2017 VOLVO V90 wheel

STARTING AND DRIVING
406
Brake functions
The car's brakes are used to reduce the speed or prevent the car from rolling.
Besides the foot brake and parking brake, the car is equipped with several automatic brake assistfunctions. These can assist the driver by notneeding to keep his/her foot on the brake pedalwhen stationary at a traffic light, when starting onan uphill gradient or when driving on a downhillgradient. Depending on the car's equipment, the following auto braking functions are available:
• Automatic braking when stationary (AutoHold)
• Hill start assist (Hill Start Assist)
• Auto braking after a collision
• City Safety
Related information
•
Foot brake (p. 406)
• Parking brake (p. 409)
• Hill start assist (p. 412)
• Automatic braking when stationary (p. 412)
• Auto braking after a collision (p. 408)
Foot brake
The foot brake is used to reduce the car's speed while driving.
Foot brake systemThe car is equipped with two brake circuits. If a brake circuit is damaged, the brake pedal willengage deeper. Higher pressure on the pedal willtherefore be needed to produce the normal brak-ing effect. The driver's brake pedal pressure is assisted by a brake servo.
WARNING
The brake servo only works when the engine is running.
If the foot brake is used when the engine is switched off then the pedal will feel stiff and ahigher pedal pressure must be used to brake thecar. In very hilly terrain or when driving with a heavy load the brakes can be relieved by using enginebraking in manual gearshift mode. Engine brakingis most efficiently used if the same gear is useddownhill as up.
Anti-lock braking systemThe car has anti-lock brakes, Anti-lock BrakingSystem (ABS), which prevent the wheels fromlocking while braking and allows maintained steering control. Vibration may be felt in thebrake pedal when this is engaged and this is nor-mal. A short test of the ABS system is made automat- ically after the engine has been started when thedriver releases the brake pedal. A further auto-matic test of the system may be made at lowspeed. The test may be experienced as pulses inthe brake pedal.
Braking on wet roadsWhen driving for a prolonged period of time inheavy rain without braking, the braking effect maybe delayed slightly when next using the brakes.This may also be the case after a car wash. It isthen necessary to depress the brake pedal moreforcefully. You should therefore maintain agreater distance to the vehicles in front. Brake the car firmly after driving on wet roads or using a car wash. This warms up the brake discs,enabling them to dry faster and protecting themagainst corrosion. Bear in mind the current trafficsituation when braking.
Braking on salted roadsWhen driving on salted roads, a layer of salt mayform on the brake discs and brake linings. Thismay extend braking distance. You should there-fore maintain an extra large safety distance tovehicles in front. In addition, make sure you dothe following:

STARTING AND DRIVING
* Option/accessory.409
•
Rear Collision Warning (p. 340)
• Blind Spot Information
* (p. 340)
Parking brake The parking brake prevents the car from rolling away from stationary by means of mechanicallylocking/blocking two wheels.
The control for the parking brake is located in the tunnel console between the seats.
A faint electric motor noise can be heard when the electrically-operated parking brake is beingapplied. The noise can also be heard during theautomatic function checking of the parking brake. If the car is stationary when the parking brake is applied then it only acts on the rear wheels. If it isapplied when the car is moving then the normalfoot brake is used, i.e. the brake acts on all fourwheels. Brake function changes over to the rearwheels when the car is almost stationary.
Related information
• Brake functions (p. 406)
• Using the parking brake (p. 410)
• In the event of a fault in the parking brake(p. 411)

STARTING AND DRIVING
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411
Releasing automatically
1. Put the seatbelt on.
2. Start the car.
3. With automatic gearbox:Select gear position D or R and depress the
accelerator pedal.With manual gearbox:Engage a suitable gear, release the clutch and depress the accelerator pedal.
> The parking brake releases and the sym- bol in the driver display extinguishes.
Parking on a hill
WARNING
Always use the parking brake when parking on an inclined surface. Engaging a gear or the automatic transmission's P position is not suf-
ficient to hold the car stationary in all situa- tions.
If the car is parked facing uphill: • Turn the wheels
away from the kerb.
If the car is parked facing downhill:
• Turn the wheels
towards the kerb.
Heavy load uphill
A heavy load, such as a trailer, can cause the car to roll backward when the parking brake isreleased automatically on a steep incline. Avoid this by pulling the control upwards while drivingthe car away. Release the control when theengine achieves traction.
Settings for parking brake
Automatic activation of the parking brake isselected via the centre display. Automatic activation when the car is switched off:1.
Press
Settings in the top view.
2. Press
My CarParking Brake and
Suspension and deselect/select the func-
tion Auto Activate Parking Brake.
Related information
• Parking brake (p. 409)
• In the event of a fault in the parking brake (p. 411)
• Automatic braking when stationary (p. 412)
In the event of a fault in the parking brake
Contact an authorised Volvo workshop if it is not possible to release or apply the parking brakeafter several attempts.
An acoustic warning signal sounds when driving with the parking brake applied. If the car has to be parked before a possible fault is rectified then the wheels must be turned as ifparking on a hill and the gear selector must be in position P, or engage first gear if the car has a
manual gearbox.
Low battery voltageIf the battery voltage is too low then the parking brake can neither be released nor applied. Con-nect a donor battery if the battery voltage is toolow.
Replacing the brake liningsThe rear brake linings must be replaced at aworkshop due to the design of the electrically-operated parking brake - an authorised Volvoworkshop is recommended.

