailer or service technician will also be
able to supply you with bulbs, fuses, spark
plugs and wiper blades for your use in the event
that problems occur.
As a minimum, the following items should be
checked before any long trip:•
Check that engine runs smoothly and that
fuel consumption is normal.
•
Check for fuel, oil, and fluid leakage.
•
Check transmission oil level
1.
•
Check condition of drive belts.
•
Check state of the battery's charge.
•
Examine tires carefully (the spare tire as
well), and replace those that are worn.
Check tire pressures.
•
The brakes, front wheel alignment, and
steering gear should be checked by a
trained and qualified Volvo service techni-
cian only.
•
Check all lights, including high beams.
•
Reflective warning triangles are legally
required in some states/provinces.
•
Have a word with your Volvo retailer if you
intend to drive in countries where it may be
difficult to obtain the correct fuel.
•
Consider your destination. If you will be
driving through an area where snow or ice
are likely to occur, consider snow tires.
1To prevent injury from contact with hot surfaces, do not inspect your vehicle’s transmission fluid yourself. Have your vehicle’s transmission fluid level inspected by a qualified Volvo service technician.

09 Maintenance and servicing
Maintaining your vehicle
09``203 Owner maintenance
Periodic maintenance requirements and inter-
vals are described in your vehicle's Warranty
and Service Records Information booklet.
The following points can be carried out
between the normally scheduled maintenance
services.Each time the vehicle is refueled•
Check the engine oil level
•
Clean the windshield, windshield wipers,
headlights, and tail lights
Monthly•
Check cold tire pressure in all tires. Inspect
the tires for wear.
•
Check that engine coolant and other fluid
levels are between the indicated "min" and
"max" markings.
•
Clean interior glass surfaces with a glass
cleaner and soft paper towels.
•
Wipe driver information displays with a soft
cloth.
•
Visually inspect battery terminals for cor-
rosion. Corrosion may indicate a loose ter-
minal connector, or a battery near the end
of its useful service life. Consult a trained
and qualified Volvo service technician for
additional information.
As needed•
Wash the vehicle, including the undercar-
riage, to reduce wear that can be caused
by a buildup of dirt, and corrosion that can
be caused by salt residues.
•
Clean leaves and twigs from air intake
vents at the base of the windshield, and
from other places where they may collect.
•
Complete service information for qualified
technicians is available online for purchase
or subscription at www.volvote-
chinfo.com.
Emission inspection readinessWhat is an Onboard Diagnostic System
(OBD II)?OBD II is part of your vehicle's computerized
engine management system. It stores diagnos-
tic information about your vehicle's emission
controls. It can light the Check Engine light
(MIL) if it detects an emission control "fault." A
"fault" is a component or system that is not
performing within an expected range. A fault
may be permanent or temporary. OBD II will
store a message about any fault.How do states use OBD II for emission
inspections?Many states connect a computer directly to a
vehicle's OBD II system. The inspector can
then read "faults." In some states, this type ofinspection has replaced the tailpipe emission
test.
How can my vehicle fail OBD II emission
inspection?Your vehicle can fail OBD II emission inspec-
tion for any of the following reasons.•
If your Check Engine (MIL) light is lit, your
vehicle may fail inspection.
•
If your vehicle's Check Engine light was lit,
but went out without any action on your
part, OBD II will still have a recorded fault.
Your vehicle may pass or fail, depending
on the inspection practices in your area.
•
If you had recent service that required dis-
connecting the battery, OBD II diagnostic
information may be incomplete and "not
ready" for inspection. A vehicle that is not
ready may fail inspection.
How can I prepare for my next OBD II
emission inspection?•
If your Check Engine (MIL) light is lit – or
was lit but went out without service, have
your vehicle diagnosed and, if necessary,
serviced by a qualified Volvo technician.
•
If you recently had service for a lit Check
Engine light, or if you had service that
required disconnecting the battery, a
period of driving is necessary to bring the
OBD II system to "ready" for inspection. A
half-hour trip of mixed stop-and-go/high-

09 Maintenance and servicingBattery
09214
Battery maintenance
A
G030882
Two types of battery may be used and are fully
interchangeableThe battery in your vehicle is located under the
floor of the cargo compartment.
Driving habits and conditions, climate, the
number of starts, etc. all affect the service life
and function of the battery. In order for your
battery to perform satisfactorily, keep the fol-
lowing in mind:
G030883
•
Check the fluid level in each cell in the bat-
tery every 24 months or every 15,000
1
miles (24,000 km), whichever is sooner.
The fluid should be at the level shown in the
illustration above (A)
2. Do not overfill.
•
Use a screw driver to open the caps or
cover and a flashlight to inspect the level.
•
If necessary, add distilled water. The level
should never be above the indicator (A)
2.
•
The fluid level should be checked if the
battery has been recharged.
•
After inspection, be sure the cap over each
battery cell or cover is securely in place.
•
Check that the battery cables are correctly
connected and properly tightened. Route
ventilation hose through opening in floor
(see one of the illustrations in "Replacing
the battery" on page 215).
•
Never disconnect the battery when the
engine is running, for example when
changing the battery.
•
The battery should be disconnected from
the vehicle when a battery charger is used
directly on the battery.
•
However, if the battery is being charged via
the connecting points in the engine com-
partment (see page 141), the battery must
be connected.WARNING
PROPOSITION 65 WARNING!
Battery posts, terminals, and related acces-
sories contain lead and lead compounds,
chemicals known to the state of California
to cause cancer and reproductive harm.
Wash hands after handling.
1More frequently in warm climates.2The level indicator inside the battery could be designed in various ways. See illustrations.

12 Index
12274
1, 2, 3 ...12-volt sockets.......................................... 75AA/C (air conditioning)...........................93, 94
ABS.......................................................... 143
Active Bi-Xenon headlights (ABL)........60, 64
Airbag system............................................ 20
Air cleaner................................................ 207
Air conditioning.......................................... 90
Air distribution...................................... 92, 94
Air quality sensor....................................... 93
Air vents..................................................... 92
Alarm........................................................ 125
All Wheel Drive......................................... 142
All Wheel Drive – towing.......................... 150
Anti-lock brake system
warning light......................................... 56
Anti-lock Brake System (ABS)................. 143
Ashtray..................................................... 109Audio
system introduction............................ 236
Audio system
Rear seat entertainment (option)........ 253
AUTO (climate control)......................... 94, 95
Automatic transmission........................... 138
Autostart..........................................133, 135
AUX (audio system).................................248
Average speed........................................... 71
AWD......................................................... 142
BBass......................................................... 239
Battery..................................................... 205
maintenance....................................... 214
specifications...................................... 270
Battery – replacing................................... 215
Belt check................................................ 206
Black Box (Vehicle Event Data)............... 202
Blind Spot Information System (BLIS)..... 159
Blower (fan)................................................ 95Booster cushion
accessory............................................. 42
integrated.............................................. 47
Brake fluid................................................ 212
Brake system........................................... 143
Bulbs........................................................ 217
Bulbs, replacing....................................... 217
CCapacities, fluids..................................... 265
Capacity weight....................................... 175
Cargo area cover..................................... 115
Cargo grid................................................ 114
Cargo net................................................. 112
Catalytic converter, three-way................. 272
CD Pause................................................. 249
Central locking system - remote control. 119
Changing a wheel.................................... 182
Changing coolant..................................... 206
Charge air cooler..................................... 269
Check Engine warning light....................... 57
Child restraint anchors......................... 43, 45