brake VOLVO S90 2020 Quick Guide

MAINTENANCE AND SERVICE
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571
Support battery Vehicles with the Start/Stop function are equipped with two batteries – a more power-ful 12 V start battery and a support batterythat provides stronger current during thefunction's start sequence.
The 12 V support battery is located in a box next to the spring strut in the engine compartment.
NOTE
The higher the current consumption in the vehicle, the more the alternator hasto work and the batteries have to becharged = increased fuel consumption.
When the starter battery capacity hasdropped below the lowest permissiblelevel, the Start/Stop function is disen-gaged.
When the Start/Stop function is temporarily reduced due to high current consumption: The engine will auto-start, even if the driver does not lift their foot from thebrake pedal.
The support battery does not normally requiremore service than the start battery. If you haveany questions or concerns, consult a work-shop ‒ an authorized Volvo workshop is rec-
ommended.
CAUTION
If the following is not observed, the Start/ Stop function may temporarily stop work-ing after connection of an external starterbattery or battery charger:
The negative battery terminal of thevehicle's starter battery must
never be
used to connect an external starterbattery or battery charger – only thevehicle's negative charging pointshould be used as a grounding point.
NOTE
If the starter battery has been discharged to the extent that the vehicle does not havenormal electrical functions and the enginemust then be jump-started with an externalbattery or a battery charger, the Start/Stopfunction may remain activated. If the Start/Stop function shortly thereafter auto-stopsthe engine, there is a huge risk that auto-start of the engine will fail due to insuffi-cient battery capacity since the battery hadnot had time to recharge. If the vehicle has been jump-started or if there has not been enough time for thebattery to be charged with a batterycharger, the Start/Stop function should betemporarily deactivated until the batteryhas been recharged by the vehicle. At anambient temperature of about +15°C(about 60°F), the battery must be chargedby the vehicle for at least one hour. Atlower ambient temperatures, the chargingtime can increase to 3-4 hours. It is advisa-ble to charge the battery with an externalbattery charger.
Specifications for support battery
Type AGM
Voltage (V) 12

MAINTENANCE AND SERVICE
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575
Fuses in the engine compartment The fuses in the engine compartment help protect electrical components such as engineand brake functions.

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MAINTENANCE AND SERVICE
* Option/accessory.
578
Function Ampere Type
Passenger-side headlight, LEDB
15 Micro
– – Micro
––
MCaseA
–
–
MCaseA
Headlight washers
* 25
MCaseA
Washer fluid pump
25
MCaseA
Transmission control module; Electric gear selector
15 Micro
Horn20 Micro
Alarm siren* 5 Micro
Brake system control module (valves, parking brake)
40
MCaseA
Brake control with 48 V battery 30
MCaseA
Wipers
30
MCaseA
–
–
MCaseA
–
–
MCaseA
–
–
MCaseA
Brake system control module (ABS pump)
40
MCaseA
–
–
MCaseA

MAINTENANCE AND SERVICE
579
FunctionAmpere Type
– –
MCaseA
Fed when ignition is on: engine control module, transmission components, electrical power steering, central electrical module, brake system control module 5 Micro
–
– Micro
Passenger-side headlight, LEDB
15 Micro
– – Micro
–– Micro
Battery connection control module 5 Micro
Airbags; Passenger weight sensor5 Micro
Driver-side headlight, LEDB
15 Micro
Accelerator pedal sensor 5 Micro
A
This type of fuse should be replaced by a workshop. An authorized Volvo workshop is recommended.
B LED (Light Emitting Diode)
Related information
Fuses and fuseboxes (p. 573)
Replacing fuses (p. 574)

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MAINTENANCE AND SERVICE
* Option/accessory.
582
Function Ampere Type
Medium voltage module 10 Micro
Electrical outlet in tunnel console between rear seats* 30
MCaseA
–
– Micro
Movement sensor* 5 Micro
–
– Micro
Instrument panel 5 Micro
Center console buttons5 Micro
Sun sensor5 Micro
–– Micro
–– Micro
Steering wheel module 5 Micro
Module for start knob and parking brake controls5 Micro
Heated steering wheel* module 15 Micro
–
– Micro
–– Micro
–– Micro
–– Micro

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MAINTENANCE AND SERVICE
* Option/accessory.
594
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. 591)
Cleaning the center display (p. 591)
Cleaning fabric upholstery and ceiling liner(p. 593)
Cleaning the seat belt (p. 593)
Cleaning leather upholstery
* (p. 594)
Cleaning the leather steering wheel(p. 595)
Cleaning interior plastic, metal and woodsurfaces (p. 595)
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. 591)
Cleaning the center display (p. 591)
Cleaning fabric upholstery and ceiling liner(p. 593)
Cleaning the seat belt (p. 593)
Cleaning floor mats and inlay mats(p. 593)
Cleaning the leather steering wheel(p. 595)
Cleaning interior plastic, metal and wood surfaces (p. 595)

