ECU VOLVO S90 TWIN ENGINE 2020 Service Manual

LOADING, STORAGE AND PASSENGER COMPARTMENT
* Option/accessory.
558
Cargo compartment
Loads can be secured in the trunk to keep them in place while driving.
The folding * rear seat backrests can help
increase the cargo capacity of the trunk. Load anchoring eyelets and grocery bag holders areprovided to help secure objects in place. If the vehicle is equipped with a temporary spare tire, this is secured to the cargo com-partment floor under the cover. The towingeyelet and tire sealing system are locatedunder the cargo compartment floor.
Related information
Loading recommendations (p. 558)
Grocery bag holders (p. 560)
Load anchoring eyelets (p. 560)
Loading recommendations
There are a number of things that are impor- tant to consider when carrying loads in or onthe vehicle.
Load-carrying capacity is determined by the vehicle's curb weight. The total weight of allpassengers and any installed accessoriesreduces the vehicle's load-carrying capacity bythe corresponding amount.
WARNING
The vehicle's driving characteristics change depending on the weight and position ofthe load.
Loading the cargo compartment/trunkKeep the following in mind when loading:
Position objects so they are pressing against the rear seat backrests.
Heavy objects should be positioned as lowas possible. Avoid placing heavy objectson folded-down seat backrests.
Cover sharp corners with a soft cloth orsimilar to help prevent damage to theupholstery.
Use the load anchoring eyelets and ten-sioning straps or similar to secure allobjects.
WARNING
In a head-on collision at a speed of 50 km/h (30 mph), an unsecured objectweighing 20 kg (44 pounds) can reach aprojectile weight equivalent to 1000 kg(2200 pounds).
WARNING
If objects are loaded higher than the upper edge of the side windows, leave a 10 cm(4 in.) space between the objects and thewindow. Objects placed closer to thiscould impede the function of the inflatablecurtain concealed inside the headlining.
WARNING
Always secure the load. Otherwise, it may shift during heavy braking and injure peo-ple in the vehicle. Cover sharp edges and sharp corners with something soft. Turn off the engine and apply the parking brake when loading/unloading longobjects. Otherwise, it is possible for theload to reach the gear lever or gear selectorand move it to a drive position – whichcould cause the vehicle to begin rolling.

LOADING, STORAGE AND PASSENGER COMPARTMENT
* Option/accessory.559
Extra cargo space
The rear seat backrests can be folded down *
to increase cargo space in the cargo compart- ment/trunk and simplify loading. If the rearseat backrests are folded down, make surethat no objects loaded into the vehicle preventthe WHIPS system for the front seats fromfunctioning correctly. The ski hatch *1
in the rear seat can be folded
down to carry skis or other long, thin objects.
Related information
Load anchoring eyelets (p. 560)
Rear seat ski hatch
* (p. 560)
Roof loads and load carriers (p. 559)
Leveling control
* and suspension (p. 425)
Weights (p. 629)
Roof loads and load carriers
Volvo-developed load carriers are recom- mended for carrying loads on the roof of thevehicle.
Volvo load carriers are specially designed to help prevent damage to your vehicle and helpensure maximum safety while driving. Volvoload carriers are available from authorizedVolvo retailers. Carefully follow the installation instructions provided with the load carriers. Distribute the load evenly throughout the load carriers. Place heavier cargo at thebottom of the load.
Check periodically to ensure that the loadcarriers and load are properly secured.Secure the load firmly using tie straps orsimilar.
If the load is longer than the vehicle, suchas a canoe or kayak, attach the towingeyelet in its front outlet and secure the tiestraps in it.
The vehicle's wind resistance and fuelconsumption increase with the size of theload.
Drive smoothly. Avoid rapid acceleration,hard braking and fast cornering.
WARNING
The vehicle's center of gravity and driving characteristics are altered by roof loads. Follow the vehicle's specifications regar- ding weights and maximum permittedload.
Related information
Loading recommendations (p. 558)
Weights (p. 629)
1
Not available for the S90 Excellence.

