2018 VOLVO S90 brakes

STARTING AND DRIVING
* Option/accessory.
418
Start/Stop function
Start/Stop is a function that temporarily switches off the engine when the vehicle has stopped,e.g. at a traffic light or in heavy traffic, and thenstarts it again automatically when the brakepedal is released.
The Start/Stop function reduces fuel consump- tion, which helps to reduce exhaust emissions. The system makes it possible to drive more eco- nomically and climate-smart by letting the engineauto-stop when appropriate.
Related information
• Driving with the Start/Stop function (p. 418)
• Conditions for the Start/Stop function(p. 420)
• Drive modes
* (p. 413)
Driving with the Start/Stop function
Start/Stop is a function that temporarily turns off the engine when the vehicle is stationary andthen automatically starts it again when the vehi-cle starts moving.
The Start/Stop function is available when the engine is started and can be activated if certainconditions are met. The instrument panel indi-cates if the function is available, active or notavailable. All of the vehicle's ordinary systems, such as lighting, radio, etc. function normally when theengine has been auto-stopped. Certain functionsmay be temporarily reduced, however, such asthe climate system's blower speed or extremelyhigh audio system volume.
Auto-stopTo auto-stop the engine:
• Stop the vehicle by applying the brakes andkeep the brake pedal depressed. The enginewill auto-stop.
In Eco or Comfort 5
drive mode, the engine may
auto-stop before the vehicle has completely stop-ped. With Adaptive Cruise Control or Pilot Assist acti- vated, the engine will auto-stop after approxi-mately three seconds.
Auto-startThe following conditions must be met for theengine to auto-start. • Release the brake pedal. The engine will auto-start and the vehicle can be driven. Onan uphill gradient, Hill Start Assist (HSA) willactivate to help prevent the vehicle from roll-ing backward.
• When Auto-hold is activated, auto-start willbe delayed until the accelerator is pressed.
• When Adaptive Cruise Control or Pilot Assistare activated, the engine will auto-start whenthe accelerator pedal is depressed or the
button on the left-side steering wheel
keypad is pressed.
• Maintain pressure on the brake pedal and press the accelerator pedal. The engine willauto-start.
• On a downhill gradient: Release the brakepedal slightly so that the vehicle begins toroll. The engine will auto-start after a slightincrease in speed.
5
Normal start mode.

STARTING AND DRIVING
* Option/accessory.419
Symbols in the instrument panel
12" instrument panel *
•READY
will be displayed in the tachometer
when Start/Stop is available.
• An indicator in the tachometer will point toward
READY when Start/Stop is active
and the engine has auto-stopped.
• READY
will be grayed-out when Start/Stop
is not available.
• No message will be shown when the func- tion is turned off.
The function is active and the engine has auto-stopped.
8" instrument panel
The symbol is displayed at the bottom of the speedometer.
SymbolMeaning
White symbol: the function is avail- able.
Beige symbol: The function is active and the engine has auto-stopped.
the function is not available because the conditions have notbeen met. No symbol will be shown when the function is turned off.
Related information
•Temporarily deactivating the Start/Stop func- tion (p. 419)
• Conditions for the Start/Stop function(p. 420)
• Start/Stop function (p. 418)
• Hill Start Assist (p. 406)
• Auto-hold brakes (p. 405)
Temporarily deactivating the Start/Stop function
In certain situations, it may be advisable to tem- porarily turn the Start/Stop function off.
To turn off Start/Stop, tap theStart/Stop function button in
the center display's Function view. The indicator light in thebutton will go out when thefunction has been turned off.
The function will remain turned off until:
• it is reactivated
• the drive mode is changed to Eco or Comfort
• the engine is restarted.
Related information
•
Driving with the Start/Stop function (p. 418)
• Conditions for the Start/Stop function (p. 420)

