brake VOLVO S80 2015 Owner´s Manual

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Eco Guide* and Power Meter*
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126* Option/accessory, for more information, see Introduction.
Introduction
These gauges help improve driving economy. To display or remove these functions from the instrument panel, select the "Eco" theme (seepage 76). Driving statistics are also stored and can be displayed in the form of a bar chart (seepage 222).
Eco Guide
This gauge gives an indication of how eco- nomically the vehicle is being driven.
Current (instantaneous) reading
Average
Current (instantaneous) readingThis is the current level of economical driving; the higher the reading, the more economicallythe vehicle is being driven. This value is calculated based on the vehi- cle's speed, engine speed (rpm), engine loadand brake use. The optimal speed range is between approxi- mately 30–50 mph (50–80 km/h), preferably atas low rpm as possible. The markers fallwhen the brake or accelerator pedal ispressed. If the current reading is very low, the red field in the gauge will illuminate after a slight delay,indicating low driving economy.
AverageThe average reading changes graduallyaccording to changes in the current readingto indicate how economically the vehicle hasbeen driven recently. The higher the averagereading, the more economically the vehiclehas been driven.
Power Meter
This gauge indicates the engine power that has been utilized and the amount of powerremaining.
Available power
Utilized power
Available powerThe smaller, upper indicator shows the engine's available power 1
. The higher the
reading on the scale, the greater the amount of power remaining in the current gear.
Utilized powerThe larger, lower indicator shows the amount of engine power that has been utilized 1
. The
1 Depending on rpm

03 Your driving environment
Eco*
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* Option/accessory, for more information, see Introduction.129
engaged from the engine and engine rpm will be reduced to the idle level(approx. 700-800 rpm), which helps reducefuel consumption. This feature is primarily intended to be used in driving situations where a decrease inspeed is expected, such as when approach-ing an intersection or a traffic light.
Eco Coast enables proactive driving with as little braking as possible.
Combinations of On and OffDepending on the driving situation, Eco can be used in different ways to help reduce fuelconsumption:
• Eco activated
: this enables Eco Coast,
which allows the vehicle to roll freely for
as far as possible when the driver relea-
ses the accelerator pedal (e.g., when approaching a traffic light or intersection).
or
• Eco deactivated
: engine braking can be
used when the vehicle will only roll for
a short distance (in heavy traffic, etc.) or
when driving down hills .
To help keep fuel consumption as low as possible, Eco Coast should not be used intraffic situations where the brakes have toused frequently.
Activating Eco CoastEco Coast is activated when the accelerator pedal is released completely if:
• Eco is activated
• The gear selector is in
D
• The vehicle's speed is between approxi- mately 40–85 mph (65–140 km/h). Alwaysobserve posted speed limits
• The gradient of a down-slope is less thanapproximately 6%
Deactivating Eco CoastIn certain situations, it may be advisable to switch off the Eco Coast function, such as:
• When driving down steep hills, in order to utilize engine braking
• Prior to passing another vehicle, in orderto do so as safely as possible
Deactivating Eco Coast (and reactivating engine braking) can be done in the followingways:
• Press the
ECO button on the center con-
sole
• Move the gear selector to the manual "
S
+/– " position
• Change gears using the steering wheel paddles*
• Press the brake or accelerator pedal
Eco Coast limitationsThis function will not be available if:
• Cruise control is activated
• The gradient of a down-slope is morethan approximately 6%
• The steering wheel paddles* are used tomanually change gears
• The engine and/or transmission have notreached their normal operating tempera-ture
• The gear selector is moved from
D to the
manual " S+/–" position
• The vehicle's speed is not within the40–85 mph (65–140 km/h). interval
Additional information and settings

