2020 VOLVO S90 warning light

STARTING AND DRIVING
418
Emission controls
Three-way catalytic converter
Keep your engine properly tuned. Certain engine malfunctions, particularly involvingthe electrical, fuel or distributor ignitionsystems, may cause unusually high three-way catalytic converter temperatures. Donot continue to operate your vehicle if youdetect engine misfire, noticeable loss ofpower or other unusual operating condi-tions, such as engine overheating or back-firing. A properly tuned engine will helpavoid malfunctions that could damage thethree-way catalytic converter.
Do not park your vehicle over combustiblematerials, such as grass or leaves, whichcan come into contact with the hotexhaust system and cause such materialsto ignite under certain wind and weatherconditions.
Excessive starter cranking (in excess ofone minute), or an intermittently firing orflooded engine can cause three-way cata-lytic converter or exhaust system over-heating.
Remember that tampering or unauthor-ized modifications to the engine, theEngine Control Module, or the vehicle maybe illegal and can cause three-way cata-lytic converter or exhaust system over-heating. This includes: altering fuel injec- tion settings or components, alteringemission system components or locationor removing components, and/or repeateduse of leaded fuel.
NOTE
Unleaded fuel is required for vehicles with three-way catalytic converters.
Heated oxygen sensorsThe heated oxygen sensors monitor the oxy- gen content of the exhaust gases. Readings are fed into a control module that continuouslymonitors engine functions and controls fuelinjection. The ratio of fuel to air into the engineis continuously adjusted for efficient combus-tion to help reduce harmful emissions.
Related information

Octane rating (p. 416)
Fuel (p. 415)
Overheating of engine and transmission
In certain driving conditions, such as driving in mountainous areas or hot weather, there isa risk of the engine or transmission overheat-ing, especially when carrying heavy loads.
Engine power may be temporarily limited.
Remove any auxiliary lights mounted in front of the grille when driving in hotweather.
If the temperature in the engine's coolingsystem becomes too high, a warning sym-bol will appear in the instrument panel along with the message
Engine
temperature High temperature Stop
safely. Pull over to a safe location and let
the engine idle for a few minutes to cool down.
If the message
Engine temperature
High temperature Turn off engine orEngine coolant Level low, turn off
engine is displayed, stop the vehicle and
turn off the engine.
If the transmission begins to overheat, an alternative gear shifting program will beselected. An integrated protective functionwill also be activated, the warning symbolwill illuminate and the message
Transmission warm Reduce speed to
lower temperature or Transmission hot
Stop safely, wait for cooling will be dis-

STARTING AND DRIVING
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423
5. Keep the towline taut when the towing
vehicle slows down by applying light pres- sure to the brake pedal. This will helpavoid jarring movements.
6. Be prepared to apply the brakes to stop the vehicle.
Jump startingDo not tow the vehicle to start the engine. Usean auxiliary battery if the start battery's chargelevel is so low that the engine cannot bestarted.
CAUTION
Attempting to tow with the engine running could result in damage to the three-waycatalytic converter.
Related information
Attaching and removing the towing eyelet (p. 423)
Hazard warning flashers (p. 157)
Recovery (p. 425)
Jump starting using another battery(p. 420)
Selecting ignition mode (p. 382)
Transmission (p. 391)
Attaching and removing the towing eyelet
Use the towing eyelet when towing. Screw the towing eyelet securely into place in thethreaded outlet behind the cover on the right-hand side of the front and rear bumpers.
NOTE
If the vehicle is equipped with a towbar, there is no rear attachment for the towingeye.
Attaching the towing eyelet
Take out the towing eyelet, which is stored in a foam block under the floor inthe cargo compartment.
Front: Remove the cover by pressing on the mark with a finger.
> The cover turns along its center line and can then be removed.

