climate control VOLVO S90 TWIN ENGINE 2019 Repair Manual

WHEELS AND TIRES
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543
imprinted on the sidewall of the tire. The last fourdigits in the series is the Department ofTransportation (DOT) stamp and indicates theweek and year the tire was manufactured. Thetire in the illustration has 0717 as the last fourdigits, which means it was manufactured week 7of 2017.

Tire age
Tires degrade over time, even when they are notbeing used. It is recommended that tires gener-ally be replaced after 6 years of normal service.Heat caused by hot climates, frequent high load-ing conditions or Ultra Violet (U.V.) exposure canaccelerate the aging process. The temporary
spare 2 should also be replaced at 6-year inter-vals, even if it has never been used. A tire withe.g., visible cracks or discoloration should bereplaced immediately.

Tire economy
Maintain correct tire pressure.
Avoid fast starts, hard braking and tirescreeching.
Tire wear increases with speed.
Correct front wheel alignment is very impor-tant.
Unbalanced wheels impair tire economy anddriving comfort.
Tires must maintain the same direction ofrotation throughout their lifetime.
When replacing tires, the tires with the mosttread should be mounted on the rear wheelsto reduce the chance of oversteer duringhard braking.
Hitting curbs or potholes can damage thetires and/or wheels permanently.
Tire rotation
Your vehicle has no required tire rotation. Drivingstyle, tire pressure, climate and road conditionsaffect how quickly the tires age and exhibit signsof wear. Maintaining the correct tire pressurehelps keep tread wear evenly distributed.
To help prevent differences in tread depth andwear patterns forming on the tires, the front andrear wheels should be rotated, i.e. the front tiresmoved to the rear and the rear tires moved to thefront. Ideally, tire rotation should be done the firsttime after approximately 5000 km (ca3100 miles) and thereafter at 10,000 km(approx. 6200 miles) intervals.
If you have any questions regarding tread depth,Volvo recommends consulting an authorizedVolvo workshop. If significant differences in wear(> 1 mm difference in tread depth) between thetires have already occurred, the least worn tiresshould always be mounted on the rear wheels. Afront-wheel skid (understeer) is usually easier to
control than a rear-wheel skid (oversteer). If thefront wheels skid, the vehicle will continue in astraight line instead of the rear wheels skiddingto the side, which could cause you to completelylose control of the vehicle. It is therefore impor-tant that the rear wheels never lose grip beforethe front wheels.
Storing wheels and tires
When storing complete wheels (tires mounted onrims), they should be suspended off the floor orplaced on their sides on the floor.
Tires not mounted on rims should be stored ontheir sides or standing upright, but should not besuspended.

CAUTION
Tires should preferably be stored in a cool,dry, dark place, and should never be stored inclose proximity to solvents, gasoline, oils, etc.
2Not available on all models.

WHEELS AND TIRES
548
Uniform Tire Quality Grading
ALL PASSENGER VEHICLE TIRES MUSTCONFORM TO FEDERAL SAFETY REQUIRE-MENTS IN ADDITION TO THESE GRADES.
Quality grades can be found, where applica-ble, on the tire sidewall between the treadshoulder and maximum section width. Forexample:
Treadwear 200 Traction AA Temperature A

TREADWEAR
The treadwear grade is a comparative ratingbased on the wear rate of the tire when testedunder controlled conditions on a specified gov-ernment test course. For example, a tire graded150 would wear one and one half (1 ½) times aswell on the government course as a tire graded100. The relative performance of tires dependsupon the actual conditions of their use, however,and many depart significantly from the norm dueto variation in driving habits, maintenance practi-ces and differences in road characteristics andclimate.

TRACTION
The traction grades, from highest to lowest, areAA, A, B, and C, as measured under controlledconditions on specified government test surfacesof asphalt and concrete. A tire marked C mayhave poor traction performance.
WARNING
The traction grade assigned to this tire isbased on braking (straight-ahead) tractiontests and is not a measure of cornering (turn-ing) traction.

