2007 VOLVO XC90 cooling

2007 Volvo XC90
Octane rating
Volvo engines are designed to achieve rated horsepower, torque, and fuel\
economy performance using premium 91 octane
fuel. Volvo recommends premium for best performance, but using 87 octane\
or above will not affect engine reliability.
In demanding driving conditions, such as operating the vehicle in hot we\
ather, towing a trailer, or driving for extended
periods at higher altitudes than normal, it may be advisable to switch t\
o higher octane fuel (91 or higher) or to change
gasoline brands to fully utilize your engine's capacity, and for the smo\
othest possible operation.
NOTE: When switching to higher octane fuel or changing gasoline brands, it ma\
y be necessary to fill the tank more than
once before a difference in engine operation is noticeable.
Fuel Formulations
Do not use gasoline that contains lead as a knock inhibitor, and do not \
use lead additives. Besides damaging the exhaust
emission control systems on your vehicle, lead has been strongly linked \
to certain forms of cancer.
Many fuels contain benzene as a solvent. Unburned benzene has been stron\
gly linked to certain forms of cancer. If you
live in an area where you must fill your own gas tank, take precautions.\
These may include:
l standing upwind away from the filler nozzle while refueling
l refueling only at gas stations with vapor recovery systems that fully se\
al the mouth of the filler neck during refueling
l wearing neoprene gloves while handling a fuel filler nozzle.
Use of Additives
With the exception of gas line antifreeze during winter months, do not a\
dd solvents, thickeners, or other store-bought
additives to your vehicle's fuel, cooling, or lubricating systems. Overu\
se may damage your engine, and some of these
additives contain organically volatile chemicals. Do not needlessly expo\
se yourself to these chemicals.
file:///K|/ownersdocs/2007/2007_XC90/07xc90_06.htm (3 of 32)12/30/2006\
5:53:44 PM

2007 Volvo XC90
BRAKE Brake circuit malfunction
The brake system is a hydraulic system consisting of two master cylinder\
s and two separate brake circuits. If a problem
should occur in one of these circuits, it is still possible to stop the \
vehicle with the other brake circuit.
If the brake pedal must be depressed farther than normal and requires gr\
eater foot pressure, the stopping distance will be
longer.
A warning light in the instrument panel will light up to warn the driver\
that a fault has occurred.
If this light comes on while driving or braking, stop immediately and ch\
eck the brake fluid level in the reservoir.
NOTE: Press the brake pedal hard and maintain pressure on the pedal - do not \
pump the brakes.
WARNING!
If the fluid level is below the MIN mark in the reservoir or if a "Brake\
failure - Service urgent" message is displayed in
the text window: DO NOT DRIVE. Have the vehicle towed to a Volvo retaile\
r and have the brake system inspected.
NOTE: When the vehicle is at a standstill and the engine is idling, e.g. at a\
traffic light and the brake pedal is depressed,
the pedal may go down slightly. This is a normal function of the power-a\
ssisted brake system.
Power brakes function only when the engine is running
The power brakes utilize vacuum pressure which is only created when the \
engine is running. Never let the vehicle roll to a
stop with the engine switched off.
If the power brakes are not working, the brake pedal must be pressed app\
roximately four times harder than usual to make
up for the lack of power assistance. This can happen for example when to\
wing your vehicle or if the engine is switched off
when the vehicle is rolling. The brake pedal feels harder than usual.
Water on brake discs and brake pads affects braking
Driving in rain and slush or passing through an automatic car wash can c\
ause water to collect on the brake discs and pads.
This will cause a delay in braking effect when the pedal is depressed. T\
o avoid such a delay when the brakes are needed,
depress the pedal occasionally when driving through rain, slush etc. Thi\
s will remove the water from the brakes. Check
that brake application feels normal. This should also be done after wash\
ing or starting in very damp or cold weather.
Severe strain on the brake system
The brakes will be subject to severe strain when driving in mountains or\
hilly areas, or when towing a trailer. Vehicle
speed is usually slower, which means that the cooling of the brakes is l\
ess efficient than when driving on level roads. To
reduce the strain on the brakes, shift into a lower gear and let the eng\
ine help with the braking. Do not forget that, if you
are towing a trailer, the brakes will be subjected to a greater than nor\
mal load.
pg. 128 Starting and driving
Brake system
Anti-lock brakes (ABS)
If the warning lamp lights up there is a malfunction of the ABS system (\
the standard braking system will however
function) and the vehicle should be driven cautiously to a Volvo retail\
er for inspection. The Anti-lock Braking System
(ABS) helps to improve vehicle control (stopping and steering) durin\
g severe braking conditions by limiting brake lockup.
file:///K|/ownersdocs/2007/2007_XC90/07xc90_06.htm (14 of 32)12/30/200\
6 5:53:44 PM

