ABS VOLVO S90 2017 Owner´s Manual

STARTING AND DRIVING
349
Turn Auto-hold on or off by pressing the control in the tunnel console. The indicator light illumi-nates when the function is on. When Auto-hold is off, Hill Start Assist (HSA) will be activated to help prevent the vehicle from roll-ing backwards when starting up a hill.
Instrument panel symbol
Symbol
Explanation
The symbol in the instrument panel illuminates when this func-tion is using the normal brakes tokeep the vehicle stationary.
A
BThis symbol in the instrument panel illuminates when Auto-holdis using the parking brake to keepthe vehicle stationary
A
US models
B Canadian models
Related information
• Hill Start Assist (p. 350)
• Brake functions (p. 348)
Brake assist system The Brake Assist System (BAS) increases brak- ing force, thereby helping reduce braking dis-tance.
The system monitors the driver's braking habits and increases braking force when necessary.Brake force can be increased up to the point atwhich the ABS system is activated. The functionis deactivated when pressure on the brake pedaldecreases.
Related information
•Brakes (p. 346)
Braking effect after a collision
In certain types of collisions, the vehicle's brakes are applied to help prevent or mitigate a secon-dary collision.
Maintaining control of the vehicle after a collision may be difficult. To help avoid or mitigate theeffect of a secondary collision, the brakes areapplied automatically to help bring the vehicle toa stop. The brake lights and hazard warning flashers will be activated and the flashers will remain on afterthe vehicle has come to a standstill. The parkingbrake will then be applied automatically. In a situation where stopping the vehicle may not be desirable, the driver can override this systemby pressing the accelerator pedal. This feature can only function if the brake system is intact after the collision.
Related information
• Brake functions (p. 348)
• Airbag system (p. 65)
• Rear Collision Warning (RCW) (p. 308)

STARTING AND DRIVING
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Emergency brake lightsThe emergency brake lights activate in the event of hard braking/rapid deceleration at most nor-mal driving speeds or if the ABS system is acti-vated. This function causes an additional taillighton each side of the vehicle to illuminate to helpalert vehicles traveling behind.
Once the emergency brake lights have been acti- vated, if the driver releases the brake pedal, thebrake lights will return to their normal function.
Related information
• Brakes (p. 346)
• Hazard warning flashers (p. 146)
• Brake lights (p. 146)
Hill Start Assist
Hill Start Assist (HSA) helps prevent the vehicle from rolling backwards when starting up a hill. Ifyou are backing up a hill, HSA helps prevent thevehicle from rolling forward.
HSA makes it easier to start or back up on a hill by retaining pressure on the brake pedal for sev-eral seconds after the pedal has been released inorder to keep the vehicle at a standstill. The brakes will be released after several seconds or when the driver presses the accelerator pedal. HSA is available even if the Auto-hold braking function is turned off.
Related information
• Brake functions (p. 348)
• Auto-hold brake function (p. 348)
Parking brake The electric parking brake helps to keep the vehicle stationary when it is parked.
Parking brake control in the tunnel console between the front seats
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 the auto-matic function check of the parkingbrake.
• The brake pedal will move slightly whenthe electric parking brake is applied orreleased.
If the vehicle is not moving when the parking brake is applied, only the rear wheels are affec-