STARTING AND DRIVING
* Option/accessory.
416 •
Speed camera information
* (p. 350)
• Driving with a trailer (p. 426)
• Driving in water (p. 413)
• Alarm
* (p. 262)
• Level control
* and shock absorption (p. 405)
• Warning triangle (p. 500)
• Emergency puncture repair kit (p. 490)
• Spare wheel
* (p. 498)
Winter driving
For winter driving it is important to perform cer- tain checks of the car in order to ensure that itcan be driven safely.
Check the following in particular before the cold season:
• The engine coolant must contain 50% glycol.This mixture protects the engine againstfrost erosion down to approximately –35 °C.To avoid health risks, different types of glycolmust not be mixed.
• The fuel tank must be kept filled to preventcondensation.
• Engine oil viscosity is important. Oils withlower viscosity (thinner oils) facilitate startingin cold weather and also reduce fuel con-sumption while the engine is cold. Readmore about suitable oils in the section"Adverse driving conditions for engine oil".
IMPORTANT
Low viscosity oil must not be used for hard driving or in hot weather.
• The condition of the starter battery and charge level must be inspected. Coldweather places great demands on the starter battery and its capacity is reduced by thecold.
• Use washer fluid with antifreeze to avoid iceforming in the washer fluid reservoir.
Slippery driving conditionsTo achieve optimum roadholding Volvo recom-mends using winter tyres on all wheels if there isa risk of snow or ice.
NOTE
The use of winter tyres is a legal requirement in certain countries. Studded tyres are notpermitted in all countries.
Practise driving on slippery surfaces under con- trolled conditions to learn how the car reacts.
Related information
•Topping up coolant (p. 518)
• Adverse driving conditions for engine oil(p. 569)
• Starter battery (p. 530)
• Winter wheels (p. 499)
• Filling washer fluid (p. 529)
• Replacing a wiper blade (p. 528)
• Parking climate
* (p. 206)
• Activating/deactivating defrost of windowsand door mirrors (p. 194)

STARTING AND DRIVING
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* Option/accessory.417
•
Drive modes
* (p. 400)
• Foot brake (p. 406)
• All-wheel drive
* (p. 405)
• Electronic stability control (p. 273)
Opening/closing the fuel filler flap and refuelling
The fuel tank is fitted with a coverless fuel filler system.
Opening/closing the fuel filler flapThe car must be unlocked for the fuel filler flap to be opened.
In the driver display, the arrownext to the tank symbol indi-cates which side of the car thefuel filler flap is located.
1. Open the fuel filler flap with a gentle presson the rear of the flap.
2. After refuelling is finished - close the flap with a gentle press.
Refuelling at a petrol station
Refuelling is carried out as follows.
1. Open the fuel filler flap.
2. Choose fuel that is approved for use in the car. See information on approved fuels in the sections on "Petrol" and "Diesel" respec-tively.
3. Insert the pump nozzle in the fuel filler open- ing. The filler pipe has two opening caps. Thepump nozzle must be pushed past both capsbefore refuelling is started.

