trailer VOLVO S90 TWIN ENGINE 2019 Owner's Manual

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STARTING AND DRIVING
464

WARNING
Carbon monoxide is a poisonous, colorless,and odorless gas. It is present in all exhaustgases. If you ever smell exhaust fumes insidethe vehicle, make sure the passenger com-partment is ventilated, and immediately returnthe vehicle to a trained and qualified Volvoservice technician for correction.

Demanding driving
In demanding driving conditions, such as whentowing a trailer or driving in hot weather or forprolonged periods at high altitudes, it may be a
good idea to switch to a higher-octane fuel (AKI5
91 or higher) or to switch to another brand ofgasoline in order to fully utilize the vehicle'sengine capacity and optimize traction.

Related information
Fuel (p. 461)
Emission controls (p. 464)
Emission controls
Three-way catalytic converter
Keep your engine properly tuned. Certainengine malfunctions, particularly involving theelectrical, fuel or distributor ignition systems,may cause unusually high three-way catalyticconverter temperatures. Do not continue tooperate your vehicle if you detect enginemisfire, noticeable loss of power or otherunusual operating conditions, such as engineoverheating or backfiring. A properly tunedengine will help avoid malfunctions thatcould damage the three-way catalytic con-verter.
Do not park your vehicle over combustiblematerials, such as grass or leaves, which cancome into contact with the hot exhaust sys-tem and cause such materials to ignite undercertain wind and weather conditions.
Excessive starter cranking (in excess of oneminute), or an intermittently firing or floodedengine can cause three-way catalytic con-verter or exhaust system overheating.
Remember that tampering or unauthorizedmodifications to the engine, the Engine Con-trol Module, or the vehicle may be illegal andcan cause three-way catalytic converter orexhaust system overheating. This includes:altering fuel injection settings or compo-nents, altering emission system components
or location or removing components, and/orrepeated use of leaded fuel.

NOTE
Unleaded fuel is required for vehicles withthree-way catalytic converters.

Heated oxygen sensors
The heated oxygen sensors monitor the oxygencontent of the exhaust gases. Readings are fedinto a control module that continuously monitorsengine functions and controls fuel injection. Theratio of fuel to air into the engine is continuouslyadjusted for efficient combustion to help reduceharmful emissions.

Related information
Octane rating (p. 462)
Fuel (p. 461)
5AKI (Anti Knock Index) is an average value of RON (Research Octane Number) and MON (Motor Octane Number) - (RON)+(MON)/2

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WHEELS AND TIRES
570

Related information
Recommended tire pressure (p. 551)
Using the tire sealing system (p. 565)
Tire sealing system (p. 564)
Determining the vehicle's permittedweight
Properly loading your vehicle will provide maxi-mum return of vehicle design performance.

Weight designations
Before loading your vehicle, familiarize yourselfwith the following terms for determining yourvehicle's weight ratings, with or without a trailer,from the vehicle's Federal/Canadian Motor Vehi-cle Safety Standards (FMVSS/CMVSS) label, andthe vehicle's tire information placard:

Curb weight
The weight of the vehicle including a full tank offuel and all standard equipment. It does notinclude passengers, cargo, or optional equipment.

Capacity weight
All weight added to the curb weight, includingcargo and optional equipment. When towing, tow-bar weight is also part of cargo weight.

Permissible axle weight
The maximum allowable weight that can be car-ried by a single axle (front or rear). These num-bers are shown on the Federal/Canadian MotorVehicle Safety Standards (FMVSS/CMVSS) label.The total load on each axle must never exceed itsmaximum permissible weight.

Gross vehicle weight (GVW)
The vehicle's curb weight + cargo + passengers.
Steps for Determining Correct Load
Limit
1. Locate the statement "the combined weightof occupants and cargo should never exceedXXX kg or XXX lbs." on your vehicle's plac-ard.
2. Determine the combined weight of the driverand passengers that will be riding in yourvehicle.
3. Subtract the combined weight of the driverand passengers from XXX kg or XXX lbs.
4. The resulting figure equals the availableamount of cargo and luggage load capacity.For example, if the "XXX" amount equals1400 lbs. and there will be five 150 lb. pas-sengers in your vehicle, the amount of availa-ble cargo and luggage load capacity is 650lbs. (1400 - 750 (5 × 150) = 650 lbs.)
5. Determine the combined weight of luggageand cargo being loaded on the vehicle. Thatweight may not safely exceed the availablecargo and luggage load capacity calculatedin Step 4.
6. If your vehicle will be towing a trailer, loadfrom your trailer will be transferred to yourvehicle. Consult this manual to determinehow this reduces the available cargo and lug-gage load capacity of your vehicle.

SPECIFICATIONS
644
Towing capacity and tongue weightTowing capacity and tongue weight are shownin the tables below.
CategoryUSA
(lbs)
Canada
(kg)
Max. trailer weightsWithout brakes:1650750
With brakes:2000900
Max. tongue weight20090

CAUTION
The maximum trailer weights listed areonly 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. 638)
Weights (p. 643)

INDEX
654
Crash event data 33
Cross Traffic Alert – CTA 352, 353, 354, 355
Cruise control 283, 284
manage speed 284, 285
temporary deactivation 286, 287
turn off 288
CTA – Cross Traffic Alert 352, 353, 354, 355
Curb weight 643
Customer Privacy Policy 35
CZIP (Clean Zone Interior Package) 199
D
Data
recording33
transferring between vehicle and work-
shop586
Data sharing530
Daytime running lights150
Decals
location638
Defrosting215
Detection of cyclist337
Dimensions641
Dipstick, electronic598
Direction of rotation544
Display
driver information80
Display lighting159
Distance Alert288, 289, 290
limitations291
DivX®505
Door mirrors167, 169
compass474, 475
dimming168
outer167, 169
power folding169
resetting169
store position182, 183
Driveline
transmission440
Drive mode446
changing449
Driver Alert Control362
operation363, 364
Driver Alert Control limitations364
Driver performance88, 89
Driver profile132
edit133, 134, 135
select133
Driver support system270
Drive systems444
Driving
cooling system465
Driving economy453
Driving through standing water 458
driving with a trailer
towball load 644
towing capacity 644
E
Economical driving453
Electrical outlet575
use576
Electrical system601
Electric drive motor
specifications 645
electric motor 444
Driving 454
Range 455
Electric parking brake 434
Electronic immobilizer 250
emergency brake lights 156
Emission inspection readiness 584
Energy distribution
using map data 450