STARTING AND DRIVING
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* Option/accessory.425
Recovery
This section refers to transporting the vehicle with a tow truck or similar vehicle.
Call a professional towing service for assis- tance. In certain conditions, the towing eyelet can be used to pull the vehicle onto a flatbed towtruck. For vehicles equipped with leveling con- trol *: If the vehicle is equipped with pneumatic
suspension, this feature must be turned off before the vehicle is lifted onto a tow truck.Turning off the function in the center display. 1. Tap
Settings in the Top view.
2. Tap
My CarParking Brake and
Suspension.
3. Select
Disable Leveling Control.
The vehicle's location and ground clearance determine if it can be lifted onto a tow truck. Ifthe incline of the tow truck is too steep or ifthe ground clearance under the vehicle isinsufficient, attempting to pull it up may resultin damage. In this case, the vehicle shouldonly be lifted with the tow truck's lifting equip-ment.
WARNING
No person or object should be behind the tow truck when the vehicle is lifted ontothe bed of the truck.
CAUTION
The towing eyelet is only intended for tow- ing on roads, and must not be used to pull
vehicles from ditches or any similar pur-pose involving severe strain. Call a towtruck for professional assistance.
CAUTION
Note that the vehicle must always be towed with the wheels rolling forward.
Related information
Attaching and removing the towing eyelet (p. 423)
HomeLink ®
*17
HomeLink ®
18
is a programmable remote con-
trol, integrated in the vehicle electrical sys- tem, that can control up to three differentdevices (e.g. garage door opener, alarm sys-tem, outdoor and indoor lighting) and therebyreplace the remote controls for these.
General
The illustration is generic – the design may vary.
Button 1
Button 2
Button 3
Indicator light
17 Certain markets only.
18 HomeLink and the HomeLink house symbol are registered trademarks of Gentex Corporation.

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STARTING AND DRIVING
* Option/accessory.
426 HomeLink
®
is delivered integrated in the rear-
view mirror. The HomeLink ®
panel consists of
three programmable buttons and an indicator light in the mirror. For more information about HomeLink ®
,
please visit: www.HomeLink.com or call 1-800-355-3515. Save the original remote controls for future programming (e.g. for use in another vehicle).It is also advisable to delete the button pro-gramming if the vehicle is sold.
Related information
Using HomeLink ®
* (p. 428)
Programming HomeLink ®
* (p. 426)
Type approval for HomeLink ®
* (p. 429)
Programming HomeLink ®
*19
Follow these instructions to program HomeLink ®
, reset all programming, or pro-
gram individual buttons.
NOTE
In some vehicles, the ignition must be on or in the "accessory position" before HomeLink ®
can be programmed or used. It
can be a good idea to put new batteries in the remote control being replaced by HomeLink ®
for faster programming and
better radio signal transmission. TheHomeLink ®
buttons should be reset before
programming.
WARNING
While HomeLink ®
is being programmed,
the garage door or gate being programmed may be activated. Make sure that no one isnear the door or gate during programming.When programming a garage door opener,it is advised to park outside of the garage. 1. Point the remote control at the
HomeLink ®
button to be programmed and
hold it about 2-8 cm (1-3 inches) from the button. Do not obstruct the HomeLink ®
indicator light. Note: Some remote controls are more
effective at programming HomeLink ®
from
a distance of about 15-20 cm (6-12 inches). Keep this in mind if you experi-ence any programming difficulties.
2. Press and hold both the remote control button and the HomeLink ®
button to be
programmed.
19 Certain markets only.

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STARTING AND DRIVING
* Option/accessory.
428
Related information
Using HomeLink ®
* (p. 428)
HomeLink ®
* (p. 425)
Type approval for HomeLink ®
* (p. 429)Using HomeLink ®
*21
Once HomeLink ®
is programmed, it can be
used instead of the separate remote controls.
Press and hold the programming button. The garage door, gate, alarm system, etc. will beactivated (this may take several seconds). Ifthe button is held down for more than 20 sec-onds, reprogramming will begin. The indicatorlight will glow steadily or flash when the but-ton has been pressed. The original remotecontrols may be used concurrently with HomeLink ®
if desired.
NOTE
When the ignition is switched off, HomeLink ®
will be active for at least
7 minutes.
NOTE
HomeLink ®
cannot be used if the vehicle is
locked and the alarm is armed * from the
outside.
WARNING
If you use HomeLink ®
to open a garage
door or gate, be sure no one is near the gate or door while it is in motion.
Do not use HomeLink ®
with any
garage door opener that lacks safetystop and reverse features as requiredby US federal safety standards (thisincludes any garage door opener modelmanufactured before April 1, 1982). Agarage door that cannot detect anobject - signaling the door to stop andreverse - does not meet current U.S.federal safety standards. For moreinformation, contact HomeLink at:www.homelink.com.
Related information
HomeLink ®
* (p. 425)
Programming HomeLink ®
* (p. 426)
Type approval for HomeLink ®
* (p. 429)
21
Certain markets only.