LOADING, STORAGE AND PASSENGER COMPARTMENT
* Option/accessory.
560
Grocery bag holders Grocery bag holders (hooks) help keep shop- ping bags in place and prevent them fromfalling over and spilling their contents in thecargo compartment.
On the sides of the cargo compartment
There is a grocery bag holder in the side panel on each side of the cargo compartment.
CAUTION
The grocery bag holders are only intended to hold weights up to 5 kg (11 lbs).
Related information
Loading recommendations (p. 558)
Using the glove compartment (p. 555)
Load anchoring eyelets The load anchoring eyelets in the cargo com- partment can be used to secure objects withstraps, a net, etc.
WARNING
Hard, sharp and/or heavy objects in or pro- truding from the vehicle can cause injury inthe event of hard braking. Always secure large and heavy objects with a seat belt or cargo retaining straps.
Related information
Loading recommendations (p. 558)
Weights (p. 629)
Rear seat ski hatch
*2
The hatch in the rear seat backrest can be
opened to transport long, narrow objects such as skis.
The illustration is generic - details may vary accord- ing to vehicle model.
1. In the cargo compartment, grasp the ski hatch handle and pull it down.
2. Fold down the armrest in the rear seat. If the private locking function is used, the ski hatch must be closed.
Related information
Loading recommendations (p. 558)
Private Locking (p. 262)
Load anchoring eyelets (p. 560)
2
Not available for the S90 Excellence.

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MAINTENANCE AND SERVICE
572
Turn the handle under the front edge of the hood counterclockwise to release thecatch and lift the hood.
Warning - hood not closedWhen the hood is released, a warn-ing symbol and graphic will be dis-played in the instrument panel andan audible signal will sound. If the
vehicle begins to roll, the audible signal will berepeated several times.
NOTE
If the warning symbol is illuminated or an audible warning signal sounds even thoughthe hood is securely closed, consult aworkshop - an authorized Volvo workshopis recommended.
Closing the hood1. Press down the hood until it begins to close under its own weight.
2. When the hood reaches the catch at the handle in the front edge of the vehicle, press down on the hood to close it com-pletely.
WARNING
Risk of injury! When closing, make sure that the hood is completely unobstructedand that no one can be injured.
WARNING
Make sure the hood locks securely after closing. It must audibly lock on both sides.
Hood not completely closed.
Hood completely closed.
WARNING
Never drive with the hood open! If this symbol appears, or anything else indicatesthat the hood is not com-pletely closed while driv-ing, stop immediately and
close it properly.
Related information
Engine compartment overview (p. 573)
Door and seat belt reminders (p. 51)

MAINTENANCE AND SERVICE
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579
Start battery
The vehicle has a single-pole electrical sys- tem that uses the chassis and engine mountas conductors. The start battery is used to start the electrical system and power electrical equipment in thevehicle. The hybrid battery is used to start thecombustion engine. The start battery should only be replaced by a workshop 17
.
The start battery is a 12 V AGM (Absorbed Glass Mat) battery, dimensioned for regenera-tive charging and to support the function ofthe vehicle's various systems. The service life and performance of the start battery are affected by factors such as drivingstyle, driving conditions, climate, battery dis-charges, number of starts, etc. Never disconnect the start battery while the engine is running.
Make sure the cables to the start batteryare correctly connected and the clampsare securely tightened.
WARNING
Batteries generate hydrogen gas, which is flammable and explosive.
Do not connect the jumper cable toany part of the fuel system or to anymoving parts. Avoid touching hotmanifolds.
Battery fluid contains sulfuric acid. Donot allow battery fluid to contact eyes,skin, fabrics or painted surfaces.
If contact occurs, flush the affectedarea immediately with water. Obtainmedical help immediately if eyes areaffected.
Never expose the battery to open flameor electric spark. Do not smoke nearthe battery. Failure to follow theinstructions for jump starting can leadto injury.
Connection points
WARNING
California Proposition 65 Operating, servicing and maintaining a pas- senger vehicle can expose you to chemi-cals including engine exhaust, carbon mon-oxide, phthalates, and lead, which areknown to the State of California to causecancer and birth defects or other reproduc-tive harm. To minimize exposure, avoidbreathing exhaust, do not idle the engineexcept as necessary, service your vehicle ina well ventilated area and wear gloves orwash your hands frequently when servicingyour vehicle. For more information go towww.P65Warnings.ca.gov/passenger-vehicle.
Use the vehicle's connection points in the engine compartment to connect an externalstart battery or battery charger. The battery terminals on the car's start battery in the luggage/cargo area must not be used.
17
An authorized Volvo workshop is recommended.