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Start/Stop*
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* Option/accessory, for more information, see Introduction.131
Introduction
Start/Stop is a function that is available with certain engines/transmissions. It temporarilyswitches off the engine when the vehicle isnot moving, for instance in heavy traffic or ata traffic light to help reduce fuel consumption.
Function and use
Start/Stop symbol in the instrument panel
Start/Stop button on the center console
Start/Stop is activated automatically each time the engine is started 1
. The symbol in the
instrument panel will be displayed for several seconds when the engine starts and the indi-cator light in the On/Off button will remainilluminated while the function is activated. All of the vehicle's systems will function while the engine is auto-stopped, although the function of certain systems may reduced atthis time. For example, blower speed andhigh infotainment system volume may bereduced to help conserve the battery'scapacity.
Auto-stopping the engineNormally, when Start/Stop is activated andthe brakes are applied until the vehicle comesto a standstill, the engine will auto-stop auto-matically
if the driver keeps the brake pedal
depressed .
To remind the driver that the enginehas been auto-stopped, theStart/Stop symbol will illuminate inthe instrument panel and remain on
until the engine restarts.
If the ECO function* (see page 128) is activated, theengine may auto-stop beforethe vehicle comes to a com-plete standstill.
Auto-starting the engineThe engine restarts as soon as the driver releases the brake pedal.
Deactivating Start/StopIn certain situations (e.g.,driving in heavy, stop-and-gotraffic), it may be preferableto deactivate Start/Stop. This is done by pressing the button in the center console.
The indicator light in the button will go out. Start/Stop will remain deactivated until the button is pressed again or until the engine isswitched off and restarted by the driver.
Hill Start Assist (HSA)When starting on steep hills, HSA (see page 121) retains pressure on the brake pedalfor several seconds after the pedal has beenreleased in order to keep the vehicle at astandstill. The brakes will be released afterseveral seconds or when the driver pressesthe accelerator pedal.
1 Not when the engine is started using the optional Engine Remote Start feature, see page 118

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Start/Stop*
03
132* Option/accessory, for more information, see Introduction.
Auto-stop exceptions
In certain situations or conditions, the engine may not auto-stop when the vehicle comes
to a standstill, such as if:
Condition/situation
The vehicle's speed has not reached a speed of approx. 5 mph (ca 8 km/h) afterthe most recent auto-start or after thedriver has started the engine.
The driver unbuckles his/her seat belt.
The main battery's charge is below the minimum level.
The engine has not reached its normal operating temperature.
The ambient temperature is below freezing or above approx. 85°F (30°C).
The windshield's heating function* is acti- vated.
The climate system cannot keep the desired settings in the passenger compart-ment; the blower will operate at highspeed.
The vehicle is backing up.
Condition/situation
The main battery's temperature is below freezing or too high.
The driver is turning the steering wheel hard.
The road's incline is very steep.
A trailer's electrical system is connected to the vehicle.
The hood has been opened A
.
The transmission has not reached its nor- mal operating temperature.
Atmospheric pressure is below a level equivalent to an altitude of approx. 4,900–8,200 ft (1500–2500 m) above sea level.The actual pressure is also affected by cur-rent weather conditions.
The Adaptive Cruise Control's* Queue Assist feature is activated.
The gear selector is in the SB
or " +/–" posi-
tion.
A Certain engines only
B Sport mode (where applicable)
Auto-start exceptions
In certain situations or conditions, the engine may auto-start even though the driver is still
pressing the brake pedal, such as if:
Condition/situation
Condensation forms on the windows.
The climate system cannot keep the desired settings in the passenger compart-ment.
Electrical current consumption is tempo- rarily high or the main battery's charge isbelow the minimum level.
The brake pedal is pumped repeatedly.
The hood has been opened A
.
The vehicle begins to move or increases speed slightly (if the engine auto-stoppedbefore the vehicle was at a standstill (seepage 128)).
The driver unbuckles his/her seat belt while the gear selector is in the D or N positions.
The steering wheel is turned A
.

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Brakes
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* Option/accessory, for more information, see Introduction.135
Brake system
The brake system is a hydraulic system con- sisting of two separate brake circuits. If aproblem should occur in one of these circuits,it is still possible to stop the vehicle with theother brake circuit. If the brake pedal must be depressed farther than normal and requires greater foot pres-sure, the stopping distance will be longer. A warning light in the instrument panel will light up to warn the driver that a fault hasoccurred. If this light comes on while driving or braking, stop immediately and check the brake fluidlevel in the reservoir.
NOTE
Press the brake pedal hard and maintain pressure on the pedal – do not pump thebrakes.
WARNING
If the fluid level is below the MIN mark in
the reservoir or if a brake system message is shown in the information display: DO
NOT DRIVE . Have the vehicle towed to a
trained and qualified Volvo service techni-cian and have the brake system inspected.
Brake pad inspectionOn vehicles equipped with a jack*, the condi- tion of the brake pads can be checked byraising the vehicle (see page 315 for informa-tion about using the jack and removing awheel) and performing a visual inspection ofthe brake pads.
WARNING
• If the vehicle has been driven immedi- ately prior to a brake pad inspection,the wheel hub, brake components,etc., will be very hot. Allow time forthese components to cool before car-rying out the inspection.
• Apply the parking brake and put thegear selector in the Park (
P) position.
• Block the wheels standing on theground, use rigid wooden blocks orlarge stones.
WARNING
•Use the jack intended for the vehicle when changing a tire. For any otherjob, use stands to support the vehicle.
• The jack should be kept well-greasedand clean, and should not be dam-aged.
• Be sure the jack is on a firm, level,non-slippery surface.
• No objects should be placed betweenthe base of jack and the ground, orbetween the jack and the attachmentbar on the vehicle.
• The jack must correctly engage thejack attachment.
• Never allow any part of your body tobe extended under a vehicle suppor-ted by a jack.
Brake lightsThe brake lights come on automatically when the brakes are applied.
Adaptive brake lightsThe adaptive brake lights activate in the event of sudden braking or if the ABS system isactivated. This function causes an additionaltaillight on each side of the vehicle to illumi-nate to help alert vehicles traveling behind.

