2011 VOLVO C70 check engine

Introduction
Environment
14
Volvo and the environment
Volvo is committed to the well being of its cus-
tomers. 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 environ-
mental 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 CFCs,
lead chromates, asbestos, and cadmium; and
reduced the number of chemicals used in our
plants 50% since 1991.
Volvo was the first in the world to introduce into
production a three-way catalytic converter with
a Lambda sond, now called the heated 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 – 99% and
the search to eliminate the remaining emis-
sions continues. Volvo is the only automobile
manufacturer to offer CFC-free retrofit kits for
the air conditioning system of all models as far
back as the 1975 model 240. Advanced elec-
tronic engine controls and cleaner fuels are
bringing us closer to our goal. In addition tocontinuous environmental refinement of con-
ventional gasoline-powered internal combus-
tion engines, Volvo is actively looking at
advanced technology alternative-fuel vehicles.
When you drive a Volvo, you become our part-
ner 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 decreased fuel econ-
omy with improperly inflated tires.
•Follow the recommended maintenance
schedule in your Warranty and Service
Records Information booklet.
•Drive at a constant speed whenever pos-
sible.
•See a trained and qualified Volvo service
technician as soon as possible for inspec-
tion if the check engine (malfunction indi-
cator) light illuminates, or stays on after the
vehicle has started.
•Properly dispose of any vehicle-related
waste such as used motor oil, used batter-
ies, brake pads, etc.
•When cleaning your vehicle, please use
genuine Volvo car care products. All Volvo
car care products are formulated to be
environmentally friendly.
RecyclingAs part of Volvo’s commitment to the environ-
ment, it is essential for the vehicle to be recy-
cled in an environmentally sound way. Almost
the entire vehicle can be recycled and for that
reason, the vehicle’s final owner is requested
to contact a Volvo retailer for information about
approved and certified recycling facilities.

02 Instruments and controls
Indicator and warning symbols
02
56
Function check
The indicator and warning symbols1 light up
when you turn the ignition key or the optional
keyless drive start control to the driving posi-
tion (position II) before starting. This shows that
the symbols are functioning.
When the engine starts, all sym-
bols go out. If the engine is not
started within 5 seconds, all of the
symbols except the malfunction
indicator light (CHECK ENGINE)
and the oil pressure warning light
will go out. Certain symbols may
not have their functions illustrated, depending
on the car's equipment.
The PARK BRAKE symbol will not go out until
the parking brake has been released.
Symbols in the center of the instrument
panel
Warning symbolThe red warning symbol lights up
to indicate a fault that could affect
the car's drivability.This symbol
illuminates when the vehicle is
traveling at speeds above 5 mph
(7 km/h). A text explaining the nature of the fault
will also be shown in the information display.
The symbol and accompanying text will remain
on until the fault has been corrected. This sym-
bol may also light up in combination with other
indicator or warning symbols.
If the red warning symbol lights up:
1. Stop the car as soon as possible in a suit-
able location.
2. Read the message in the information dis-
play.
3. Follow the instructions provided, or con-
tact a trained and qualified Volvo service
technician. Erase the message by pressing
READ, see page 61.
Information symbolThe yellow information symbol
lights up to alert the driver to a
message in the information dis-
play. This symbol illuminates when
the vehicle is traveling at speeds
below 5 mph (7 km/h).
The message can be erased by pressing the
READ button, see page 61, or will disappear
automatically (the length of time required for
the message to disappear varies, depending
on the function indicated).
When the message "
TIME FOR REGULAR
MAINTENANCE" is displayed, the text can be
erased and the information symbol light can be
turned off by pressing the READ button. The
text will disappear and the symbol light will go
out automatically after two minutes.
1On certain engines, the symbol for low oil pressure is not used. Instead, a text warning is provided in the information display, see page 219.