MAINTENANCE AND SERVICE
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581
NOTE
If the starter battery becomes discharged too many times, it will shorten its servicelife. The service life of the starter battery is affected by several factors, such as drivingconditions and climate. The startingcapacity of the battery reduces graduallyover time. The battery must therefore berecharged if the vehicle is not used or along period of time or if it is only drivenshort distances. Severe cold further limitsthe starting capacity. To keep the starter battery in a good condi- tion, the vehicle should be driven at least15 minutes per week or the battery shouldbe connected to a battery charger withautomatic trickle charging. A starter battery that is always kept fully charged has the maximum service life.Location
The start battery is located in the trunk.
WARNING
If the starter battery is disconnected, the function for automatic opening and closingmust be reset to function correctly. A resetis required in order for the pinch protectionto work.
CAUTION
On certain models, the battery is secured with a tensioning strap. Make sure that thetensioning strap is always securely tight-ened.
Specifications for start battery
Battery typeH8 AGM
Voltage (V) 12
Cold start capacity A
- CCA B
(A) 850

MAINTENANCE AND SERVICE
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* Option/accessory.607
Cleaning fabric upholstery and ceiling liner
Only use cleaning agents and car care prod- ucts recommended by Volvo. Clean regularlyand treat stains immediately. It is importantto vacuum before using a cleaning agent.
Never scrape or rub a stain, as this could dam- age the upholstery or ceiling liner. Never usestrong stain removers, as this could changethe color of the upholstery or ceiling liner. Use soapy water or a similar detergent. For more difficult stains caused by oil, ice cream,shoe polish, etc., use a stain remover. Consultwith your Volvo retailer.
Related information
Cleaning the interior (p. 605)
Cleaning the center display (p. 605)
Cleaning the seat belt (p. 607)
Cleaning floor mats and inlay mats(p. 607)
Cleaning leather upholstery
* (p. 608)
Cleaning the leather steering wheel(p. 609)
Cleaning interior plastic, metal and woodsurfaces (p. 609)
Cleaning the seat belt
Only use cleaning agents and car care prod- ucts recommended by Volvo. Clean regularlyand treat stains immediately. It is importantto vacuum before using a cleaning agent.
Use water and a synthetic soap solution. Spe- cially designed textile cleaning agents areavailable for purchase at Volvo retailers. Makesure the belt is dry before it is retracted.
Related information
Cleaning the interior (p. 605)
Cleaning the center display (p. 605)
Cleaning fabric upholstery and ceiling liner(p. 607)
Cleaning floor mats and inlay mats(p. 607)
Cleaning leather upholstery
* (p. 608)
Cleaning the leather steering wheel(p. 609)
Cleaning interior plastic, metal and woodsurfaces (p. 609)
Cleaning floor mats and inlay mats
Only use cleaning agents and car care prod- ucts recommended by Volvo. Clean regularlyand treat stains immediately. It is importantto vacuum before using a cleaning agent.
Remove the inlay mats to clean the floor mats and inlay mats separately. Each inlay mat issecured into place with pins.
1. Remove the inlay mat by grasping the inlay mat at each pin and lifting the mat straight up.
2. Use a vacuum to remove dust and dirt.
NOTE
Do not swing or strike the inlay mats vio- lently against another object to remove dirtas this could damage the mats.
3. After vacuuming, a specially designed tex- tile cleaning agent should be used to remove stains on floor mats. Floor matsshould be cleaned with products recom-mended by Volvo retailers.
4. After cleaning, put the inlay mat back into place by pressing it in at each pin.

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MAINTENANCE AND SERVICE
* Option/accessory.
608
WARNING
Never use more than one inlay mat at a time on the driver's floor. If any othertype of floor mat is used, remove theoriginal mat from the driver's seat floorbefore driving. All types of mats mustbe securely anchored in the attach-ment points in the floor. Make sure thefloor mat does not impede the move-ment of the brake pedal or acceleratorpedal in any way, as this could be aserious safety hazard.
Volvo's floor mats are specially manu-factured for your vehicle. They must beproperly secured in the attachmentpoints in the floor to help ensure theycannot slide and become trappedunder the pedals.
Related information
Cleaning the interior (p. 605)
Cleaning the center display (p. 605)
Cleaning fabric upholstery and ceiling liner(p. 607)
Cleaning the seat belt (p. 607)
Cleaning leather upholstery
* (p. 608)
Cleaning the leather steering wheel(p. 609)
Cleaning interior plastic, metal and woodsurfaces (p. 609)
Cleaning leather upholstery
*
Only use cleaning agents and car care prod- ucts recommended by Volvo. Clean regularlyand treat stains immediately. It is importantto vacuum before using a cleaning agent.
Volvo's leather upholstery * is treated to pro-
tect its original appearance. Over time, sun- light, grease, dirt, etc. could break down theprotective layer. This could result in scratchesand cracking. Leather upholstery * is a natural product that
changes and acquires a beautiful patina over time. Regular cleaning and treatments arerequired to preserve the qualities and color ofthe leather. Volvo offers a comprehensiveproduct, Volvo Leather Care KitWipes, forcleaning and treating leather upholstery.When used as directed, it helps preserve theleather's protective coating. For optimal results, Volvo recommends clean- ing and applying protective cream one to fourtimes a year (or more often as needed). VolvoLeather Care Kit 951 0251 and Volvo LeatherSoftener 943 7429 are available for purchaseat Volvo retailers.
Cleaning the leather upholstery1. Apply the leather cleaner to a damp sponge and squeeze it until the cleanerfoams. 2. Move the sponge in circular motions to
apply the foam to the stain.
3. Dampen the stain thoroughly with the sponge. Let the sponge absorb the stainand do not rub.
4. Dry the stain using a soft towel and let the leather dry completely.
Protecting the leather upholstery1. Apply a small amount of leather protectorto a cloth and then apply the protector tothe leather using light circular movements.
2. Let it dry for approximately 20 minutes. > Protecting the leather upholsterymakes it better able to withstand sun-light's harmful UV rays.
Related information
Cleaning the interior (p. 605)
Cleaning the center display (p. 605)
Cleaning fabric upholstery and ceiling liner(p. 607)
Cleaning the seat belt (p. 607)
Cleaning floor mats and inlay mats(p. 607)
Cleaning the leather steering wheel(p. 609)
Cleaning interior plastic, metal and wood surfaces (p. 609)

