wheel alignment VOLVO S90 2020 Quick Guide

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STARTING AND DRIVING
* Option/accessory.
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WARNING
Never turn off the engine while the vehicle is moving, e.g. when driving downhill. Thisdeactivates certain important systemssuch as power steering and brakes.
Other factors that decrease fuel consumption
Dirty air cleaner.
Dirty engine oil and clogged oil filter.
Incorrect front-end alignment.
Incorrect wheel alignment.
Some of the above items and others are checked as part of Volvo's standard mainte-nance schedule.
Related information
Drive-E
‒ purer driving pleasure (p. 28)
Eco drive mode (p. 401)
Checking tire pressure (p. 507)
Preparing for a long trip
It is important to have the vehicle's systems and equipment checked carefully before driv-ing long distances.
Check that
the engine is running properly and that fuel consumption is normal
there are no leaks (fuel, oil or other fluid)
the brake pedal is functioning properly
all lights are working
‒ adjust the head-
light height if the vehicle is carrying aheavy load
tire tread depth and air pressure are atcorrect levels. Change to snow tires whendriving in areas where there is a risk ofsnowy or icy roads
the start battery is sufficiently charged
the wiper blades are in good condition
Related information
Checking tire pressure (p. 507)
Filling washer fluid (p. 607)
Winter driving (p. 412)
Economical driving (p. 411)
Vehicle modem settings (p. 483)
Loading recommendations (p. 538)
Pilot Assist
* (p. 285)
Tire sealing system (p. 523)
Winter driving
It is important to check the vehicle before driving in cold/snowy conditions to makesure it can be driven safely.
Before the cold season arrives: Make sure the engine coolant contains 50% antifreeze. This mixture helps pro-tect the engine from frost erosion down toapprox. –35 °C (–31 °F). Do not mix dif-ferent types of antifreeze as this couldpose a health risk.
Keep the fuel tank well filled to preventcondensation from forming.
Check the viscosity of the engine oil. Oilwith low viscosity (thinner oil) improvescold-weather starting and reduces fuelconsumption when driving with a coldengine.
CAUTION
Low-viscosity oil should not be used with hard driving or in hot weather.
Check the condition and charge level of the start battery. Cold weather placesgreater demands on the start battery andreduces its capacity.
Use washer fluid containing antifreeze tohelp prevent ice from forming in thewasher fluid reservoir.

WHEELS AND TIRES
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Tires are perishable goods. After a few years, they will begin to harden and their frictionproperties will gradually deteriorate. Alwaysreplace tires with the freshest tires possible.This is particularly important for snow tires. Aseries of numbers is imprinted on the sidewallof the tire. The last four digits in the series isthe Department of Transportation (DOT)stamp and indicates the week and year thetire was manufactured. The tire in the illustra-tion has 0717 as the last four digits, whichmeans it was manufactured week 7 of 2017.
Tire ageTires degrade over time, even when they arenot being used. It is recommended that tiresgenerally be replaced after 6 years of normalservice. Heat caused by hot climates, frequenthigh loading conditions or Ultra Violet (U.V.)exposure can accelerate the aging process. The temporary spare
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should also be replaced
at 6-year intervals, even if it has never been used. A tire with e.g., visible cracks or discol-oration should be replaced immediately.
Tire economy
Maintain correct tire pressure.
Avoid fast starts, hard braking and tirescreeching.
Tire wear increases with speed.
Correct front wheel alignment is veryimportant.
Unbalanced wheels impair tire economyand driving comfort.
Tires must maintain the same direction ofrotation throughout their lifetime.
When replacing tires, the tires with themost tread should be mounted on the rearwheels to reduce the chance of oversteerduring hard braking.
Hitting curbs or potholes can damage thetires and/or wheels permanently.
Tire rotationYour vehicle has no required tire rotation. Driv-ing style, tire pressure, climate and road con-ditions affect how quickly the tires age andexhibit signs of wear. Maintaining the correcttire pressure helps keep tread wear evenly dis-tributed. To help prevent differences in tread depth and wear patterns forming on the tires, the frontand rear wheels should be rotated, i.e. thefront tires moved to the rear and the rear tiresmoved to the front. Ideally, tire rotation shouldbe done the first time after approximately5000 km (ca 3100 miles) and thereafter at10,000 km (approx. 6200 miles) intervals. If you have any questions regarding tread depth, Volvo recommends consulting an authorized Volvo workshop. If significant dif-ferences in wear (> 1 mm difference in treaddepth) between the tires have already occur-red, the least worn tires should always bemounted on the rear wheels. A front-wheelskid (understeer) is usually easier to controlthan a rear-wheel skid (oversteer). If the frontwheels skid, the vehicle will continue in astraight line instead of the rear wheels skid-ding to the side, which could cause you tocompletely lose control of the vehicle. It istherefore important that the rear wheels neverlose grip before the front wheels.
Storing wheels and tiresWhen storing complete wheels (tires mountedon rims), they should be suspended off thefloor or placed on their sides on the floor. Tires not mounted on rims should be stored on their sides or standing upright, but should notbe suspended.
CAUTION
Tires should preferably be stored in a cool, dry, dark place, and should never be storedin close proximity to solvents, gasoline,oils, etc.
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Not available on all models.