TEMPERATURE
The temperature grades are A (the highest), B,and C, representing the tire's resistance to thegeneration of heat and its ability to dissipate heatwhen tested under controlled conditions on aspecified indoor laboratory test wheel. Sustainedhigh temperature can cause the material of thetire to degenerate and reduce tire life, and exces-sive temperature can lead to sudden tire failure.The grade C corresponds to a minimum level ofperformance that all passenger vehicle tires mustmeet under the Federal Motor Safety StandardNo. 109. Grades B and A represent higher levelsof performance on the laboratory test wheel thanthe minimum required by law.

WARNING
The temperature grade for this tire is estab-lished for a tire that is properly inflated andnot overloaded. Excessive speed, under-infla-tion, or excessive loading, either separately orin combination, can cause heat buildup andtire failure.
Related information
Tires (p. 542)
Tire sidewall designations (p. 546)

LOADING, STORAGE AND PASSENGER COMPARTMENT
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Tunnel console
The tunnel console is located between the frontseats.
Storage compartment with cover*. The covercan be opened/closed by pressing the han-dle.
Storage compartment with cup holder and12 V socket.
Storage compartment and USB port underthe armrest.
Climate control panel for the rear seats* orstorage compartment.
Electrical socket and USB port1. The covercan be opened/closed by pressing the han-dle.

WARNING
Store loose objects, such as cell phone, cam-era, remote control for extra equipment, etc.,in the glove compartment or another compart-ment. Otherwise, these could injure people inthe vehicle in the event of hard braking or acollision.

NOTE
One of the sensors for the alarm* is locatedunder the cup holder in the center console.Avoid placing coins, keys and other metalobjects in the cup holder as this could triggerthe alarm.

CAUTION
Keep in mind that glossy surfaces can beeasily scratched by e.g. metal objects. Do notplace keys, phones or similar items on sensi-tive surfaces.

Related information
Passenger compartment interior (p. 574)
Electrical outlets (p. 575)
Climate system controls (p. 207)
Electrical outlets
There are two 12-volt electrical sockets and one12-volt electrical socket* in the trunk.
If a problem occurs with an electrical socket,contact a workshop - an authorized Volvo work-shop is recommended.
12 V outlets
12 V outlet in the tunnel console, front seat.
The 12 V outlets can be used for devicesintended for this such as MP3 players, coolersand cellular phones.
1The USB port can be used to charge e.g. a cellular phone or tablet. The USB port cannot be used to play media through the vehicle's sound system.

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MAINTENANCE AND SERVICE
586

Monthly:
Check cold tire pressure in all tires. Inspectthe tires for wear.
Check that engine coolant and other fluidlevels are between the indicated "min" and"max" markings.
Clean interior glass surfaces with a glasscleaner and soft paper towels.
Wipe driver information displays with a softcloth.
Visually inspect battery terminals for corro-sion. Corrosion may indicate a loose terminalconnector, or a battery near the end of itsuseful service life. Consult your Volvo retailerfor additional information.

As needed:
Wash the car, including the undercarriage, toreduce wear that can be caused by a buildup ofdirt, and corrosion that can be caused by salt res-idues.
Clean leaves and twigs from air intake vents atthe base of the windshield, and from other placeswhere they may collect.

NOTE
Complete service information for qualifiedtechnicians is available online for purchase orsubscription at www.volvotechinfo.com.
Related information
Vehicle status (p. 588)
Scheduling service and repairs (p. 589)
Connecting equipment to the vehicle's datalink connector (p. 37)
Technician certification (p. 38)
Climate control system service (p. 595)
Maintenance of the brake system (p. 433)
Engine compartment overview (p. 596)
Data transfer between vehicle andworkshop over Wi-Fi
Volvo workshops have a designated Wi-Fi net-work for secure data transfer between your vehi-cle and the workshop. Your visit to the workshopwill be easier and more effective when diagnos-tics information and software can be transferredover the workshop's network.
When you arrive at the workshop, your servicetechnician can connect your vehicle to the work-shop's Wi-Fi network to perform troubleshootingand download software. For this type of commu-nication, the vehicle only connects to a work-shop's network. It is not possible to connect thevehicle to another Wi-Fi network (e.g. your homenetwork) in the same way as to a workshop's net-work.