MAINTENANCE AND SERVICE
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* Option/accessory.613
Automatic car washes
The vehicle should be washed as soon as it becomes dirty. The longer the dirt remains,the more difficult it will be to keep the vehicleclean. It could also lead to paint damage.
Washing your vehicle in an automatic car wash is a fast and easy way to keep your vehi-cle clean, but it does not reach all areas of thevehicle. Volvo recommends washing yourvehicle by hand or supplementing automaticcar washes with a hand wash.
NOTE
Volvo recommends not washing the vehi- cle in an automatic car wash during thefirst few months; the paintwork on newvehicles takes some time to fully harden.
CAUTION
Before driving the vehicle into a car wash, deactivate the Automatic Braking whenStationary and Automatic Parking BrakeApplication functions. If the functions arenot deactivated, the brake system willseize when the vehicle is stationary and thevehicle will not be able to roll.
CAUTION
For automatic car washes in which the vehicle is pulled forward on rolling wheels:
1. Before washing the vehicle, make sure that the automatic rain sensor is deac- tivated. If it is not deactivated andinadvertently starts, the wiper armscould be damaged.
2. To help prevent damage from the auto- matic car wash machinery, make surethat the door mirrors are folded in,antennas retracted or removed, andany auxiliary lights secured.
3. Drive into the automatic car wash.
4. Turn off the "Automatic Braking when Stationary" function using the
but-
ton in the tunnel console.
5. Turn off the "Automatic Parking Brake Application" function in the center dis- play's Top view.
6. Turn off the engine by turning the start knob in the tunnel console clockwise.Hold the knob in position for at least2 seconds.
The vehicle is now ready for the automaticcar wash.
CAUTION
The system will automatically change to P
mode if the above steps are not followed. In P mode, the wheels are locked, which
they should not be when the vehicle isbeing washed in a car wash.
NOTE
Keep in mind that if the vehicle is equipped with the keyless locking and unlocking function *, the doors and tailgate/trunk lid
may open when washing the vehicle if the remote key is within range.
Related information
Cleaning the exterior (p. 610)
Polishing and waxing (p. 610)
Hand washing (p. 611)
High-pressure washing (p. 614)
Cleaning the wiper blades (p. 614)
Cleaning exterior plastic, rubber and trim components (p. 615)
Cleaning rims (p. 616)
Corrosion protection (p. 616)
Auto-hold brakes (p. 410)

MAINTENANCE AND SERVICE
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619
Sample color code (1): Canadian models.
Exterior color code
Secondary exterior color code (if applica- ble)
Related information
Paintwork (p. 617)
Touching up minor paint damage (p. 617)
Replacing windshield wiper blades
The wiper blades help remove water from the windshield. Along with the washer fluid, theyare designed to clean the glass and helpimprove visibility while driving. The wiperblades can be replaced.Raise the wiper arms to the service posi- tion. Service position is activated/deacti-vated via the function view in the centerdisplay when the car is stationary and thewindshield wipers are not on. Press thebutton on the wiper blade attachment andpull the wiper blade straight out, parallelwith the wiper arm.
Slide in a new wiper blade until it clicks into place.
3. Check to make sure the blade is securely in place.
4. Press the wiper blade back against the windshield.
Wiper blades come in varying lengths