WHEELS AND TIRES
* Option/accessory.515
Jack*
The jack can be used to lift the vehicle to e.g. change a wheel.CAUTION
When not in use, the jack
* should be
kept in its storage compartment under the cargo compartment floor.
The jack provided with your vehicle isintended to be used only in temporarysituations such as changing wheels inthe event of a flat tire. Only the jackthat came with your particular modelshould be used to lift the vehicle. If thevehicle needs to be lifted more fre-quently or for a prolonged period, usinga garage jack or hoist is recommended.Always follow this device's instructionsfor use.
The jack needs to be cranked together to the correct position in order to fit. For vehicles with
Leveling Control*
: If the
vehicle is equipped with the optional pneu- matic suspension, it must be turned off beforethe vehicle is lifted on a jack.
Related information
Tool kit (p. 514)
Hoisting the vehicle (p. 549)
Wheel bolts
The wheel bolts hold the wheel in place on the wheel hub.
Only use rims that have been tested and approved by Volvo and are included in Volvo'soriginal product range. Use a torque wrench to check that the wheel bolts are tightened correctly. Do not grease the wheel bolt threads.
WARNING
The wheel bolts may need to be tightened again several days after a wheel change.Temperature fluctuations and vibrationscan cause them to loosen slightly.
CAUTION
The wheel bolts should be tightened to 140 Nm (103 ft. lbs.). Over-tightening orunder-tightening could damage the threa-ded joints.
Locking wheel bolts *A tool for removing the locking wheel bolts is located in the foam block under the cargocompartment floor.
Related information
Removing a wheel (p. 516)
Installing a wheel (p. 518)

WHEELS AND TIRES
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* Option/accessory.519
4. Tighten the wheel bolts in a crisscross pat-
tern (as shown in illustration). It is impor- tant that the wheel bolts are securelytightened. Tighten to 140 Nm (103 ft. lbs.).Use a torque wrench to check torque.
5. Press the plastic covers onto the wheelbolts.
6. Check the tire inflation pressure and store the new inflation pressure in the tire pres- sure monitoring system *.
WARNING
The wheel bolts may need to be tightened again several days after a wheel change.Temperature fluctuations and vibrationscan cause them to loosen slightly.
NOTE
After inflating a tire, always replace the valve cap to help prevent valve damagecaused by gravel, dirt, etc.
Use plastic valve caps only. Metal capscould corrode and become difficult toremove.
Related information
When changing wheels (p. 514)
Hoisting the vehicle (p. 549)
Jack
* (p. 515)
Tool kit (p. 514)
Removing a wheel (p. 516)
Saving a new inflation pressure in the monitoring system
* (p. 511)
Checking tire pressure (p. 507)
Spare wheel 13
The spare wheel is a Temporary Spare and can be used to temporarily replace a punc- tured tire on one of the vehicle's regularwheels.
The spare tire is only intended for temporary use. Replace it with a normal wheel as soon aspossible. The driving characteristics of the vehicle change and ground clearance reduces whenthe spare wheel is used. Do not wash the vehi-cle in an automatic car wash while using theTemporary Spare. The recommended tire pressure must be maintained regardless of at which position thetemporary spare wheel is used on the vehicle. If the spare wheel is damaged, a new one can be purchased from a Volvo retailer.
WARNING
Current legislation prohibits the use of the "Temporary Spare" tire other than as atemporary replacement for a puncturedtire. It must be replaced as soon as possi-ble by a standard tire. Road holding andhandling may be affected with the "Tempo-rary Spare" in use. Do not drive faster than80 km/h (50 mph).
13 Not available on all models.

MAINTENANCE AND SERVICE
* Option/accessory.551
Climate control system service
Service and repairs on the air conditioning system should only be done by an authorizedworkshop.
Troubleshooting and repairsThe air conditioning system contains a fluores- cent tracer substance. Ultraviolet light is usedto search for leaks in the system. Volvo recommends contacting an authorized Volvo workshop.
Vehicles with R134a refrigerant
WARNING
The air conditioning system contains the refrigerant R134a under pressure. Serviceand repairs to the system should only bedone by an authorized workshop.
Vehicles with R1234yf refrigerant
WARNING
The air conditioning system contains the refrigerant R1234yf under pressure. Inaccordance with SAE J2845 (TechnicianTraining for Safe Service and Containmentof Refrigerants Used in Mobile A/C Sys-tem), service and repairs to the refrigerantsystem may only be performed by trainedand certified technicians in order to ensurethe safety of the system.
Related information
Volvo's service program (p. 542)
Replacing a windshield with head- up display
*
Vehicles with a head-up display have a spe- cial type of windshield that meets therequirements for displaying projected infor-mation.
Volvo recommends contacting an authorized Volvo workshop for assistance replacing thewindshield. The correct type of replacementwindshield must be used in order for the head-up display to function properly.
Related information
Head-up display
* (p. 139)
Cleaning the head-up display
* (p. 592)