2006 VOLVO XC70 check engine

General information
Important
Before you operate your car for the first time, please familiarize
yourself with the new-engine oil consumption information on page
160. You should also be familiar with the information in chapters
one, two and four of this manual.
Information contained in the balance of the manual is extremely
useful and should be read after operating the vehicle for the first
time.
The manual is structured so that it can be used for reference. For
this reason, it should be kept in the car for ready access.
Do not export your Volvo to another country before investigating
that country’s applicable safety and exhaust emission requirements.
In some cases it may be difficult or impossible to comply with these
requirements. Modifications to the emission control system(s) may
render your Volvo not certifiable for legal operation in the U.S.,
Canada and other countries.
All information, illustrations and specifications contained in this
manual are based on the latest product information available at the
time of publication. Please note that some vehicles may be equipped
differently, depending on special legal requirements and that
optional equipment described in this manual may not be available in
all markets.
Volvo reserves the right to make model changes at any time, or to
change specifications or design, without notice and without
incurring obligation.
CALIFORNIA Proposition 65 Warning
WARNING! Engine exhaust, some of its constituents, and certain
vehicle components contain or emit chemicals known to the state of
California to cause cancer, and birth defects or other reproductive
harm. In addition, certain fluids contained in vehicles and certain
products of component wear contain or emit chemicals known to the
State of California to cause cancer, and birth defects or other
reproductive harm.
Shiftlock
When your car is parked, the gear selector is locked in the (P)ark
position. To release the selector from this position, turn the ignition key
to position II (or start the engine), depress the brake pedal, press the
button on the front of the gear selector knob and move the selector from
(P)ark.
Keylock
This means that when you switch off the ignition, the gear selector must
be in the (P)ark position before the key can be removed from the
ignition switch.
Anti-lock Brake System (ABS)
The ABS system in your car performs a self-diagnostic test when the
vehicle first reaches the speed of approximately 12 mph (20 km/h). The
brake pedal will pulsate several times and a sound may be audible from
the ABS control module. This is normal.
Fuel filler door
Press the button on the light switch panel (see page 35) when the car is at
a standstill to unlock the fuel filler door. Please note that the fuel filler
door will remain unlocked until the car begins to move forward.
An audible click will be heard when the fuel filler door relocks.
Fuel filler cap
After refueling, close the fuel filler cap by turning it clockwise until it
clicks into place. If this cap is not closed tightly or if the engine is
running when the car is refueled, the Malfunction Indicator Lamp
(“Check Engine” light) may indicate a fault.
WARNING! If your vehicle is involved in an accident, unseen damage
may affect your vehicle's driveability and safety.

Volvo and the environment
In addition to continuous environmental refinement of conventional
gasoline-powered internal combustion engines, Volvo is actively looking
at advanced technology alternative-fuel vehicles.
When you drive a Volvo, you become our partner in the work to lessen
the car's impact on the environment.
To reduce your vehicle's environmental impact, you can:
•Maintain proper air pressure in your tires. Tests have shown de-
creased fuel economy with improperly inflated tires
•Follow the recommended maintenance schedule in your Warranty and
Service Records Information booklet.
•Drive at a constant speed
•See an authorized Volvo retailer as soon as possible for inspection if
the check engine (malfunction indicator) lamp
illuminates, or stays on
after the vehicle has started
•Properly dispose of any vehicle related waste such as used motor oil,
used batteries, brake pads, etc.
•When cleaning your car, use Volvo's own car care products, all of
which have systematically been adapted to the environment
PremAir®
On the surface of the radiator in the engine compartment, there is a special
coating called PremAir®. PremAir® works as a catalytic converter,
converting most of the ozone passing through the radiator into oxygen,
thereby reducing harmful ground-level ozone.
PremAir is a registered trademark of Engelhard Corporation.
Volvo is committed to the well being of our customers. As a natural
part of this commitment, we care about the environment in which we all
live. Caring for the environment means an everyday involvement in
reducing our environmental impact.
Volvo's environmental activities are based on a holistic view, which
means we consider the overall environmental impact of a product
throughout its complete life cycle. In this context, design, production,
product use, and recycling are all important considerations.
In production, Volvo has partly or completely phased out several
chemicals including freons, lead chromates, naphtanates, asbestos,
mercury and cadmium; and reduced the amount of chemicals used in
our plants 50% since 1991.
In use, Volvo was the first in the world to introduce into production a
three-way catalytic converter with a Lambda sond, now called oxygen
sensor, in 1976. The current version of this highly efficient system
reduces emissions of harmful substances (CO, HC, NOx) from the
exhaust pipe by approximately 95% and the search to eliminate the
remaining emissions continues. Volvo is the only automobile manufac-
turer to offer CFC-free retrofit kits for the air conditioning system for
all models as far back as the M/Y 1975 240. Advanced electronic
engine controls, refined purification systems and cleaner fuels are
bringing us closer to our goal.
After Volvo cars and parts have fulfilled their use, recycling is the next
critical step in completing the life cycle. The metal content is about
75% of the total weight of a car, which makes the car among the most
recycled industrial products. In order to have efficient and well con-
trolled recycling, many Volvo variants have printed dismantling
manuals, indicating the weight and material of individual components.
For Volvo, all homogeneous plastic parts weighing more than 1.7 oz.
(50 grams) are marked with international symbols that indicate how the
component is to be sorted for recycling.

