VOLVO S90 TWIN ENGINE 2020 Workshop Manual

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2. Buckle the seat belt by pushing the latch
plate into the receptacle.
> A distinct "click" indicates that the beltis locked into place.
WARNING
Always insert the seat belt latch plate into the belt buckle on the correct side. Failureto do so could cause the seat belts and beltbuckles to malfunction in a collision. Thereis a risk of serious injury. 3. The height of the seat belts in the front
seats can be adjusted.
Press the button on the seat belt holder and move the belt up or down. Position the belt as high as possible with- out it chafing against the neck.
The belt should be positioned closely over the shoul- der (against the collarbone, not down over the arm).
4. Tighten the lap section of the seat beltover the hips by pulling the diagonal sec- tion upward toward the shoulder.
The lap section of the seat belt should be positioned low on the hips (not against the abdomen).

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WARNING
Never use a seat belt for more than one occupant. Never wear the shoulder portionof the belt under the arm, behind the backor otherwise out of position. Such usecould cause injury in the event of an acci-dent. As seat belts lose much of theirstrength when exposed to violent stretch-ing, they should be replaced after any colli-sion, even if they appear to be undamaged.
WARNING
Do not use clips or fasten the belts around hooks or other parts of the interior. This willprevent the seat belt from fitting properly.
WARNING
Never damage the seat belts and never insert any foreign objects into the beltbuckle. This may cause the seat belts andbelt buckles to malfunction in a collision.There is a risk of serious injury.
Unbuckling seat belts1. Press the red button on the seat beltreceptacle and make sure the seat belt retracts fully into the retractor slot.
2. If it does not fully retract, guide the belt manually into the slot and make sure itdoes not hang loose.
Related information
Seat belts (p. 47)
Seat belt tensioners (p. 50)
Door and seat belt reminders (p. 51)
Seat belt tensioners The vehicle is equipped with standard and electric seat belt tensioners that can help ten-sion the seat belt in a critical situation or colli-sion.
Standard seat belt tensionersAll seat belts are equipped with a standard seat belt tensioner. In a collision of sufficiently violent force, the seat belt tensioners will tension the seat beltsin order to more effectively restrain the occu-pants.
Electric seat belt tensionersThe driver's and front passenger's seat beltsare equipped with electric seat belt tensioners. The seat belt tensioners interact and can be activated in conjunction with the City Safetyand Rear Collision Warning driver support sys-tems. In critical situations, such as if the vehi-cle brakes suddenly, begins to skid or runs offthe road (e.g if the vehicle rolls into a ditch,lifts off the ground or hits an obstacle in theroad), or if there is a risk of collision, the seatbelts can be pulled taut by the seat belt ten-sioner's electric motor. The electric seat belt tensioner helps to posi- tion the occupant more effectively in the seat,which reduces the risk of the occupant strik-ing the interior of the passenger compartment

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* Option/accessory.51
and improves the effect of other safety sys- tems such as the airbags. When a critical situation has passed, the seat belt and the electric seat belt tensioner arereset automatically. However, they can also bereset manually.
WARNING
Never attempt to alter or repair the seat belt on your own. Volvo recommends con-tacting an authorized Volvo workshop. If the seat belt has been exposed to extreme forces, e.g. in conjunction with acollision, the entire seat belt must bereplaced. Even if the seat belt appearsundamaged, some of its protective proper-ties may have been lost. Also replace theseat belt if it is worn or damaged. The newseat belt must be type approved andintended for the same seating position asthe replaced seat belt.
Related information

Seat belts (p. 47)
Buckling and unbuckling seat belts (p. 48)
Resetting the electric seat belt tensioners (p. 51)
City Safety
™ (p. 314)
Rear Collision Warning
* (p. 328)
Resetting the electric seat belt tensioners
The electric seat belt tensioners are designed to be reset automatically, but if the seat beltremains taut it can be reset manually.
1. Stop the vehicle in a safe location.
2. Unbuckle the seat belt and then rebuckle it.
> The seat belt and the electric seat belttensioner will be reset.
WARNING
Never attempt to alter or repair the seat belt on your own. Volvo recommends con-tacting an authorized Volvo workshop. If the seat belt has been exposed to extreme forces, e.g. in conjunction with acollision, the entire seat belt must bereplaced. Even if the seat belt appearsundamaged, some of its protective proper-ties may have been lost. Also replace theseat belt if it is worn or damaged. The newseat belt must be type approved andintended for the same seating position asthe replaced seat belt.
Related information
Seat belt tensioners (p. 50)
Seat belts (p. 47)
Door and seat belt reminders
This system is intended to remind occupants to buckle their seat belts and to alert thedriver if a door, hood or other opening (trunk,sunroof, etc.) is open.
Graphics in the instrument panel
Graphics in the instrument panel with various types of warnings. The warning colors for the doors/trunklid vary depending on the vehicle's speed.
The instrument panel graphic shows the seats where seat belts are buckled and not buckled. The same graphic also indicates if the hood, trunk lid, fuel filler door or any door is open. Confirm the graphic by briefly pressing the O
button on the right-side steering wheel key- pad.