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Brakes
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The adaptive brake lights activate if: •The ABS system activates for more than approximately a half second
• In the event of sudden braking while thevehicle is moving at speeds aboveapproximately 6 mph (10 km/h)
When the vehicle has come to a stop, the brake lights and additional taillights remain onfor as long as the brake pedal is depressed oruntil braking force on the vehicle is reduced.
Power brakes function only when the engine is running
The power brakes utilize vacuum pressure which is only created when the engine is run-ning. Never let the vehicle roll to a stop withthe engine switched off. If the power brakes are not working, consid- erably higher pressure will be required on thebrake pedal to compensate for the lack ofpower assistance. This can happen for exam-ple when towing your vehicle or if the engineis switched off when the vehicle is rolling. Thebrake pedal feels harder than usual.
Water on brake discs and brake pads affects braking
Driving in rain and slush or passing throughan automatic car wash can cause water tocollect on the brake discs and pads. This willcause a delay in braking effect when the pedal is depressed. To avoid such a delaywhen the brakes are needed, depress thepedal occasionally when driving through rain,slush, etc. This will remove the water from thebrakes. Check that brake application feelsnormal. This should also be done after wash-ing or starting in very damp or cold weather.
Severe strain on the brake systemThe brakes will be subject to severe strainwhen driving in mountains or hilly areas, orwhen towing a trailer. Vehicle speed is usuallyslower, which means that the cooling of thebrakes is less efficient than when driving onlevel roads. To reduce the strain on thebrakes, shift into a lower gear and let theengine help with the braking. Do not forgetthat if you are towing a trailer, the brakes willbe subjected to a greater than normal load.
Anti-lock braking system (ABS)The Anti-lock Braking System (ABS) helps toimprove vehicle control (stopping and steer-ing) during severe braking conditions by limit-ing brake lockup. When the system "senses"impending lockup, braking pressure is auto-matically modulated in order to help preventlockup that could lead to a skid. The system performs a brief self-diagnostic test when the engine has been started anddriver releases the brake pedal. Another auto-matic test may be performed when the vehi-
cle first reaches a speed of approximately6 mph (10 km/h). The brake pedal will pulsateseveral times and a sound may be audiblefrom the ABS control module, which is nor-mal.
Cleaning the brake discsCoatings of dirt and water on the brake discsmay result in delayed brake function. Thisdelay is minimized by cleaning the brake lin-ings. Cleaning the brake pads is advisable in wet weather, prior to long-term parking, and afterthe vehicle has been washed. Do this bybraking gently for a short period while thevehicle is moving.
Emergency Brake AssistanceEBA is designed to provide full brake effectimmediately in the event of sudden, hardbraking. The system is activated by the speedwith which the brake pedal is depressed. When the EBA system is activated, the brake pedal will go down and pressure in the brakesystem immediately increases to the maxi-mum level. Maintain full pressure on thebrake pedal in order to utilize the systemcompletely. EBA is automatically deactivatedwhen the brake pedal is released.