27
Instrument panel
1 Turn signals
2 Text window
3 Temperature gauge
The pointer should be approximately midway
on the gauge when driving.
Do not drive the car if the warning light is
on. The text window will provide you with
additional information.
If the engine temperature remains high, check
coolant level - see page 154.
4 Trip odometer/reset button
The trip odometer is used for measuring
shorter distances. The last digit indicates 1/10
mile/kilometer. Press the button quickly to
toggle between trip odometers 1 and 2. Hold in
the button for more than 2 seconds to reset.
5 Odometer
6 Speedometer
7 General warning light (see page 28).
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Please note that this symbol does not
indicate a fault with your car.
At low speeds or when the car is not moving,
the temperature readings may be slightly
higher than the actual ambient temperature.
12 Clock/reset button
Turn the button to adjust the clock.
13 Fuel gauge

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When the warning light comes on there are
approximately 2.1 US gal. (8 liters) of fuel
remaining.
14 Indicator and warning lights
8 High beam indicator light
9 Tachometer
Indicates engine speed in thousands of rpm.
Do not drive for long with the needle in the red
section. The engine has an built-in function
preventing too high engine speed. When this
function operates, you may discern some
pulsation, which is normal.
10 Gear and driving mode indicator
The currently selected driving mode is
displayed here. If you use the Geartronic
function on the automatic transmission, the
currently selected gear will be displayed.
11 Ambient temperature indicator
This display indicates the air temperature
outside your car. A "snowflake" symbol in the
text window is displayed when the temperature
is in the range of 23 - 36° F (-5 - +2° C).

29
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CHECK
ENGINE
Malfunction indicator lamp
On-Board Diagnostics II (OBDII): As you
drive, a computer called “OBDII” monitors
your car’s engine, transmission, electrical and
emission systems. The CHECK ENGINE
light will light up if the computer senses a
condition that potentially may need correcting.
When this happens, please have your car
checked by a Volvo retailer as soon as
possible.
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Fuel requirements
Fuel requirements
Octane rating: Volvo engines are designed for optimum performance
on unleaded premium gasoline with an octane rating AKI of 91, or
above. AKI (ANTI KNOCK INDEX) is an average of the Research
Octane Number, RON, and the Motor Octane Number, MON. (RON +
MON/2). The minimum octane requirement is AKI 87 (RON 91).
Deposit control gasoline (detergent additives)
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NOTE: Some U.S. and Canadian gasolines contain an octane enhancing
additive called methyl-cyclopentadienyl manganese tricarbonyl (MMT).
If such fuels are used, your Emission Control System performance may
be affected, and the Check Engine light (malfunction indicator lamp)
located on your instrument panel may light. If this occurs, please return
your vehicle to an authorized Volvo retailer for service.Gasoline containing alcohol and ethers
”Oxygenated fuels”
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CAUTION!
Do not use gasolines containing methanol (methyl alcohol, wood
alcohol). This practice can result in vehicle performance deteriora-
tion and can damage critical parts in the fuel system. Such damage
may not be covered under the New Vehicle Limited Warranty.

92
Starting the engine
CAUTION:
•The engine should be idling when you
move the gear selector. Never accelerate
until after you feel the transmission
engage! Accelerating immediately after
selecting a gear will cause harsh engage-
ment and premature transmission wear.
•Selecting P or N when idling at a standstill
for prolonged periods of time will help
prevent overheating of the automatic
transmission fluid.
•Do not race a cold engine immediately
after starting. Oil flow may not reach
some lubrication points fast enough to
prevent engine damage.WARNING!
•Always place the gear selector in Park or
in reverse on models with a manual
transmission, and apply the parking brake
before leaving the vehicle. Never leave the
car unattended with the engine running.
•Always open garage doors fully before
starting the engine inside a garage to
ensure adequate ventilation. The exhaust
gases contain carbon monoxide, which is
invisible and odorless but very
poisonous.
•An extra mat on the driver's floor can
cause the accelerator pedal and the clutch
to catch. Check that the movement of the
accelerator pedal and clutch is not
impeded. Not more than one protective
floor covering may be used at one time.

102
Points to remember
Electrical system
When replacing the battery or when carrying
out work involving the electrical system, the
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WARNING!
•Driving with the tailgate open: Driving
with the tailgate open could mean that
poisonous exhaust gases enter the
passenger compartment.
If the tailgate must be kept open for any
reason, proceed as follows:
- Close the windows.
- Set the ventilation system to air flow to
floor, windshield and side windows and
blower control to its highest setting.
•Floor mats: An extra mat on the driver's
floor can cause the accelerator pedal to
catch. Check that the movement of the
accelerator pedal is not impeded. Not
more than one protective floor covering
may be used at one time.
Cooling system
The risk for engine overheating is greatest,
especially in hot weather, when:
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Emergency towing
Front towing eyelet Rear towing eyelet
Emergency towing
The towing eyelet is located in the tool bag,
under the floor of the cargo area, with the
spare tire. This eyelet must be screwed into the
positions provided on the right sides of either
the front or rear bumper (see illustration). To
attach the towing eyelet:
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After the car has been towed, the eyelet should
be removed and returned to the tool bag. Press
the cover back into position.
Precautions when the car is
in tow
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CAUTION:
•Please check with state and local authori-
ties before attempting this type of towing,
as vehicles being towed are subject to
regulations regarding maximum towing
speed, length and type of towing device,
lighting, etc.
•If the car’s battery is dead, do not attempt
to start the vehicle by pushing or pulling it
as this will damage the three-way catalytic
converter(s). The engine must be jump
started using an auxiliary battery (see page
109).
•If the car is being towed on a flat bed
truck, the towing eyelets must not be used
to secure the car on the flat bed. Consult
the tow truck operator.
WARNING!
•Remember that the power brakes and
power steering will not function when
engine is not running. The braking and
steering systems will function but the
brake pedal pressure required is 3 - 4
times above normal and greater steering
effort must be exerted.
•The towing eyelets must not be used for
pulling another vehicle out of a ditch or
for any similar purpose involving severe
strain.
•Do not use the towing eyelets to pull the
car up onto a flat bed tow truck.
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