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Seat belt reminder
Reminder light in ceiling console.
A seat belt reminder light illuminates in the ceiling console and a warning symbol is dis-played in the instrument panel. The audible reminder varies depending on the vehicle's speed, driving time and distancedriven. A seat belt status graphic in the instrument panel indicates when the driver's or a pas-senger's seat belt is buckled or unbuckled. Child seats are not included in the seat belt reminder system.
Front seats
An audible signal and an indicator light remind unbuckled occupants to fasten their seatbelts.
Rear seat
The rear seat belt reminder has two functions:
To indicate which seat belts are buckled in the rear seats. This will also be displayedin an instrument panel graphic.
To provide audio and visual reminders ifany seat belt in the rear seat is removedwhile the vehicle is in motion. Thereminder will stop when the seat belt hasbeen rebuckled.
An audible signal and an indicator light whenthe rear door is closed remind unbuckledoccupants behind the vehicle's Lounge Console 1
to fasten their seat belts.
Door/hood/trunk lid and fuel filler door
reminder
If the hood, trunk lid, fuel filler door or any door is not properly closed, this will be indi-cated by a graphic in the instrument panel.Stop the vehicle safely and close the opendoor, hood, etc.
If the vehicle is moving at a speedunder approx. 10 km/h (6 mph), theinformation symbol will illuminate inthe instrument panel.
If the vehicle is moving at a speed above approx. 10 km/h (6 mph), thewarning symbol will illuminate in theinstrument panel.
Related information
Seat belts (p. 47)
Buckling and unbuckling seat belts (p. 48)
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S90 Excellence Lounge only.

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Airbags
The vehicle is equipped with airbags and inflatable curtains for the driver and passen-gers.
WARNING
If the airbag warning light stays on after the engine has started or if it illu-minates while you are driving, have thevehicle inspected by a trained andqualified Volvo service technician assoon as possible.
Never attempt to alter or repair any ofthe vehicle's safety systems yourself.Incorrectly performed repairs to anysystem could impair function and leadto serious injury. All work on these sys-tems should be performed by a trainedand qualified Volvo service technician.
WARNING
If your vehicle has become water-damaged in any way (e.g., soaked floor mats/stand-ing water on the floor of the vehicle), donot attempt to start the engine. This maycause airbag deployment, which couldresult in serious injury. Volvo recommendstowing the vehicle directly to an authorizedVolvo workshop. Before attempting to tow the vehicle:
1. Switch off the ignition for at least 10
minutes and disconnect the battery.
2. Follow the instructions for manually overriding the shiftlock system.
Deployed airbags
WARNING
If any of the airbags have deployed:
Do not attempt to drive the vehicle. Have it towed to an authorized work-shop.
If necessary, seek medical attention.
Related information

Safety (p. 42)
Driver/passenger-side airbags (p. 53)
Side airbags (p. 60)
Inflatable curtain (p. 61)
Driver/passenger-side airbags 2
As a supplement to the seat belts, the vehicle is equipped with driver and passenger sidefront airbags.
Driver/passenger side front airbags.
In a frontal collision, the airbags help protect the driver's and passenger's head, neck, faceand chest and the driver's knees and legs. A collision of a sufficiently violent force will trigger the sensors and one or more airbagswill inflate. The airbag helps cushion the initialimpact of the collision for the passenger. Theairbag deflates when compressed by the colli-sion. A small amount of powder will also bereleased from the airbag. This may appear tobe smoke and is normal. The entire process, from inflation to deflation of the airbag, occurs within tenths of a second.