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Brakes
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NOTE
•When the EBA system is activated, the brake pedal will go down and pressurein the brake system immediatelyincreases to the maximum level. Youmust maintain full pressure on thebrake pedal in order to utilize the sys-tem completely. There will be no brak-ing effect if the pedal is released. EBAis automatically deactivated when thebrake pedal is released.
• When the vehicle has been parked forsome time, the brake pedal may sinkmore than usual when the engine isstarted. This is normal and the pedalwill return to its usual position when itis released.
Symbols in the instrument panel
SymbolSpecification
Steady glow – Check the brake fluid level. If the level is low, fillwith brake fluid and check forthe cause of the brake fluidloss.
Steady glow for two seconds when the engine is started –There was a fault in the brakesystem's ABS function whenthe engine was last running.
WARNING
If and come on at the
same time and the brake level is below the MIN mark in the reservoir or if a brake sys-
tem-related message is shown in the infor-mation display: DO NOT DRIVE . Have the
vehicle towed to a trained and qualifiedVolvo service technician and have thebrake system inspected.

03 Your driving environment
Parking brake
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Electric parking brake
An electric parking brake has the same func- tion as a manual parking brake.
NOTE
•A faint sound from the parking brake's electric motor can be heard when theparking brake is being applied. Thissound can also be heard during theautomatic function check of the park-ing brake.
• The brake pedal will move slightlywhen the electric parking brake isapplied or released.
Low battery voltageIf the battery voltage is too low, the park- ing brake cannot be applied or released. Connect an auxiliary battery if the battery voltage is too low, see page 119.
Applying the electric parking brake
Parking brake control
1. Press firmly on the brake pedal.
2. Push the control. >The
symbol in the instrument
panel flashes while the parking brake is being applied and glows steadily whenthe parking brake has been fullyapplied.
3. Release the brake pedal and ensure that the vehicle is at a standstill.
4. When the vehicle is parked, the gear selector must be in position P.
NOTE
• In an emergency the parking brake can be applied when the vehicle is movingby holding in the control. Braking willbe interrupted when the acceleratorpedal is depressed or the control isreleased.
• An audible signal will sound during thisprocedure if the vehicle is moving atspeeds above 6 mph (10 km/h).
Parking on a hill
•
If the vehicle is pointing uphill, turn the front wheels so that they point away fromthe curb.
• If the vehicle is pointing downhill, turn thefront wheels so that they point toward thecurb.
The parking brake should also be applied.

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Parking brake
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Releasing the electric parking brake
Parking brake control
Manual release1. Fasten the seat belt.
2. Insert the remote key in the ignition slotand press the START/STOP ENGINE
button (or press the START/STOP
ENGINE button with a valid remote key in
the passenger compartment on vehicles with the optional keyless drive). 3. Press firmly on the brake pedal.
4. Pull the parking brake control.
Automatic release1. Start the engine.
NOTE
•
For safety reasons, the parking brake is only released automatically if the engineis running and the driver is wearing aseat belt.
• The electric parking brake will bereleased immediately when the acceler-ator pedal is pressed and the gearselector is in position
D or R.
2. Fasten the seat belt.
3. Move the gear selector to position D or R
and press the accelerator pedal. The parking brake will release when the vehi-cle begins to move.
Heavy load uphillA heavy load, such as a trailer, can cause the vehicle to roll backward when the parkingbrake is released automatically on a steepincline. To help avoid this:
1. Keep the electric parking brake lever pushed in with the left hand while shifting into Drive with the right.
2. While pressing the accelerator pedal to pull away, release the parking brake leveronly after the vehicle begins to move.
Symbol and messages in the instrument panel
See page 199 for information about display- ing or erasing messages.
SymbolMessageDescription/action
"Message"Read the message in the information display
A flashing symbol indicates that the parking brake is being applied. If the symbol flashes in any other situation then this means that a fault has arisen. Read the message on the information display.

03 Your driving environment
Parking brake
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SymbolMessageDescription/action
-Park brake not fully releasedA fault is preventing the parking brake from being released. Try to apply the parking brake and release it sev- eral times. If the problem persists, contact an authorized Volvo workshop. If you drive off with this error mes-sage showing, a warning signal sounds.
-Parking brake not appliedA fault is preventing the parking brake from being applied. Try to apply the parking brake and release it several times. If the problem persists, contact an authorized Volvo workshop. If you drive off with this error messageshowing, a warning signal sounds.
-Parking brake Service requiredA fault has occurred. Try to apply and release. Contact a Volvo workshop if the fault remains
WARNING
If the vehicle must be parked before the fault has been corrected, always put thegear selector in P and turn the wheels so
that they point away from the curb if thevehicle is pointing uphill or toward the curbif it is pointing downhill.