STARTING AND DRIVING
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355
capacity weight or maximum permissible axle loads are not exceeded.
• At the specified curb weight your vehicle hasa tendency to understeer, which means thatthe steering wheel has to be turned morethan might seem appropriate for the curva-ture of a bend. This ensures good stabilityand reduces the risk of rear wheel skid.Remember that these properties can alterwith the vehicle load. The heavier the load inthe cargo compartment, the less the ten-dency to understeer.
Related information
•ECO drive mode (p. 377)
• Tire inflation pressure table (p. 532)
• Volvo and the environment (p. 15)
Driving through standing water
The vehicle should be driven with extreme cau- tion if it is necessary to drive through standingwater.
The vehicle can be driven through water up to a depth of approximately 9 in. (25 cm) at walkingspeed. Be particularly careful when drivingthrough flowing water. • Take particular care when driving through flowing water.
• After driving through water, apply the brakesand check that they are functioning correctly.
• Clean the electrical connections for trailerwiring after driving in mud or water.
• When driving through water, maintain lowspeed and do not stop in the water.
• Avoid driving through salt water if at all pos-sible to help avoid the risk of corrosion.
CAUTION
• Engine damage will occur if water is drawn into the air cleaner.
• Damage to any components, the engine,transmission, turbo-charger, differential orits internal components caused by flood-ing, vapor lock or insufficient oil is notcovered under warranty.
• Do not allow the vehicle to stand in waterup to the door sills longer than absolutelynecessary. This could result in electricalmalfunctions.
• If the engine has been stopped while thevehicle is in water, do not attempt torestart it. Have the vehicle towed out ofthe water.
WARNING
•
Avoid driving through standing or rushing water. Doing so can be dangerous and itmay also be difficult to determine theactual depth of the water.
• If water cannot be avoided, after drivingthrough the water, press lightly on thebrake pedal to ensure that the brakes arefunctioning normally. Water or mud canmake the brake linings slippery, resultingin delayed braking effect.

STARTING AND DRIVING
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Driving with a trailer
When towing a trailer, always observe the legal requirements of the state/province.
• All Volvo models are equipped with energy- absorbing shock-mounted bumpers. Trailerhitch installation should not interfere with theproper operation of this bumper system.
Trailer towing does not normally present any par-ticular problems, but take into consideration:
• Increase tire pressure to recommended fullpressure.
• When your vehicle is new, avoid towing heavytrailers during the first 620 miles (1,000 km).
• Maximum speed when towing a trailer:50 mph (80 km/h).
• Engine and transmission are subject toincreased loads. Therefore, engine coolanttemperature should be closely watched whendriving in hot climates or hilly terrain. Use alower gear and turn off the air conditioner ifthe temperature gauge needle enters the redrange.
• If the automatic transmission begins to over-heat, a message will be displayed in the textwindow.
• Avoid overload and other abusive operation.
• Hauling a trailer affects handling, durability,and economy. •
It is necessary to balance trailer brakes withthe towing vehicle brakes to provide a safestop (check and observe state/local regula-tions).
• Do not connect the trailer's brake systemdirectly to the vehicle's brake system.
• More frequent vehicle maintenance isrequired.
• Remove the ball holder when the hitch is notbeing used.
NOTE
•
When parking the vehicle with a trailer on a hill, apply the parking brake before put- ting the gear selector in
P. Always follow
the trailer manufacturer's recommenda- tions for wheel chocking.
• When starting on a hill, put the gear selector in
D before releasing the parking
brake.
• If you use the manual (Geartronic) shift positions while towing a trailer, make surethe gear you select does not put toomuch strain on the engine (using toohigh a gear).
• The drawbar assembly/trailer hitch maybe rated for trailers heavier than the vehi-cle is designed to tow. Please adhere toVolvo's recommended trailer weights.
• Avoid driving with a trailer on inclines ofmore than 15%.

STARTING AND DRIVING
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* Option/accessory.381
Related information
•Conditions for Start/Stop (p. 381)
• Start/Stop (p. 379)
Conditions for Start/Stop
Certain conditions must be met for the Start/ Stop feature to function. If a condition is not met,this will be indicated in the instrument panel.
The engine does not auto-stopIn certain situations or conditions, the engine may not auto-stop when the vehicle comes to a
standstill, such as when:
• the vehicle has not reached a speed of approx. 8 mph (12 km/h) after starting.
• after several auto-stops, the speed mustagain exceed approx. 8 mph (12 km/h)before the next auto-stop.
• the driver's seat belt is unbuckled.
• the main battery's charge is below the mini-mum level.
• the engine has not reached its normal oper-ating temperature.
• the ambient temperature is below approx.23°F (-5°C) or above approx. 85°F (30°C).
• the windshield's heating function
* is acti-
vated.
• the climate system cannot keep the desiredsettings in the passenger compartment.
• the vehicle is backing up.
• the main battery's temperature is above orbelow the permitted limits.
• the driver is turning the steering wheel hard. •
the road's incline is very steep.
• the hood is opened.
• the transmission has not reached its normaloperating temperature.
• driving at high altitude and the engine hasnot reached its normal operating tempera-ture.
• the gear selector is in the manual shiftingposition.
• the ABS brakes have activated.
• hard braking (even if the ABS brakes havenot activated).
• many starts during a short time period havetriggered the starter motor's overheating pro-tection.
• a trailer's electrical system is connected tothe vehicle's electrical system.
The engine does not auto-startIn certain situations or conditions, the engine may not auto-start
after an auto-stop, such as:
• if the driver is not wearing a seat belt
• the gear selector is in the
P position and the
driver's door is open. The engine must be started normally.
The engine auto-starts while the brake pedal is depressed
In the following situations, the engine will auto-
start even though the brake pedal is depressed:

STARTING AND DRIVING
* Option/accessory.
388
Leveling control * and suspension
Self-leveling and suspension functions are con- trolled automatically.
Self-leveling controlThis function keeps the rear section of the vehi- cle level regardless of the load being transportedand also remains active for a certain period afterthe vehicle has been parked.
Active chassis (Four-C)This function regulates the characteristics of theshock absorbers according to the selected drivemode and the vehicle's speed. The default set-ting is for optimal comfort and is regulated con-tinuously depending on factors such as road sur-face, acceleration, braking and cornering.
Suspension settings
Deactivating suspension and leveling control
In certain situations, this function has to be turned off, for example when lifting the vehicle ona jack to help avoid problems created by the dif-ference in levels in the pneumatic suspensionwhen the vehicle is raised. 1. Tap
Settings in the center display's Top
view.
2. Tap
My CarSuspension .
3. Select
Deactivate Suspension & Leveling
Control.
Changing the suspension control level 8
Models equipped with the Four-C active chassis system but without the drive mode control
*, sus-
pension control is adjusted from the center dis- play. 1. Tap
Settings in Top view.
2. Tap
My CarDrive ModeSuspension
Control and select the desired level.
TransportWhen transporting the vehicle on a ferry, train or a tow truck, it may only be secured (lashed)around the tires, not using any other chassiscomponents. Changes in the pneumatic suspen-sion may occur during transport that could nega-tively affect the lashing and result in damage.
Related information
• Drive modes
* (p. 374)
• Driving with a trailer (p. 366)
• Loading (p. 202)
8
Depending on the equipment installed in the vehicle'

WHEELS AND TIRES
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455
CAUTION
•After inflating the tires, always reinstall the valve cap to help avoid damage to thevalve from dirt, gravel, etc.
• Use plastic valve caps only. Metal capscould corrode and become difficult toremove.
Related information
• Wheel bolts (p. 452)
• Jack (p. 450)
Tire Pressure Monitoring System (TPMS) TPMS provides a warning if inflation pressure in one or more tires is too low. It also uses a sym-bol (called a telltale) that will flash for60 seconds and then glow steadily if there is asystem malfunction.
TPMS uses the rotational speed of the tires in combination with signal analysis of the ABS sen-sor signals to determine if they are properly infla-ted. When a tire is under-inflated, its diameter(and consequently also its rotational speed)changes. By comparing the individual tires witheach other it is possible to determine if one ormore tires are under inflated. If inflation pressureis too low, an indicator symbol will illuminate inthe instrument panel and a text message will bedisplayed.
Symbol
Explanation
The symbol illuminates to indicate low tire inflation pressure. If a malfunction occurs in the sys- tem, the tire pressure warning sym-bol will flash for approximately1 minute and then remain illumi-nated.
Each tire, including the spare (if provided), should be checked monthly when cold and inflated to the inflation pressure recommended by the vehi-cle manufacturer on the vehicle placard or tireinflation pressure label. (If your vehicle has tiresof a different size than the size indicated on thevehicle placard or tire inflation pressure label, youshould determine the proper tire inflation pres-sure for those tires.) As an added safety feature, your vehicle has been equipped with a tire pressure monitoringsystem (TPMS) that illuminates a low tire pres-sure telltale when one or more of your tires issignificantly under-inflated. Accordingly, when thelow tire pressure telltale illuminates, you shouldstop and check your tires as soon as possible,and inflate them to the proper pressure. Driving on a significantly under-inflated tire cau- ses the tire to overheat and can lead to tire fail-ure. Under-inflation also reduces fuel efficiencyand tire tread life, and may affect the vehicle'shandling and stopping ability. Please note thatthe TPMS is not a substitute for proper tire main-tenance, and it is the driver's responsibility tomaintain correct tire pressure, even if under-infla-tion has not reached the level to trigger illumina-tion of the TPMS low tire pressure telltale. Your vehicle has also been equipped with a TPMS malfunction indicator to indicate when thesystem is not operating properly. The TPMS mal-function indicator is combined with the low tirepressure telltale.