STARTING AND DRIVING
* Option/accessory.
422
Economical driving
Drive economically and eco-consciously by driv- ing smoothly, thinking ahead, and adjusting yourdriving style and speed to the prevailing condi-tions.
• For lower fuel consumption, activate ECO drive mode.
• Use the Eco Coast 17
freewheel function -
engine braking will cease and the car'skinetic energy can be used to freewheel forlonger distances.
• Drive in the highest gear 18
possible, adapted
to the current traffic situation and road -lower engine speeds result in lower fuel con-sumption. Use the gear shift indicator.
• Drive at a steady speed and keep a good dis-tance to other vehicles and objects to mini-mise braking.
• High speed results in increased fuel con-sumption - the wind resistance increaseswith speed.
• Do not run the engine to operating tempera-ture at idling speed, but rather drive with anormal load right after starting - a coldengine consumes more fuel than a warmone. •
Drive with the correct air pressure in thetyres and check this regularly - select ECOtyre pressure for best results.
• Choice of tyres can affect fuel consumption -seek advice on suitable tyres from a dealer.
• Remove unnecessary items from the car -the greater the load the higher the consump-tion.
• Use engine braking to slow down, when itcan take place without risk to other roadusers.
• A roof load and space box increase windresistance, leading to higher consumption -remove the load carriers when not in use.
• Avoid driving with open windows.
WARNING
Never switch off the engine while moving, such as downhill, this deactivates importantsystems such as the power steering andbrake servo.
Related information
•
Drive mode ECO (p. 402)
• Approved tyre pressures (p. 574)
• Fuel consumption and CO2 emissions (p. 572)
• Drive-E - cleaner driving pleasure (p. 25)
Towing bracket
*
The car can be equipped with a towing bracket that makes it possible to tow e.g. a trailer afterthe car.
There may be different towing bracket variants available for the car; contact a Volvo dealer formore information. For information on towing capacity and towball load, see the section "Towing capacity and tow-ball load".
IMPORTANT
When the engine is switched off, the constant battery voltage to the trailer connector can beswitched off automatically so as not to drainthe starter battery.
IMPORTANT
The towball needs regular cleaning and lubri- cation with grease in order to prevent wear.
17 See the section "Drive mode ECO".
18 Applies to driving with manual gear changing.

STARTING AND DRIVING
* Option/accessory.427
shows a symbol and a message. Other lamps on the trailer must be checked manually by thedriver before departure, see the heading "Check-ing trailer lamps".
Symbol
Message
•Trailer turn indicator Right
turn indicator malfunction
•Trailer turn indicator Left
turn indicator malfunction
•Trailer brake light Malfunc-
tion
If any lamp for the trailer's direction indicators is broken, the driver display symbol for directionindicators will also flash more quickly than nor-mal.
Checking trailer lamps *
Automatic checking
After a trailer is connected electrically, it is possi- ble to check that the trailer lamps are working viaan automatic lamp activation. The function helpsthe driver check that the trailer lamps are workingbefore starting off. The engine must be switched off to perform thecheck.
1. When a trailer is connected to the towing
bracket, the
Automatic Trailer Lamp
Check message is shown in the driver dis-
play.
2. Confirm the message by pressing the right- hand steering wheel keypad's O button.
> The lamp check starts.
3. Exit the car to check lamp functionality. > All trailer lamps start to flash - then thelamps are switched on one at a time.
4. Visually check that all lamps available on the trailer are operational.
5. After a moment, all lamps on the trailer flash again.
> The check is complete.
Switching off automatic checking
The automatic checking function can be switched off in the centre display. 1.Press
Settings in the top view.
2. Press
My CarLights and Lighting.
3. Deselect
Automatic Trailer Lamp Check.
Manual checking
If the automatic checking is switched off then it is possible to start the check manually. 1.Press
Settings in the top view. 2.
Press
My CarLights and Lighting.
3. Select
Manual Trailer Lamp Check.
> The lamp check starts. Exit the car to check lamp functionality.
Level control *The car's system for level control endeavours to maintain a constant height regardless of load (upto the maximum permissible weight). When thecar is stationary the rear of the car lowers slightly,which is normal.
Related information
•Driving with a trailer under special conditions(p. 428)
• Towing capacity and towball load (p. 564)
• Trailer Stability Assist
* (p. 428)
• Approved tyre pressures (p. 574)
• Towing bracket
* (p. 422)

STARTING AND DRIVING
* Option/accessory.
428
Driving with a trailer under special conditions
When driving with a trailer in hilly terrain in a hot climate there may be a risk of overheating.
In the event of overheating, a warning symbol illu- minates in the driver display together with a mes-sage, see section "Overheating in the engine anddrive system". The following only applies to cars with automatic gearbox. The automatic gearbox selects the optimum gear related to load and engine speed.
Steep inclinesDo not lock the automatic gearbox in a highergear than the engine "can cope with" - it is notalways a good idea to drive at a high gear withlow engine speed.
Parking on a hill1. Depress the brake pedal fully.
2. Activate the parking brake.3. Select gear position P.
4. Release the brake pedal.Block the wheels with chocks when parking a car with hitched trailer on a hill.
Starting on a hill1. Depress the brake pedal fully. 2.
Select gear position D.
3. Releasing the parking brake.
4. Release the brake pedal and start driving off.
Related information
• Driving with a trailer (p. 426)
• Overheating in the engine and drive system (p. 414)
• Using the parking brake (p. 410)
Trailer Stability Assist
*
The function of the trailer stability assist Trailer Stability Assist (TSA) is to stabilise cars withattached trailers in situations where they begin