2007 Volvo XC90
Check the belt regularly to make sure it is in good condition and is cle\
an. A worn or dirty belt can cause
poor cooling and low alternator output as well as impair the operation o\
f the power steering and the air
conditioning unit.
NOTE: The drive belt is equipped with a self-tensioning mechanism and require\
s no adjustment
between changes.
WARNING!
The engine must not be running when this check is
performed.
Check coolant level
The cooling system must be filled with coolant and not leak to operate a\
t maximum efficiency. Check
the coolant level regularly. The level should be between the "MAX" and "\
MIN" marks on the expansion
tank. The check should be made with particular thoroughness when the eng\
ine is new or when the
cooling system has been drained.
Do not remove the filler cap other than for topping up with coolant. Fre\
quent removal may prevent
coolant circulation between the engine and the expansion tank during eng\
ine warm up and cooling.
Changing coolant
Normally, the coolant does not need to be changed. If the system must be\
drained, consult your Volvo
retailer.
NOTE: Do not top off with water only. This reduces the rust-protective and an\
tifreeze qualities of the
coolant and has a lower boiling point. It can also cause damage to the c\
ooling system if it should freeze.
Top off with Volvo Genuine Coolant/Antifreeze only (a 50/ 50 mix of wat\
er and antifreeze). CAUTION!
The cooling system must always be kept filled to the correct level. If i\
t is not kept filled, there can be
high local temperatures in the engine which could result in damage. Diff\
erent types of antifreeze/
coolant may not be mixed.
WARNING!
Never remove the radiator cap while the engine is warm. Wait until the v\
ehicle
cools.
file:///K|/ownersdocs/2007/2007_XC90/07xc90_09.htm (6 of 37)12/30/2006\
5:53:50 PM

2007 Volvo XC90
pg. 185 Maintenance
Engine compartment
Engine compartment
1. Brake fluid reservoir
2. Relay/fuse box
3. Air cleaner
4. Cooling fan
5. Radiator
6. Dipstick-engine oil
7. Filler cap-engine oil
8. Washer fluid reservoir
9. Power steering fluid reservoir
10. Expansion tank-coolant
11. Data plate
12. Battery (under floor in rear cargo area)
WARNING!
The cooling fan (6) may start or continue to operate (for up to 6 min\
utes) after the engine has been
switched off.
pg. 186 Maintenance
file:///K|/ownersdocs/2007/2007_XC90/07xc90_09.htm (7 of 37)12/30/2006\
5:53:50 PM

2007 Volvo XC90
Changing coolant
Normally, the coolant does not need to be changed. If the system must be\
drained, consult your Volvo
retailer.
NOTE: Do not top off with water only. This reduces the rust-protective and an\
tifreeze qualities of the
coolant and has a lower boiling point. It can also cause damage to the c\
ooling system if it should freeze.
Top off with Volvo Genuine Coolant/Antifreeze only (a 50/50 mix of wate\
r and antifreeze). CAUTION!
The cooling system must always be kept filled to the correct level. If i\
t is not kept filled, there can be
high local temperatures in the engine which could result in damage. Diff\
erent types of antifreeze/
coolant may not be mixed.
Check coolant regularly!
WARNING!
l Never remove the radiator cap while the engine is warm. Wait until the v\
ehicle cools.
l If it is necessary to top up the coolant when the engine is warm, unscre\
w the expansion tank cap
slowly so that the overpressure dissipates.
pg. 189 Maintenance
Fluids
file:///K|/ownersdocs/2007/2007_XC90/07xc90_09.htm (12 of 37)12/30/200\
6 5:53:50 PM

2007 Volvo XC90
Coolant - changing 184, 188
Coolant - checking level of
184
Cooling system
213
Courtesy light
91
Cruise control
63
Cup holder
95
Curb weight
161
Current fuel consumption
62
D
Defroster
80
Detachable trailer hitch
140
Dimensions
210
Dolby Pro Logic II (DPL II)
225
Door mirror defroster
61
Driver distraction
5
Driving economically
121
E
Economical driving
121
Electrical current - conserving
116
Electrical system
216
Electrically operated moonroof
73
Emission inspection
182
Engine - starting
119
Engine compartment
185
Engine oil
186, 212
Engine oil, volume
212
Engine specifications
217
F
Federal Clean Air Act
180
FIX NEXT SERVICE
51
Flat tire, changing
166
Fog light
48
file:///K|/ownersdocs/2007/2007_XC90/07xc90_12.htm (3 of 9)12/30/2006 \
5:53:56 PM