2020 VOLVO S90 service

MAINTENANCE AND SERVICE
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Coolant expansion tank, left-hand drive vehicle.
Unscrew the cover in the plastic covering.
Unscrew the expansion tank cap and fill coolant as needed. The level should notexceed the yellow MAX mark inside the
expansion tank.
Put the components back in place in thereverse order.
CAUTION
Do not ingest the contents. May cause damage to organs (kidneys).
Use premixed coolant according toVolvo's recommendations. If concen-trated coolant is used, make sure thatthe coolant mixture is 50% coolantand 50% water of acceptable quality.
Do not mix different types of coolant.
To help ensure sufficient corrosion pro-tection in the system, only use newcoolant when replacing larger compo-nents in the cooling system.
Never run the engine unless the cool-ing system is properly filled. Animproperly filled cooling system couldlead to high temperatures and cracksin the cylinder heads.
High levels of chlorine, chlorides andother salts may cause corrosion in thecooling system.
Related information
Engine compartment overview (p. 553)
Coolant specifications (p. 618)

MAINTENANCE AND SERVICE
* Option/accessory.
558
Replacing bulbs
Bulb types vary depending on model and equipment level. If a light bulb 15
breaks, it can
be replaced by following the procedure shown in the Owner's Manual. If you are experiencing problems with any lights other than light bulbs, contact a work- shop 16
.
If there is a problem with an LED 17
light, the
entire lamp unit will normally need to be replaced.
NOTE
For information on lights not mentioned in the Owner's Manual, contact a Volvodealer or a certified Volvo service techni-cian.
WARNING
The vehicle electrical system must be in ignition mode 0 when bulbs are replaced.
CAUTION
Never touch the bulb glass with your bare fingers. Grease and oils from your fingersvaporize in the heat and will leave adeposit on the reflector, which may dam-age it.
NOTE
If the error message persists after the defective bulb has been replaced, we rec-ommend a visit to an authorized Volvoworkshop.
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.
NOTE
Bulbs for active curve lighting * contain
traces of mercury and should therefore always be submitted to a certified Volvoservice technician.
Related information
Location of exterior lights (p. 559)
Removing the plastic cover to replace bulbs (p. 559)
Replacing the low beam headlight bulbs(p. 560)
Replacing the high beam headlight bulbs(p. 561)
Replacing daytime running lights/frontparking light bulbs (p. 562)
Replacing front turn signal bulbs(p. 563)
Replacing the rear fog light bulb (p. 563)
Bulb specifications (p. 566)
15
Some vehicles do not have any light bulbs.
16 An authorized Volvo workshop is recommended.
17 LED (Light Emitting Diode)

MAINTENANCE AND SERVICE
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* Option/accessory.559
Removing the plastic cover to replace bulbs The headlight bulbs can be replaced without the assistance of a workshop, but before abulb can be replaced, the plastic cover overthe headlight needs to be removed.
–Release the pins in the plastic cover's four clips by pressing them down with ascrewdriver or similar object and removethe covering.
NOTE
To bear in mind when refitting the cover- ing:
The pin in the clip must be pressedback completely before the clip is rein-stalled in the covering.
When the covering is reinstalled, thepin must be pressed in until the endsurface is level with the surface of theclip.
Related information
Replacing bulbs (p. 558)
Replacing the low beam headlight bulbs (p. 560)
Replacing the high beam headlight bulbs(p. 561)
Replacing daytime running lights/frontparking light bulbs (p. 562)
Replacing front turn signal bulbs(p. 563)
Bulb specifications (p. 566)
Location of exterior lights The vehicle's exterior lighting consists of sev- eral different bulbs. LED 18
bulbs must be
replaced by a workshop. An authorized Volvo workshop is recommended.
Front bulbs (vehicles with halogen headlights)
Low beams
High beams
Daytime running light/parking light
Turn signal
Front fog light/cornering illumination *
(LED)
18 LED (Light Emmitting Diode)

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MAINTENANCE AND SERVICE
560
Rear bulbs
Fog light
Parking light (LED)
Turn signal19
Parking light (LED)
Brake light (LED)
Parking light (LED)
Backup light 19
Brake light
‒ central, high-mounted (LED)
Related information
Replacing bulbs (p. 558)
Bulb specifications (p. 566)
Lighting control and panel (p. 148)
Replacing the low beam headlight bulbs The low beam bulbs in the halogen head- lights can be changed without the help of aworkshop.
Before the bulbs can be replaced, the plastic covering over the headlight must be removed.
CAUTION
Never touch the bulb glass with your bare fingers. Grease and oils from your fingersvaporize in the heat and will leave adeposit on the reflector, which may dam-age it.
19
Contact a workshop for replacement ‒ an authorized Volvo workshop is recommended.

