ECO mode VOLVO S80 2008 Owner's Manual

The "car" symbol illuminates on the left side of the display when the radar sensor detects another
vehicle ahead. The distance to a vehicle ahead is only regulated when this symbol is illuminated.
Adjusting the set speed
After a speed has been set, it can be increased or decreased by using the
or buttons.
When the system is in active mode, the
button has the same function as , but results in a smaller increase in
speed.
NOTE
If one of the adaptive cruise control buttons is pressed for more than approximately one minute, ACC will be
deactivated. The engine must then be switched off and restarted to reset ACC.
In some situations cruise control cannot be activated. Cruise Control Unavailable is shown in the display, see page
166.
Setting a time interval
The set time interval to vehicles ahead is increased with
and decreased with . The current time interval is
shown briefly in the display following adjustment.
Five different time intervals can be selected and are shown in the display as 1-5 horizontal bars. The
greater the number of bars, the longer the time interval.
At low speeds, when the distance to the vehicle ahead is short, ACC increases the time interval slightly.
In order to follow the vehicle ahead as smoothly as possible, ACC allows the time
159 04 Comfort and driving pleasure
Adaptive Cruise Control-ACC
interval to vary considerably in certain situations.
WARNING
Only use a time interval that is suitable in current traffic conditions.
A short time interval gives the driver limited reaction time if an unexpected situation occurs in traffic.
The number of bars indicating the selected time interval are shown while the setting is being made and for several
seconds afterward. A smaller version of the symbol is then shown to the right in the display. The same symbol is also
displayed when Distance Alert is activated, see page 163
.
Deactivating and resuming settings
Cruise control is deactivated, either with a short press on , or by action taken by the driver, such as braking, etc.

171 04 Comfort and driving pleasure
Driver Alert System -option
Introduction
The Driver Alert System is designed to help a driver who may be becoming fatigued or who is inadvertently leaving
the lane.
The Driver Alert System consists of two different functions that can be switched on together or separately.
Driver Alert Control (DAC)
Lane Departure Warning (LDW)
When one or both of the functions has been switched on, it is in standby mode and is activated when the vehicle
exceeds a speed of 40 mph (65 km/h).
The function deactivates if speed goes under 37 mph (60 km/h).
Both functions use a camera that is dependent on the road/lane being clearly marked by painted lines on each side.
WARNING
The Driver Alert System does not function in all situations and is designed to be a supplementary aid. It is not,
however, intended to replace the driver's attention and judgement.
Driver Alert Control (DAC)-general information

At highway driving speeds, fuel consumption 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 compartment. If the trunk must be kept open for any reason, proceed as follows:
Close the windows
Set the ventilation system control to air flow to floor, windshield and side windows and the blower control to its
highest 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 distributed
so that capacity weight
189 05 During your trip
Driving recommendations
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.
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
transmission. 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 vehicle is in water, do not attempt to restart it. Have the vehicle towed
out of the water.
Engine and cooling system
Under special conditions, for example when driving in hilly terrain, extreme heat or with heavy loads, there is a risk
that the engine and cooling system will overheat. Proceed as follows to avoid overheating the engine.
Maintain a low speed when driving with a trailer up long, steep hills.
Do not turn the engine off immediately when stopping after a hard drive.
WARNING
The cooling fan may start or continue to operate (for up to 6 minutes) after the engine has been switched off.
Remove any auxiliary lights from in front of the grille when driving in hot weather conditions.
Do not exceed engine speeds of 4500 rpm if driving with a trailer in hilly terrain. The oil temperature could become
too high.
Conserving electrical current
Keep the following in mind to help minimize battery drain:
When the engine is not running, avoid using ignition mode II . Many electrical systems (the audio system, the
optional navigation system, power windows, etc) will function in ignition modes 0 and I . These modes reduce drain on
the battery.
Please keep in mind that using systems, accessories, etc., that consume a great deal of current when the engine is not
running could result in the battery being completely drained.
The optional 12 volt socket in the trunk provides electrical current even with the ignition switched off, which drains
the battery.
190 05 During your trip
Driving recommendations
Before a long distance trip
It is always worthwhile to have your vehicle checked by a trained and qualified Volvo service technician before
driving long distances. Your retailer 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
Have the transmission oil level checked.
Check condition of drive belts.
Check state of the battery's charge.