Connecting with remote key
Connection is usually managed by the servicetechnician, who will use the remote key buttons. Itis therefore important to bring a key with buttonswith you when you visit the workshop. Pressingthe lock button on the remote key three times willconnect the vehicle to the workshop's Wi-Fi net-work.
When the car is connected to a Wi-Fi network,
the symbol appears in the center display.

MAINTENANCE AND SERVICE
* Option/accessory.595
Hood completely closed. The illustration is generic -details may vary according to vehicle model.

WARNING
Never drive with the hood open!
If there are any indications while driving thatthe hood is not completely closed, stop imme-diately and close it securely.

Related information
Engine compartment overview (p. 596)
Door and seat belt reminders (p. 51)
Climate control system service
Service and repairs on the air conditioning sys-tem should only be done by an authorized work-shop.
Troubleshooting and repairs
The air conditioning system contains a fluores-cent tracer substance. Ultraviolet light is used tosearch for leaks in the system.
Volvo recommends contacting an authorizedVolvo workshop.

Vehicles with R134a refrigerant
WARNING
The air conditioning system contains therefrigerant R134a under pressure. Serviceand repairs to the system should only be doneby an authorized workshop.

Related information
Volvo's service program (p. 584)
Replacing a windshield with head-
up display*
Vehicles with a head-up display have a specialtype of windshield that meets the requirementsfor displaying projected information.
Volvo recommends contacting an authorizedVolvo workshop for assistance replacing thewindshield. The correct type of replacementwindshield must be used in order for the head-updisplay to function properly.
Related information
Head-up display* (p. 138)
Cleaning the head-up display* (p. 620)

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MAINTENANCE AND SERVICE
602

CAUTION
It is not possible to charge another vehicle'sbattery by means of current through thecharging points. Using the charging points tocharge another vehicle's battery could causea fuse to blow, which would cause the charg-ing points to stop working.

CAUTION
Only a modern battery charger with controlledcharge voltage should be used to charge thestarter battery. The rapid charging functionshould not be used as this could damage thebattery.

NOTE
If both the starter battery and the hybrid bat-tery are discharged, both batteries must becharged. In such cases, it is not possible tocharge only the hybrid battery first.
The starter battery must have a certain levelof charge for it to be possible to charge thehybrid battery.
CAUTION
Failure to observe the following could causethe infotainment energy save mode to tempo-rarily stop working and/or a message in thedriver's display regarding the state of chargeof the starter battery may be temporarilyincorrect after an external starter battery orbattery charger has been connected:
The negative battery terminal of the vehi-cle's starter battery must never be usedto connect an external starter battery orbattery charger – only the vehicle's neg-ative charging point should be used asa grounding point.
NOTE
If the starter battery becomes discharged toomany times, it will shorten its service life.
The service life of the starter battery is affec-ted by several factors, such as driving condi-tions and climate. The starting capacity of thebattery reduces gradually over time. The bat-tery must therefore be recharged if the vehi-cle is not used or a long period of time or if itis only driven short distances. Severe cold fur-ther limits the 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 should beconnected to a battery charger with automatictrickle charging.
A starter battery that is always kept fullycharged has the maximum service life.

MAINTENANCE AND SERVICE
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Fuse pliers are provided on the inside of the fusebox cover to assist in removing and insertingfuses.
There are also spaces for several extra fuses inthe fusebox.

Positions
There is a decal with a diagram of the locationsof the fuses on the inside of the cover.
Fuses 1–13, 18–30, 35–37 and 46–70 are"Micro" fuses.
Fuses 14–17, 31–34, 38–45 and 71–78 are"MCase" fuses and should only be replaced
by a workshop16.
FunctionAmpere
––
––
––
Control module for actuatorfor engaging/changing gears,automatic transmission
5
High-voltage coolant heatercontrol module5
FunctionAmpere
Control module for A/C; heatexchanger cut-off valve; cut-off valve for coolant throughthe climate system
5
Hybrid battery control module;high-voltage converter forcombined high-voltage gener-ator/starter motor with 500V–12 V voltage converter
5
––
Converter for controlling feedto rear axle electric motor10
Hybrid battery control module;high-voltage converter forcombined high-voltage gener-ator/starter motor with 500V–12 V voltage converter
10
Charge module5
Cut-off valve for hybrid batterycoolant; coolant pump 1 forhybrid battery
10
Coolant pump for electric drivesystem10
FunctionAmpere
Hybrid component cooling fan 25
––
––
––
––
––
––
––
––
Front USB port in tunnel con-sole, front*5
12 V outlet in tunnel console,front15
12 V outlet in tunnel console
between second-row seatsA
12 V outlet in tunnel console,
between rear seatsB; USBports in tunnel console
between rear seatsB
15
16An authorized Volvo workshop is recommended.