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NOTE
The sensors react differently depending on the circumstances of the accident andwhether or not the seat belt is used. Thisapplies to all belt positions. There may therefore be accident situations in which only one (or none) of the airbagsare deployed. The sensors monitor theimpact of the collision and react accord-ingly to deploy one, several or no airbags.
WARNING
The seat belt and the airbag work together. If the seat belt is not used or is used incor-rectly, the airbag may not provide theintended protection in a collision. To help prevent injury in the event the air- bag is deployed, passengers should sit asupright as possible, with their feet on thefloor and their backs against the seat back-rest.
WARNING
Volvo recommends contacting an author- ized Volvo workshop for repairs. Incorrectlyperformed repairs to the airbag systemcould impair function and lead to seriousinjury.
The front airbag systemThe front airbag system includes gas genera- tors surrounded by the airbags, and decelera-tion sensors that activate the gas generators,causing the airbags to be inflated with nitro-gen gas. As the movement of the seats' occupants compresses the airbags, some of the gas isexpelled at a controlled rate to provide bettercushioning. The belt tensioners minimize slackin the seat belts and are activated for occu-pants wearing their seat belts. The entire proc-ess, from inflation to deflation of the airbag,occurs within tenths of a second. The location of the front airbags is indicated by SRS AIRBAG embossed on the steering
wheel pad and above the glove compartment,and by decals on both sun visors and on thefront and far right side of the dash. The driver's side front airbag is folded and
located in the steering wheel hub.The knee airbag is folded on the underside of
the dashboard on the driver's side. The text AIRBAG is embossed on the panel.
The passenger's side front airbag is folded
behind a panel located above the glove com-partment.WARNING
The airbags in the vehicle are designed to be a SUPPLEMENT to-not areplacement for-the three-point seatbelts. For maximum protection, wearseat belts at all times. Be aware that nosystem can prevent all possible injuriesthat may occur in an accident.
Never drive with your hands on thesteering wheel pad/airbag housing.
The front airbags are designed to helpprevent serious injury. Deploymentoccurs very quickly and with considera-ble force. During normal deploymentand depending on variables such asseating position, one may experienceabrasions, bruises, swellings, or otherinjuries as a result of deployment ofone or both of the airbags.
When installing any accessory equip-ment, make sure that the front airbagsystem is not damaged. Any interfer-ence in the system could cause mal-function.
Front airbag deployment
The front airbags are designed to deployduring certain frontal or front-angular colli-sions, impacts, or decelerations, depend-
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S90 Excellence Lounge does not have passenger airbags.

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ing on the crash severity, angle, speed and object impacted. The airbags may alsodeploy in certain non-frontal collisionswhere rapid deceleration occurs.
The airbag system's sensors, which triggerthe front airbags, are designed to deter-mine if the collision is powerful enough toactivate the belt tensioners and/or the air-bags.
However, not all frontal collisions activate thefront airbags. If the collision involves a nonrigid object (e.g., a snow drift or bush), or a rigid, fixedobject at a low speed, the front airbagswill not necessarily deploy.
Front airbags do not normally deploy in aside impact collision, in a collision fromthe rear or in a rollover situation.
The amount of damage to the bodyworkdoes not reliably indicate if the airbagsshould have deployed or not.
NOTE
Deployment of front airbags occurs only one time during an accident. In acollision where deployment occurs, theairbags and seat belt tensioners acti-vate. Some noise occurs and a smallamount of powder is released. Therelease of the powder may appear assmoke-like matter. This is a normalcharacteristic and does not indicatefire.
Volvo's front airbags use special sen-sors that are integrated with the frontseat buckles. The point at which theairbag deploys is determined bywhether or not the seat belt is beingused, as well as the severity of the col-lision.
Collisions can occur where only one ofthe airbags deploys. If the impact isless severe, but severe enough to pres-ent a clear injury risk, the airbags aretriggered at partial capacity. If theimpact is more severe, the airbags aretriggered at full capacity.
WARNING
Do not use child safety seats or child booster cushions/backrests in the frontpassenger's seat. We also recommendthat occupants under 140 cm (4 feet7 inches) in height who have outgrownthese devices sit in the rear seat withthe seat belt fastened. See also theOccupant Weight Sensor information.
Never drive with the airbags deployed.The fact that they hang out can impairthe steering of your vehicle. Othersafety systems can also be damaged.
The smoke and dust formed when theairbags are deployed can cause skinand eye irritation in the event of pro-longed exposure.
Should you have questions about any compo-nent in the SRS system, please contact atrained and qualified Volvo service technicianor Volvo customer support: In the United StatesVolvo Car USA, LLCCustomer Care Center 1 Volvo Drive P.O. Box 914Rockleigh, New Jersey 07647

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561-800-458-1552 www.volvocars.com/us In Canada Volvo Car Canada Ltd.Customer Care Centre9130 Leslie Street, Suite 101Richmond Hill, Ontario L4B 0B91-800-663-8255www.volvocars.com/ca
Airbag decals
Airbag decal on the outside of both sun visors.
Passenger's side airbag decal.
WARNING

Children must never be allowed in the front passenger's seat.
Occupants in the front passenger'sseat must never sit on the edge of theseat, sit leaning toward the instrumentpanel or otherwise sit out of position.
The occupant's back must be asupright as comfort allows and beagainst the seat back with the seat beltproperly fastened.
Feet must be on the floor, e.g., not onthe dash, seat or out of the window.
WARNING
No objects or accessory equipment, e.g. dashboard covers, may be placedon, attached to, or installed near the airbag cover (the area above the glovecompartment) or the area affected byairbag deployment.
There should be no loose articles, suchas coffee cups on the floor, seat, ordashboard area.
Never try to open the airbag cover onthe steering wheel or the passenger'sside dashboard. This should only bedone by a trained and qualified Volvoservice technician.
Failure to follow these instructions canresult in injury to the vehicle's occu-pants.
Related information
Airbags (p. 53)
Occupant weight sensor (p. 57)