201 05 During your trip
Towing a trailer
Introduction
Volvo recommends the use of Volvo trailer hitches that are specially designed for the vehicle.
NOTE
See page 270
for the maximum trailer and tongue weights recommended by Volvo.
Observe the legal requirements of the state/province in which the vehicles are
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.
Trailer towing does not normally present any particular problems, but take into consideration:
Increase tire pressure to recommended full. See the tire inflation tables on pages 240 and 241.
When your vehicle is new, avoid towing heavy trailers during the first 620 miles (1,000 km).
Maximum speed when towing a trailer: 50 mph (80 km/h).
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.
If the automatic transmission begins to overheat, a message will be displayed in the text window.
Avoid overload and other abusive operation.
Hauling a trailer affects handling, durability, and economy.
It is necessary to balance trailer brakes with the towing vehicle brakes to provide a safe stop (check and observe
state/local regulations).
Do not connect the trailer's brake system directly to the vehicle's brake system.
More frequent vehicle maintenance is required.
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.
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 your nearest authorized Volvo retailer 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.
202 05 During your trip
Towing a trailer
NOTE

The appearance of the engine compartment may vary depending on engine model.
Coolant expansion tank
Power steering fluid reservoir
Engine oil dipstick
Radiator
Filler cap for engine oil
Cover over brake fluid reservoir
Battery
Relay and fuse box
Washer fluid reservoir
Air cleaner
WARNING
The cooling fan may start or continue to operate (for up to 6 minutes) after the engine has been switched off.
WARNING
The ignition should always be completely switched off before performing any operations in the engine compartment.
The distributor ignition system operates at very high voltages. Special safety precautions must be followed to prevent
injury. Always turn the ignition off when:
Replacing distributor ignition components e.g. plugs, coil, etc.
Do not touch any part of the distributor ignition system while the engine is running. This may result in unintended
movements and body injury.
212 06 Maintenance and specifications
Engine oil
Checking the engine oil
The oil level should be checked every time the vehicle is refueled. This is especially important during the period up to
the first scheduled maintenance service.
See page 272 for oil specifications.
Refer to the Warranty and Service Records Information booklet for information on the oil change intervals.
Volvo recommends Castrol.
CAUTION
Not checking the oil level regularly can result in serious engine damage if the oil level becomes too low.
Oil that is lower than the specified quality can damage the engine.

Replacing bulbs
Specification, bulbs
224 06 Maintenance and specifications
Wiper blades and washer fluid
Wiper blades
The wiper blades are different lengths. The blade on the driver's side is longer than the blade on the passenger side.
Service position
The wiper blades must be in the service (vertical) position for replacement or washing.
1. Switch off the ignition (ignition mode 0, see page 80
) and keep the remote key in the ignition slot1.
2. Move the right steering wheel lever up and hold it for at least 1 second. The wipers will then move to the vertical
position on the windshield.

2 0 0 8
VOLVO S80
235 06 Maintenance and specifications
Wheels and tires
Introduction
Your vehicle is equipped with tires according to the vehicle's tire information placard on the B-pillar (the structural
member at the side of the vehicle, at the rear of the driver's door opening).
The tires have good road holding characteristics and offer good handling on dry and wet surfaces. It should be noted
however that the tires have been developed to give these features on snow/ice-free surfaces.
Certain models are equipped with "all-season" tires, which provide a somewhat higher degree of road holding on
slippery surfaces than tires without the "all-season" rating. However, for optimum road holding on icy or snow-
covered roads, we recommend suitable winter tires on all four wheels.
When replacing tires, be sure that the new tires are the same size designation, type (radial) and preferably from the
same manufacturer, on all four wheels. Otherwise there is a risk of altering the car's roadholding and handling
characteristics.
Storing wheels and tires
When storing complete wheels (tires mounted on rims), they should be suspended off the floor or placed on their sides
on the floor.
Tires not mounted on rims should be stored on their sides or standing upright, but should not be suspended.
CAUTION
Tires should preferably be stored in a cool, dry, dark place, and should never be stored in close proximity to
solvents, gasoline, oils, etc.
Tread wear indicator

Some spare tires require higher inflation pressure than the other tires. Consult the tire inflation tables beginning on
page 240 or see the inflation pressure placard.
239 06 Maintenance and specifications
Wheels and tires
Tire specifications
Speed ratings
The speed ratings in the table below translate as follows:
Load ratings
The speed ratings in the table below translate as follows:
See also page 245 for an explanation of the designations on the sidewall of the tire.
240 06 Maintenance and specifications
Wheels and tires
Tire inflation pressure table - U.S. models
The following tire pressures are recommended by Volvo for your vehicle. Refer to the tire inflation placard for
information specific to the tires installed on your vehicle at the factory.

NOTE
A certain amount of air seepage from the tires occurs naturally and tire pressure fluctuates with seasonal changes in
temperature. Always check tire pressure regularly.
241 06 Maintenance and specifications
Wheels and tires
Tire inflation pressure table - Canadian models
The following tire pressures are recommended by Volvo for your vehicle. Refer to the tire inflation placard for
information specific to the tires installed on your vehicle at the factory.
NOTE
A certain amount of air seepage from the tires occurs naturally and tire pressure fluctuates with seasonal changes in
temperature. Always check tire pressure regularly.
242 06 Maintenance and specifications
Wheels and tires
Tire Pressure Monitoring System (TPMS) -U.S. models only