||
STARTING AND DRIVING
426
Slippery driving conditionsFor optimal traction and roadholding, Volvo rec- ommends using snow tires on all wheels when-ever there is a risk of snow or ice on the road.
NOTE
Certain countries require use of winter tires by law. Not all countries permit the use ofstudded tires.
Practice driving on slippery surfaces under con- trolled conditions to learn how the vehicle reacts.
Related information
•Snow tires (p. 529)
• Snow chains (p. 529)
• Braking on salted roads (p. 401)
• Braking on wet roads (p. 400)
• Filling washer fluid (p. 606)
• Start battery (p. 573)
• Replacing windshield wiper blades (p. 604)
• Refilling coolant (p. 562)
Driving through standing water
Driving the vehicle through a deep pool of stand- ing water on a water-covered roadway is calledfording. This must be done with great caution.
The vehicle can be driven through water up to a depth of 25 cm (9.8 in) at no more than walkingspeed. Be particularly careful when drivingthrough flowing water. When driving through standing water, drive slowly and do not stop the vehicle. When you havepassed the water, press lightly on the brake pedaland check that the brakes are functioning prop-erly. Water, mud, slush, etc. can make the brakelinings slippery, resulting in delayed brakingeffect.
• If the vehicle is equipped with contacts for anelectric heater or trailer coupling, clean theseafter driving in water or mud.
• Do not allow the vehicle to stand in water upto the sills any longer than absolutely neces-sary. This could result in electrical malfunc-tions.
CAUTION
• Engine damage could occur if water enters the air cleaner.
• If water enters the transmission, the lubri-cating ability of the oils is reduced andthe service life of these systems is short-ened.
• Damage to any component, engine,transmission, turbocharger, differential orits internal components caused by flood-ing, vapor lock or insufficient oil is notcovered under warranty.
• If the engine stalls while the vehicle is inwater, do not attempt to restart it. Havethe vehicle towed out of the water to aworkshop. An authorized Volvo workshopis recommended. Risk of engine failure.
Related information
• Recovery (p. 437)

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STARTING AND DRIVING
434
WARNING
•Batteries generate hydrogen gas, which is flammable and explosive.
• Do not connect the jumper cable to anypart of the fuel system or to any movingparts. Avoid touching hot manifolds.
• Battery fluid contains sulfuric acid. Do notallow battery fluid to contact eyes, skin,fabrics or painted surfaces.
• If contact occurs, flush the affected areaimmediately with water. Obtain medicalhelp immediately if eyes are affected.
• Never expose the battery to open flameor electric spark. Do not smoke near thebattery. Failure to follow the instructionsfor jump starting can lead to injury.
Related information
• Starting the vehicle (p. 394)
• Ignition modes (p. 397)
• Adjusting the steering wheel (p. 193)
• Selecting ignition mode (p. 398)
Towing using a towline
This section refers to one vehicle being towed behind another using a towline.
Before towing another vehicle, check applicable speed limit regulations.
Preparations and towing
CAUTION
Note that the vehicle must always be towed with the wheels rolling forward.
• Do not tow a vehicle with automatictransmission at a speed greater than80 km/h (50 mph) or for a distancegreater than 80 km (50 miles).
WARNING
•
Ignition mode
II must be active – all air-
bags are deactivated in ignition mode I.
• Always have the remote key in the vehicle when it is towed.
WARNING
The brake and steering servos do not work when the engine is off – it takesabout 5 times more pressure on the brakepedal and steering requires much more effortthan normal. 1. Turn on the hazard warning flashers.
2. Attach the towline to the towing eyelet.3.
Put the vehicle in ignition mode II – without
pressing the brake pedal, turn the start knob clockwise and hold it there for about4 seconds. Release the knob, which willautomatically return to its original position.
4. Move the gear selector to neutral ( N) and
release the parking brake. If the battery charge level is too low, it may not be possible to release the parking brake.Connect an auxiliary battery to the vehicle ifthe battery is discharged.
> The towing vehicle can now start driving.
5. Keep the towline taut when the towing vehi- cle slows down by applying light pressure to the brake pedal. This will help avoid jarringmovements.
6. Be prepared to apply the brakes to stop the vehicle.
Jump startingDo not tow the vehicle to start the engine. Use anauxiliary battery if the start battery's charge levelis so low that the engine cannot be started.

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WHEELS AND TIRES
530
CAUTION
Snow chains can be used on the vehicle, with the following restrictions:• Volvo recommends not using snowchains on wheel dimensions larger than18 inches.
• Always follow the manufacturer's installa-tion instructions carefully. Install chainsas tightly as possible and retighten peri-odically.
• Only put snow chains on the front wheels(also applies to all-wheel drive vehicles).
• If accessory, aftermarket or "custom"tires and wheels with different dimen-sions than the original tires and wheelsare used, snow chains in some casesmay NOT be used. Sufficient distancebetween the chains and brakes, suspen-sion and body components must bemaintained.
• Check local regulations regarding the useof snow chains before installing.
• Never exceed the snow chain manufac-turer's specified maximum speed limit.Under no circumstances should youexceed 50 km/h (30 mph).
• Avoid bumps, holes or sharp turns whendriving with snow chains.
• Avoid driving on surfaces without snow as this wears out both the snow chains andthe tires.
• The handling of the vehicle can beadversely affected when driving withchains. Avoid fast or sharp turns as wellas locked wheel braking.
• Some types of strap-on chains affectbrake components and therefore mustNOT be used.
Consult a Volvo retailer for more information about snow chains.
Related information
•
Winter driving (p. 425)
Tire sealing system12
The temporary tire sealing system can be used to seal a puncture in a tire or to check andadjust the pressure in the tire. Models equipped with a spare wheel 13
do not
have the tire sealing system.
The tire sealing system consists of a compressor and a bottle containing sealing compound. Thesealing functions as a temporary repair.
NOTE
The sealing compound effectively seals tires with punctures in the tread but may not beable to fully seal tires with punctures in thesidewall. Do not use the tire sealing systemon tires with large tears, cracks or similardamage.
NOTE
The compressor is intended for temporary tire sealing and is approved by Volvo.
LocationThe tire sealing system is located in a foam block under the floor of the trunk.