02 Instruments and controls
Symbols – instrument panel
02
58
Symbols – left side
G026439
1. Malfunction indicator light
As you drive, a computer called
On-Board Diagnostics II (OBDII)
monitors your car's engine, trans-
mission, 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 trained and
qualified Volvo service technician as soon as
possible.
A CHECK ENGINE light may have many cau-
ses. Sometimes, you may not notice a change
in your car's behavior. Even so, an uncorrected
condition could hurt fuel economy, emission
controls, and drivability. Extended driving with-
out correcting the cause could even damage
other components in your car.
NOTE
Canadian models are equipped with the
second symbol.
2. Anti-lock Brake system (ABS)If the warning light comes on, there
is a malfunction of the ABS system
(the standard braking system will
still function).
The vehicle should be driven to a
trained and qualified Volvo service
technician for inspection, see
page 153 for additional informa-
tion.
NOTE
Canadian models are equipped with the
second symbol.
3. Rear fog lightThis symbol indicates that the rear
fog light (located in the driver's
side taillight cluster) is on.
4. Stability system DSTCThis indicator symbol flashes when
the DSTC (Dynamic Stability and
Traction control system) is actively
working to stabilize the car, see
page 157 for more detailed infor-
mation.
5. Tire Pressure Monitoring SystemThis system monitors inflation
pressure in the tires. See page
201 for more information.
6. Fuel level warning lightWhen this light comes on, the vehi-
cle should be refueled as soon as
possible.

02 Instruments and controls
Symbols – instrument panel
02

59 Symbols – right side
G026438
1. Turn signal indicator for trailer (certain
markets only)
If you are towing a trailer, this light
will flash simultaneously with the
turn signals on the trailer. If the
light does not flash when signaling,
one of the turn signals on the trailer
or on the car are not functioning properly.
2. Parking brake appliedThis light is on when the parking
brake (hand brake) is applied. The
parking brake lever is situated
between the front seats, see
page 156 for more information.
NOTE
Canadian models are equipped with the
second symbol.
3. SRS system warning lightIf this light comes on while the car
is being driven, or remains on for
longer than approximately 10 sec-
onds after the car has been
started, the SRS system's diag-
nostic functions have detected a fault in a seat
belt lock or pretensioner, a front airbag, side
impact airbag, and/or an inflatable curtain.
Have the system(s) inspected by a trained and
qualified Volvo service technician as soon as
possible.
4. Oil pressure warning light1
If the light comes on while driving,
the car, stop the engine immedi-
ately, and check the engine oil
level. If the oil level is normal and
the light stays on after restart, have
the car towed to the nearest trained and quali-
fied Volvo service technician. After hard driv-
ing, the light may come on occasionally when
the engine is idling. This is normal, provided it
goes off when the engine speed is increased.
5. Seat belt reminderThis symbol (and the seat belt
reminder light above the rear view
mirror) will light up if either front
seat occupant has not buckled his/
her seat belt. If the car is not mov-
ing, the symbols will go out after approximately
6 seconds.
6. Generator warning lightIf the light comes on while the
engine is running, have the charg-
ing system checked by an author-
ized Volvo workshop.
1On certain engines, this symbol is not used to indicate low oil pressure. Instead, a text warning is provided in the information display, see also page 219.

02 Instruments and controls
Symbols – instrument panel
02
60
7. Brake failure warning lightIf this light comes on while driving
or braking, stop the car as quickly
as possible in a safe place, open
the hood, and check the brake fluid
level in the reservoir, see
page 218 for the location of the
reservoir.
NOTE
Canadian models are equipped with the
second symbol.
WARNING
If the fluid level is below the MIN mark in the
reservoir or if a BRAKE FAILURE STOP
SAFELY message is displayed in the infor-
mation display: DO NOT DRIVE. Have the
car towed to a trained and qualified Volvo
service technician and have the brake sys-
tem inspected.
If the BRAKES and ABS warning lights come
on at the same time, this could indicate a fault
in the brake system.
In this case:
1. Stop the car in a suitable place and switch
off the engine.2. Restart the engine.
3. If both warning lights go off, no further
action is required and the car can be
driven.
4. If both lights remain on after the engine has
been restarted, switch off the engine again
and check the brake fluid level, see
page 218 for the location of the reservoir.
Door open warning
The driver will be alerted if one of the doors, the
hood or the trunk are open or ajar.
At low speedsIf the car is moving at a speed of
less than approximately 3 mph
(5 km/h), the Information symbol in
the instrument panel will light up
and a message will be shown in the
information display indicating which door(s),
etc is not completely closed.
At higher speedsIf the car is moving at a speed
above approximately 6 mph
(10 km/h), the Warning symbol in
the instrument panel will light up
and a message will be shown in the
information display indicating which door(s),
etc is not completely closed.

02 Instruments and controls
Information display
02
62
MessageMeaning
TIME FOR
REGULAR
MAINTE-
NANCEThis message is affec-
ted by the number of
miles/km driven, by the
number of months, or
by the number of engine
hours since the service
reminder was reset at
the most recent regu-
larly scheduled service.
REMINDER
CHECK OIL
LEVELStop as soon as possi-
ble and switch off the
engine, check the oil
level and top up if nec-
essary, see page 219.
AThis is part of the message. Additional information will also
be displayed.