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MAINTENANCE AND SERVICE
598
Wash using a sponge, car washing deter- gent and plenty of lukewarm water.
Clean the wiper blades with lukewarmsoap solution or car washing detergent.
Dry the vehicle using a clean, soft chamoisor a squeegee. Try not to let drops ofwater dry in strong sunlight. This couldcause water drying stains that may needto be polished out.
In areas with heavy industrial emissions,more frequent washing of the vehicle'sexterior is recommended.
Tar spots from asphalt may remain evenafter washing. Use a tar remover toremove these spots.
WARNING
Always entrust engine washing to a work- shop. If the engine is hot, there is a risk offire.
CAUTION
Dirty headlights do not work as well. Clean them regularly, e.g. when refueling. Do not use corrosive cleaners. Use water and a non-abrasive sponge.
NOTE
Exterior lighting such as headlights and taillights may develop temporary conden-sation on the inside of the lens. This is nor-mal. All exterior lighting is designed toresist this. Condensation is normally ven-ted out of the lamp housing once the lighthas been lit for some period of time.
CAUTION
Make sure that the panoramic roof and sun shade are closed before washingthe vehicle.
Never use abrasive polishing agents onthe panoramic roof.
Never use wax on the rubber sealsaround the panoramic roof.
CAUTION
Remember to remove dirt from the drain holes in the doors and sills after washingthe vehicle.
Related information
Cleaning the exterior (p. 596)
Polishing and waxing (p. 596)
Automatic car washes (p. 599)
High-pressure washing (p. 600)
Cleaning the wiper blades (p. 600)
Cleaning exterior plastic, rubber and trim components (p. 601)
Cleaning rims (p. 602)
Corrosion protection (p. 602)
Settings for automatically activating theparking brake (p. 387)

MAINTENANCE AND SERVICE
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* Option/accessory.599
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. 596)
Polishing and waxing (p. 596)
Hand washing (p. 597)
High-pressure washing (p. 600)
Cleaning the wiper blades (p. 600)
Cleaning exterior plastic, rubber and trim components (p. 601)
Cleaning rims (p. 602)
Corrosion protection (p. 602)
Auto-hold brakes (p. 389)

MAINTENANCE AND SERVICE
* Option/accessory.
600
Settings for automatically activating the parking brake (p. 387)
Keyless and touch-sensitive surfaces
*
(p. 248)
High-pressure washing 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.Wash the vehicle in a car wash or garagewith an oil separator. Use a car washingdetergent.
If washing the vehicle with a high-pressure wash, use sweeping movements and keep thenozzle at least 30 cm (13 in.) from the vehicle.Do not spray directly onto locks.
Related information
Cleaning the exterior (p. 596)
Polishing and waxing (p. 596)
Hand washing (p. 597)
Automatic car washes (p. 599)
Cleaning the wiper blades (p. 600)
Cleaning exterior plastic, rubber and trimcomponents (p. 601)
Cleaning rims (p. 602)
Corrosion protection (p. 602)
Cleaning the wiper blades 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.Wash the vehicle in a car wash or garagewith an oil separator. Use a car washingdetergent.
Asphalt, dust and salt residue on wiper blades, as well as insects, ice etc. on the windshield,shorten the service life of wiper blades. When cleaning, put the wiper blades in the service position.
NOTE
Wash the wiper blades and windshield regularly with a lukewarm soap solution orvehicle shampoo. Do not use strong sol-vents.
Related information
Cleaning the exterior (p. 596)
Polishing and waxing (p. 596)
Hand washing (p. 597)
Automatic car washes (p. 599)
High-pressure washing (p. 600)
Cleaning exterior plastic, rubber and trim components (p. 601)

SPECIFICATIONS
618
Coolant specifications
Recommended grade: Volvo-approved pre-
mixed coolant. If concentrated coolant is used, mix with 50% water of acceptablequality (i.e. not salt water, etc.). Consult aVolvo retailer if you have any questions.
To avoid deterioration of the cooling system, engine trouble, etc., only approved Volvo cool-ant should be used.
WARNING
Coolant is hazardous if ingested and could cause damage to organs (kidneys). Theproduct contains ethylene glycol, inhibitor,water, etc.
Related information
Refilling coolant (p. 556)
Transmission fluid specifications
Under normal driving conditions, the trans- mission fluid will not need to be changed dur-ing the transmission's service life. However,it may need to be changed if the vehicle isdriven frequently in adverse driving condi-tions.
Automatic transmission
Prescribed transmission fluid: AW-1
Related information
Type designations (p. 610)
Brake fluid specifications
The medium in the hydraulic brake system is called brake fluid and is used to transfer brak-ing force from e.g. pressure on the brakepedal via a master brake cylinder to one ormore slave cylinders, which in turn act on amechanical brake.
Recommended grade: Volvo Original or simi-
lar fluid that meets a combination of Dot 4, 5.1 and ISO 4925 class 6.
NOTE
Changing or filling brake fluid should be entrusted to an authorized Volvo work-shop.
Related information
Engine compartment overview (p. 553)