SPECIFICATIONS
616
Towing capacity and tongue weightTowing capacity and tongue weight are shown in the tables below.
Category
USA
(lbs)Canada(kg)
Max. trailer weights Without brakes: 1650 750 With brakes:
2000 900
Max. tongue weight 200 90
CAUTION
•The maximum trailer weights listed are only applicable for altitudes up to 3280 ft(1,000 m) above sea level. With increas-ing altitude the engine power and there-fore the car's climbing ability are impairedbecause of the reduced air density, sothe maximum trailer weight has to bereduced accordingly. The weight of thecar and trailer must be reduced by 10%for every further 3280 ft (1,000 m) (orpart thereof).
Related information
•
Type designations (p. 610)
• Weights (p. 615)

INDEX
623
1, 2, 3 ...
4WD 413
A
ABSanti-lock brakes 399
AC (Air conditioning) 224
ACC - Adaptive Cruise Control 284, 287, 288, 289, 290, 291, 293, 294, 295, 296, 298
Accessories and extra equipment 35 installation 36
Accessory installation warning 36
Active Bending Lights 157
Adapting driving characteristics 262, 413
Adaptive Cruise Control 284, 287, 288, 289, 290, 291, 293, 294, 295, 296, 298
change cruise control functionality 296
function 284
manage speed 288, 289
pass 293
radar sensor 315
set time interval 290, 291
troubleshooting 295
Adjusting the steering wheel 193
Airbag 52 activation/deactivation 56
driver's side 53
passenger side 53, 56
Air bag, see Airbag 52
Air conditioning 224Air conditioning, fluid volume and grade 620
Air distribution 201 air vents 201, 203
changing 202
defrosting 217
recirculation 216
table showing options 205
Air quality 199, 200 allergy and asthma 200
passenger compartment filter 201
Air recirculation 216
Alarm 257 deactivating 258
Allergy and asthma-inducing substances 200
All Wheel Drive, AWD 413
All Wheel Drive (AWD) 413
All Wheel Drive (four-wheel drive) 413
Android Auto 476, 478 Antenna location 247Apple CarPlay 473, 475
Approach lighting 160
Apps 445
Assistance at risk of collision 361, 362, 363, 364, 365, 366, 367, 369
Audio and media 444Audio system HD digital radio 455 SiriusXM ® Satellite radio 456, 457, 458
Auto-climate 215
Auto hold 405
Auto-hold brakes 405 activate and deactivate 406
after collision 407
Automatic car wash 598 Automatic engine stop auto-stop 418
Automatic high beam 155
Automatic locking 251
Automatic relocking 231, 244
Automatic Speed Limiter 271, 273, 274
Automatic transmission 408 kickdown 412
oil 619
INDEX

INDEX
624
B
Backrestfront seat, adjusting 184, 185, 188, 189 , 190
rear seat, adjusting 192
Battery jump-start 433
Maintenance 573
start 573
support 576
symbols on the battery 577
warning symbols 577
BLIS 337, 338, 339, 340 Blower adjusting 220, 221
air distribution 202
air vents 203
Bluetooth connect 471
connecting vehicle to Internet 489
phone 478
settings 487
Book service and repair 552
Booster cushions 71Brake assist after collision 407
Brake fluidgrade 619
Brake functions 398
Brake light 159
Brakes 399 anti-lock brakes, ABS 399
automatic when stationary 405
Brake Assist System, BAS 400
brake lights 159
brake system 398
emergency brake lights 159
handbrake 401
Maintenance 401
on salted roads 401
on wet roads 400
brake system fluid 619
C
Camera sensor 333
Camera unit 320
Capacity weight 536, 615
Cargo compartment 543
attachment points 545
Car wash 595, 596, 598, 599, 600, 601
Catalytic converter 431 recovery 434
CD player 469
Cell phone, see Phone 479
Center console 539Center display change appearance 129
cleaning 590
climate controls 208
Function view 120
keyboard 124
messages 138, 139, 140
operation 110, 113, 117, 122
overview 107
settings 130, 131, 132
switch off and change volume 129
symbols in status bar 122
views 113
Central locking 247
Change of owner 132
Changing a wheel 522
Checking engine oil level 561
Child restraints 63, 65 booster cushions 71
convertible seats 69
infant seats 67
ISOFIX/LATCH anchors 74
lower attachment points 73