MAINTENANCE AND SERVICE
561
Left headlight.
1. Remove the low beam rubber cover fromthe headlight housing.
2. Remove the connector from the bulb.
3. Remove the bulb by pressing it slightly upward and then pulling it out.
4. Insert the new bulb in the socket. The bulb's guiding pin should point straight up.
5. Press the connector into place.
6. Put the rubber cover back in place.
Related information
Location of exterior lights (p. 559)
Removing the plastic cover to replace bulbs (p. 559)
Bulb specifications (p. 566)
Replacing the high beam headlight bulbs The high beam bulbs in the halogen head- lights can be changed without the help of aworkshop.
Before the bulbs can be replaced, the plastic covering over the headlight must be removed.
CAUTION
Never touch the bulb glass with your bare fingers. Grease and oils from your fingersvaporize in the heat and will leave adeposit on the reflector, which may dam-age it.
Left headlight.
1. Remove the high beam rubber cover from
the headlight housing. 2. Remove the bulb by turning the bulb
holder upward and then pulling it straight out.
3. Carefully pry the plastic sleeve by the con- nector's locking lug to release it.
4. Remove the connector from the bulb.
5. Replace the bulb.
6. Position the bulb in the socket and turn it downward.
7. Put the rubber cover back in place.
Related information
Location of exterior lights (p. 559)
Removing the plastic cover to replace bulbs (p. 559)
Bulb specifications (p. 566)

MAINTENANCE AND SERVICE
562
Replacing daytime running lights/ front parking light bulbs
The daytime running light/parking light bulbs in the halogen headlights can be changedwithout the help of a workshop.
Before the bulbs can be replaced, the plastic covering over the headlight must be removed.
NOTE
Daytime running lights/parking lights are easier to reach if the high beam headlightbulbs are removed. The high beam head-lights are mounted above and to the side ofthe daytime running lights/parking lights.Remove the high beam headlight bulb byturning the bulb holder upward and thenpulling it straight out.
CAUTION
Never touch the bulb glass with your bare fingers. Grease and oils from your fingersvaporize in the heat and will leave adeposit on the reflector, which may dam-age it.
Left headlight.
1. Remove the daytime running light/parking light rubber cover from the headlight housing.
2. Pull the daytime running light/parking light bulb holder straight out.
3. Remove the bulb by pulling it straight out.
4. Replace the bulb.
5. Position the bulb holder in the socket and push it into place.
6. If the high beam bulb holder has come loose, position it in the socket and turn downward.
7. Put the rubber cover back in place.
Related information
Location of exterior lights (p. 559)
Removing the plastic cover to replacebulbs (p. 559)
Bulb specifications (p. 566)
Replacing the high beam headlight bulbs(p. 561)

MAINTENANCE AND SERVICE
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563
Replacing front turn signal bulbsThe turn signal bulbs in the halogen head- lights can be changed without the help of aworkshop.
Before the bulbs can be replaced, the plastic covering over the headlight must be removed.
Left headlight.
1. Remove the turn signal rubber cover from the headlight housing.
2. Press the retaining catches together and pull the bulb holder straight out.
3. The bulb holder and bulb must be replaced as one unit.
4. Position the bulb holder in the socket and push it into place.
5. Put the rubber cover back in place.
Related information
Location of exterior lights (p. 559)
Removing the plastic cover to replace bulbs (p. 559)
Bulb specifications (p. 566)
Replacing the rear fog light bulb
The rear fog light bulb is located behind a panel on the inside of the trunk lid on thedriver's side.
NOTE
The rear fog light bulb should be replaced by a workshop – an authorized Volvoworkshop is recommended.
To replace the rear fog light bulb:
Rubber cover the trunk lid lock.
1. Remove the rubber cover over the trunk lid lock by moving it from side to side and pulling it straight off. It can be put backinto position by pressing it into place.

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MAINTENANCE AND SERVICE
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Buttons in the trunk lid.
2. Remove the buttons in the trunk lid byinserting a flat object (e.g. a kitchen knife or screwdriver) behind the short sides ofthe button console and prying it out. Theelectrical connector for the buttons doesnot need to be disconnected.
Trunk lid closing handle.
3. The closing handle on the inside of thetrunk lid must be removed on the side of the vehicle in which the fog light is moun-ted. Insert a flat object (kitchen knife,screwdriver, etc.) into the sides of the han-dle console to release the two catcheswhile prying out the handle. To put thehandle back into position, press hard untilthe catches click back into the lockedposition.
CAUTION
Both lock lugs of the closing handle must
be pressed in at the same time before the
handle can be folded out and removed.
Attaching clips on the panel.
4. Remove the three outermost clips on the panel on the inside of the trunk lid on the side in which the fog light is mounted.