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Occupant weight sensor
The Occupant Weight Sensor (OWS) is designed to meet the regulatory require-ments of Federal Motor Vehicle SafetyStandard (FMVSS) 208 and is designed todisable (will not inflate) the passenger's sidefront airbag under certain conditions.
Occupant Weight Sensor (OWS) indicator light
Disabling the passenger's side front airbag
Volvo recommends that ALL occupants (adults and children) shorter than 140 cm(4 feet 7 inches) be seated in the back seat ofany vehicle with a front passenger side airbagand be properly restrained for their size andweight. The OWS works with sensors that are part of the front passenger's seat and seat belt. Thesensors are designed to detect the presence of a properly seated occupant and determine ifthe passenger's side front airbag should beenabled (may inflate) or disabled (will notinflate). The OWS will disable (will not inflate) the pas- senger's side front airbag when:
the front passenger's seat is unoccupied,or has small/medium objects in the frontseat,
the system determines that an infant ispresent in a rear-facing infant seat that isinstalled according to the manufacturer'sinstructions,
the system determines that a small child ispresent in a forward-facing child restraintthat is installed according to the manufac-turer's instructions,
the system determines that a small child ispresent in a booster seat,
a front passenger takes his/her weight offof the seat for a period of time,
a child or a small person occupies thefront passenger's seat.
The OWS uses a PASSENGER AIRBAG OFFindicator lamp which will illuminate and stayon to remind you that the passenger's sidefront airbag is disabled. The PASSENGERAIRBAG OFF indicator lamp is located in theoverhead console, near the base of the rear-view mirror.
NOTE
When the ignition is switched on, the OWS indicator light will illuminate for sev-eral seconds while the system performs aself-diagnostic test.
However, if a fault is detected in the system:
The OWS indicator light will stay on.
The SRS warning light will come on and stay on and a text message will be dis-played.
WARNING
If a fault in the system is detected and indi- cated as described, be aware that the pas-senger's side front airbag will not deploy inthe event of a collision. In this case, theSRS system and Occupant Weight Sensorshould be inspected by a trained and quali-fied Volvo service technician as soon aspossible.

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WARNING
Never try to open, remove or repair any components in the OWS system. Thiscould cause the system to malfunction.Maintenance or repairs should only becarried out by an a trained and qualifiedVolvo service technician.
The front passenger's seat should notbe modified in any way. This couldreduce pressure on the seat cushion,which might interfere with the OWSsystem's function.
Passeng- er's seatoccupancystatus OWS indi-cator lightstatus
Passenger'sside frontairbag sta-tus
Seat unoccu- pied OWS indi-cator lightlights upPassenger'sside front air-bag disabled
Seat occu-pied by lowweight occu- pant/object AOWS indi-
cator light lights up Passenger'sside front air-
bag disabled
Seat occu- pied byheavy occu-
pant/object OWS indi-
cator lightis not lit Passenger'sside front air-bag enabled
A
Volvo recommends that children always be properly restrained in appropriate child restraints in the rear seats.Do not assume that the passenger's side front airbag is dis-abled unless the PASSENGER AIRBAG OFF indicator lampis lit. Make sure the child restraint is properly installed. Ifthere is any doubt as to the status of the passenger's sidefront airbag, move the child restraint to the rear seat.
The OWS is designed to enable (may inflate) the passenger's side front airbag in the eventof a collision anytime the system senses that aperson of adult size is sitting properly in thefront passenger's seat. The PASSENGER AIR-BAG OFF indicator lamp will be off andremain off. If a person of adult size is sitting in the front passenger's seat, but the PASSENGER AIR- BAG OFF indicator lamp is on, it is possiblethat the person isn't sitting properly in theseat. If this happens:
Turn the vehicle off and ask the person toplace the backrest in an upright position.
Have the person sit upright in the seat,centered on the seat cushion, with theperson's legs comfortably extended.
Restart the vehicle and have the personremain in this position for about twominutes. This will allow the system todetect that person and enable the pas-senger's frontal airbag.
If the PASSENGER AIRBAG OFF indica-tor lamp remains on even after this, theperson should be advised to ride in therear seat.
This indicates limitations in OWS classifica-tion capability. It does not indicate OWS mal-function.ModificationsIf you are considering modifying your vehiclein any way to accommodate a disability, forexample by altering or adapting the driver's orfront passenger's seat(s) and/or airbag sys-tems, please contact Volvo at: In the United StatesVolvo Car USA, LLCCustomer Care Center