MAINTENANCE AND SERVICE
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Fuse pliers are provided on the inside of the fusebox cover to assist in removing and insertingfuses.
There are also spaces for several extra fuses inthe distribution box in the engine compart-ment.

Positions
Fuses 1, 3-21, 23-36, 39-53 and 55-59 are"Micro" fuses.
Fuses 2-22, 37-38 and 54 are "MCase"fuses and should only be replaced by a work-
shop17.
FunctionAmpere
––
––
––
Movement sensor*5
Instrument panel5
Center console buttons5
Sun sensor5
FunctionAmpere
Sensus control module20
––
Steering wheel module5
Module for start knob andparking brake controls5
Heated steering wheel* mod-ule15
––
––
––
––
Climate system control mod-ule10
––
Data link connector OBD-II 10
Center display5
Climate system blower module(front)40
FunctionAmpere
USB HUB5
Instrument lighting; Interiorlighting; Rearview mirror auto-dim function*; Rain and lightsensors*; Rear tunnel consolekeypad, rear seat*; Power frontseats*; Rear door control pan-els; Climate system blowermodule left/right
7.5
Control module for driver sup-port functions5
Panoramic roof with sun cur-tain*20
Head-up display*5
Passenger compartment light-ing5
––
Ceiling console display (seatbelt reminder/front passengerside airbag indicator)
5
––
Humidity sensor5
17An authorized Volvo workshop is recommended.

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MAINTENANCE AND SERVICE
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FunctionAmpere
Door module in right-side reardoor
Power right rear seatA
20
Fuses in the trunk/cargo com-partment10
Control module for Internet-connected vehicle; Controlmodule for Volvo On Call
5
Door module in left-side reardoor
Power left rear seatB
20
Audio control module (ampli-fier) (certain models only)40
––
Multi-band antenna module 5
Front seat massage function*5
––
Rear door sun curtain modules 15
Fuel pump control module 15
FunctionAmpere
Relay windings for distributionbox in engine compartment;Relay windings for transmis-sion oil pump
5
––
Driver's seat heating15
Front passenger's seat heat-ing15
Coolant pump10
––
Power driver's seat*20
Active chassis control module*20
––
Sensus control module10
––
Climate system blower module(rear)10
Power front passenger seat*20
FunctionAmpere
Display for rear seat conven-
ience functionsA; On-boarddiagnostics (OBD II) in tunnel
console between rear seatsA;
Extra movement sensorA
5A
TV* (certain markets only)5
Primary fuse for fuses 9, 53and 5815
AExcellenceBExcellence

Related information
Fuses and fuseboxes (p. 606)
Replacing fuses (p. 607)

SPECIFICATIONS
648
Fuel tank volume
The fuel tank's refillable volume is shown in thetable below.
All models
Liter (approx)60
US gallons (approx)15.9

Related information
Refueling (p. 460)
Octane rating (p. 462)
Air conditioning specifications
The climate system in the vehicle uses a freon-free R134a refrigerant. For information regardingthe refrigerant, refer to the decal located on theinside of the hood.
The prescribed grades and volumes for fluids andlubricants in the air conditioning system areshown in the tables below.

A/C Decal
Decal for R134a
Refrigerant
Vehicles with R134a refrigerant
WeightPrescribed grade
675 g (1.49 lbs) R134a
WARNING
The air conditioning system contains therefrigerant R134a under pressure. Serviceand repairs to the system should only be doneby an authorized workshop.

Compressor oil
VolumePrescribed grade
100 ml (3.38 fl. oz.) PAG SP-A2

Evaporator
CAUTION
The A/C system evaporator must never berepaired or replaced with a previously usedevaporator. The new evaporator must be certi-fied and labeled in accordance with SAEJ2842.

Related information
Climate control system service (p. 595)