06 Starting and driving
General information
06
140
Economical driving conserves natural
resources
Better driving economy may be obtained by
thinking ahead, avoiding rapid starts and stops
and adjusting the speed of your vehicle to
immediate traffic conditions.
Observe the following rules:
•Bring the engine to normal operating tem-
perature as soon as possible by driving
with a light foot on the accelerator pedal for
the first few minutes of operation. A cold
engine uses more fuel and is subject to
increased wear.
•Whenever possible, avoid using the vehicle
for driving short distances. This does not
allow the engine to reach normal operating
temperature.
•Drive carefully and avoid rapid acceleration
and hard braking.
•Use the transmission's Drive (D) position
as often as possible and avoid using kick-
down.
•Do not exceed posted speed limits.
•Avoid carrying unnecessary items (extra
load) in the vehicle.
•Maintain correct tire pressure. Check tire
pressure regularly (when tires are cold).
•Remove snow tires when threat of snow or
ice has ended.
•At highway driving speeds, fuel consump-
tion will be lower with the air conditioning
on and the windows closed than with the
air conditioning off and the windows open.
•Using the onboard trip computer's fuel
consumption modes can help you learn
how to drive more economically.
Other factors that decrease gas mileage
are:
•Dirty air cleaner
•Dirty engine oil and clogged oil filter
•Dragging brakes
•Incorrect front end alignment
Some of the above mentioned items and others
are checked at the standard maintenance
intervals.
WARNING
Driving with the trunk open: Driving with
the trunk open could lead to poisonous
exhaust gases entering the passenger com-
partment. If the trunk must be kept open for
any reason, proceed as follows:
1. Close the windows.
2. Set the ventilation system control to air
flow to floor, windshield and side win-
dows and the blower control to its high-
est setting.
Weight distribution affects handling
At the specified curb weight your vehicle has a
tendency to understeer, which means that the
steering wheel has to be turned more than
might seem appropriate for the curvature of a
bend. This ensures good stability and reduces
the risk of rear wheel skid. Remember that
these properties can alter with the vehicle load.
The heavier the load in the cargo area, the less
the tendency to understeer.
Handling, roadholding
Vehicle load, tire design and inflation pressure
all affect vehicle handling. Therefore, check
that the tires are inflated to the recommended
pressure according to the vehicle load. See the
"Tire pressure" section. Loads should be dis-
tributed so that capacity weight or maximum
permissible axle loads are not exceeded.
Driving through water
The vehicle can be driven through water up to
a depth of approximately 9 in. (25 cm), at a
maximum speed of 6 mph (10 km/h).
•Take particular care when driving through
flowing water.
•Clean the electrical connections for trailer
wiring after driving in mud or water
•When driving through water, maintain low
speed and do not stop in the water.

06 Starting and driving
General information
06

141
WARNING
After driving through water, press lightly on
the brake pedal to ensure that the brakes
are functioning normally. Water or mud can
make the brake linings slippery, resulting in
delayed braking effect.
CAUTION
•Engine damage will occur if water is
drawn into the air cleaner.
•If the vehicle is driven through water
deeper than 9 in. (25 cm), water may
enter the differential and the transmis-
sion. This reduces the oil's lubricating
capacity and may shorten the service
life of these components.
•Do not allow the vehicle to stand in
water up to the door sills longer than
absolutely necessary. This could result
in electrical malfunctions.
•If the engine has been stopped while the
car is in water, do not attempt to restart
the engine. Have the car towed out of
the water.
Cold weather precautions
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 help protect your vehicle
during 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 page 274 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 anti-rust oil
on the battery posts.
•Volvo recommends the use of snow tires
on all four wheels for winter driving – see
the chapter "Wheels and tires."
•To prevent the washer fluid reservoir from
freezing, add washer solvents containing
antifreeze (see page 218 for the location of
the washer fluid reservoir). This is impor-
tant since dirt is often splashed on the
windshield during winter driving, requiring
the frequent use of the washers and wip-
ers. Volvo Washer Solvent should be dilu-
ted 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 solvent and 2 parts
1Synthetic oil is not used when the oil is changed at the normal maintenance intervals except at owner request and at additional charge. Please consult your Volvo retailer.