MAINTENANCE AND SERVICING
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Keep in mind that a download can be cancelled but an installation that has already begun cannotbe interrupted.
Allowing background searches or
software updates
This function can be deactivated from the centerdisplay:
1. Go to the Settings in the center display's Top view and select
Download Center.
2. Tap
SystemDownload Center.
3. Tap to deselect
Auto Software Update.
If an update is available,
New software updates
available will appear in the center display's sta-
tus bar. Tap the message to start a download app in Home view's lower sub-view. As soon as the download app has started, an icon in the
System
updates button will indicate the number of
downloads available.
Related information
• Center display overview (p. 28)
• Navigating in the center display's views (p. 38)
Remote updates With the vehicle connected to the Internet, updates for a number of the vehicle's systemscan be downloaded from the center display.
The Download Center app is
started from the center dis- play's App view and makes itpossible to:
• search for and update system software
• update the Sensus Navigation maps
• download, update and uninstall apps
Related information
•Downloading, updating and uninstalling apps (p. 429)
• System updates (p. 470)
Vehicle status
The vehicle's general status can be displayed in the center display along with the possibility to book service 1
The Car status app is started
in the center display's App view and has three tabs:
•Messages: stored messages
•
Status: tire pressure and engine oil level
•
Appointments: booking service or repairs 1
Related information
•
Using the center display (p. 44)
• Booking service and repairs (p. 472)
• Checking and refilling engine oil (p. 506)
1
Certain markets only.

MAINTENANCE AND SERVICING
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Start battery
The vehicle's electrical system is single pole and uses the body and engine block as conductors. The start (main) battery is used to power the starter motor and other electrical componentsand systems. The start battery should only be replaced by a trained and qualified Volvo service technician.
The vehicle has an alternating current generator. The start battery is an Absorbed Glass Mat (AGM) 12-volt battery that is dimensioned foruse in vehicles to support electrical systems andfunctions and regenerative charging. The service life of a battery is affected by factors such as driving conditions/style, the number ofstarts, climate, etc. Extreme cold may also furtherdecrease the battery

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MAINTENANCE AND SERVICING
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WARNING
In certain models, the battery is held in place by a strap. Ensure that this strap is alwayssecurely fastened and pulled taut.
• When replacing the start battery or support battery an Absorbed Glass Mat (AGM) mustbe used.
• When replacing the start battery, a new bat-tery with the same specifications and dimen-sions must be used. The battery should onlybe replaced by a trained and qualified Volvoservice technician.
Related information
•
Jump starting (p. 364)
• Support battery (p. 478)
• Battery symbols (p. 479)
Support battery Vehicles equipped with Start/Stop are equipped with two 12-volt batteries.
In addition to a heavy-duty start battery, models with Start/Stop also have a support battery thatprovides extra current during the Start/Stopfunction's start sequence.
The support battery is located in a box next to the spring strut in the engine compartment
The following table shows the specifications for the support battery:
Current (V) 12 Cold start capacity (Cold Cranking Amperes -CCA) (A) 170
Dimensions, L×W×H in. (mm)5.9×3.5×5.1
(150×90×130)
Capacity (Ah) 10
• When replacing the start battery or support battery in a vehicle with Start/Stop, anAbsorbed Glass Mat (AGM) must be used.
• The greater the current consumption in thevehicle, the more the generator has to oper-ate and the battery is charged. This increasesfuel consumption.
• When the start battery's charge is below theminimum permitted level, the Start/Stopfunction will be disabled.
When the Start/Stop function is temporarily disa-bled due to high current consumption:
• The engine will auto-start, even if the brakepedal is depressed.
The support battery does not normally requiredmore service than the start battery. If questionsarise, consult a Volvo retailer or trained and quali-fied Volvo service technician.