2016 VOLVO XC70 engine

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Engine compartment – overview
The overview shows the main inspection points in the engine compartment.
Coolant expansion tank
Power steering fluid reservoir
Dipstick-engine oil
Filler cap-engine oil
Cover over brake fluid reservoir
Battery
Relay/fuse box
Washer fluid reservoir
Engine compartment - 4-cylinder engines only
Filler cap-engine oil
Coolant expansion tank
Power steering fluid reservoir
Radiator
Brake fluid reservoir
Battery
Relay/fuse box
Washer fluid reservoir
Air cleaner
The appearance of the engine compartment may vary depending on engine model.
WARNING
The cooling fan (located at the front of the engine compartment, behind the radiator)may start or continue to operate (for up to6 minutes) after the engine has beenswitched off.
WARNING
Before performing any operations in the engine compartment, the ignition shouldalways be completely switched off (inmode 0, see Ignition modes (p. 79)) and
there should be no remote keys in the pas-senger compartment. The gear selectorshould be in the P (park) position. If the
engine has been running, wait until it hascooled before touching any components inthe engine compartment. The distributor ignition system operates at very high voltages. Special safety precau-tions must be followed to prevent injury.Always turn the ignition off when:
• Replacing distributor ignition compo- nents e.g. plugs, coil, etc.
• Do not touch any part of the distributorignition system while the engine is run-ning. This may result in unintendedmovements and body injury.

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Related information
•Maintenance – opening/closing hood (p. 327)
• Maintenance – owner maintenance(p. 323)
Engine compartment – engine oil
The correct oil must be used for the stated oil change (service) intervals to apply. The oil level on 4-cylinder engines is checked electronically and is checked using a dipstickon 5- and 6-cylinder engines.
Checking the engine oil (5- and 6-
cylinder engines)
The oil level should be checked at regularintervals, particularly during the period up tothe first scheduled maintenance service.
• See Oil specifications (p. 374) for oil specifications.
• Also, refer to the Warranty and ServiceRecords information booklet for informa-tion on oil change intervals and oil speci-fications.
CAUTION
•Not checking the oil level regularly can result in serious engine damage if theoil level becomes too low.
• Oil that is lower than the specifiedquality can damage the engine.
• Volvo does not recommend the use ofoil additives.
• Always add oil of the same type andviscosity as already used.
• Never fill oil above the
MAX mark. This
could cause an increase in oil con-sumption.
• Oil changes should be carried out by atrained and qualified Volvo servicetechnician.

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Checking and adding oil
G021734
Location of the filler cap and dipstick
NOTE
Before checking the oil: •The car should be parked on a level surface.
• If the engine is warm
, wait for at least
10 – 15 minutes after the engine hasbeen switched off.
G021737
The oil level must be between the MIN and MAX
marks on the dipstick
Checking the oil1. Pull out the dipstick and wipe it with a
lint-free rag.
2. Reinsert the dipstick, pull it out, and check the oil level. The level must be between the MIN and MAX marks.
3. Add oil if necessary. If the level is close to the MIN mark, add approximately
0.5 US quarts (0.5 liters) of oil.
4. Recheck the level and add more oil if necessary until the level is near the MAX
mark.
WARNING
Do not allow oil to spill onto or come into contact with hot exhaust pipe surfaces.
Electronic oil level sensor (4-cylinder engines only)
Oil filler cap
No action is necessary until a message is dis- played, see the following illustration.

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* Option/accessory, for more information, see Introduction.331
Left: digital instrument panel*, Right: analog instrument panel
Message
Oil level
The oil level can be checked when the engine is not running by scrolling to the oil level sen-sor using the thumb wheel on the left steeringwheel lever.
CAUTION
• If Oil service required is displayed,
the oil level may be too high. Take the vehicle to an authorized Volvo work-shop as soon as possible.
• If the oil level sensor indicates that thelevel is too low, using the correct oil,top up with the amount of oil indicatedas soon as possible, see oil specifica-tions (p. 374).
WARNING
Do not allow oil to spill onto or come into contact with hot exhaust pipe surfaces.
Electronically checking the oil levelThe oil level should be checked at regular intervals, particularly during the period up tothe first scheduled maintenance service. To check the oil level:
1. Activate ignition mode
II, see Ignition
modes (p. 79).
2. Turn the thumb wheel on the left steering wheel lever until
Oil level is displayed.
> The oil level will be displayed.
NOTE
• The system cannot detect changes in the oil level immediately. The vehiclemust be driven approximately 20 miles(30 km) or have been parked on levelground with the engine off for5 minutes before the oil level readingwill be correct.
• If the necessary conditions are not metfor checking the oil level electronically(time interval after the engine wasswitched off, if the vehicle is parked on an incline, etc.),
No values availablewill be displayed. This does
not indi-
cate a problem with the oil level sen- sor.
Engine compartment – coolant
Normally, the coolant does not need to be changed. If the system must be drained, con-sult a trained and qualified Volvo service tech-nician.
Level check and filling
Location of the coolant reservoir
See Fuel tank volume – specification and vol- ume (p. 377) for information on cooling sys-tem capacities.

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CAUTION
•If necessary, top up the cooling sys- tem with Volvo Genuine Coolant/Anti-freeze only (a 50/50 mix of water andantifreeze).
• Different types of antifreeze/coolantmay not be mixed.
• If the cooling system is drained, itshould be flushed with clean water orpremixed anti-freeze before it is refilledwith the correct mixture of water/anti-freeze.
• The cooling system must always bekept filled to the correct level, and thelevel must be between the
MIN and
MAX marks. If it is not kept filled, there
can be high local temperatures in theengine which could result in damage.Check coolant regularly!
• Do not top up with water only. Thisreduces the rust-protective and anti-freeze qualities of the coolant and hasa lower boiling point. It can also causedamage to the cooling system if itshould freeze.
• Do not use chlorinated tap water in thevehicle's cooling system.
WARNING
•Never remove the expansion tank cap while the engine is warm. Wait until theengine cools.
• If it is necessary to top off the coolantwhen the engine is warm, unscrew theexpansion tank cap slowly so that theoverpressure dissipates.
Engine compartment – brake fluid
The brake fluid should always be between the MIN
and MAX marks on the inside of the res-
ervoir.
Location of the brake fluid reservoir

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Checking the levelThe fluid reservoir is concealed under the round cover at the rear of the engine com-partment. The round cover must be removedfirst before the reservoir cap can beaccessed. Check, without removing the cap, that there is sufficient fluid in the reservoir. Fluid type: DOT 4 boiling point >536 °F
(>280 °C).Replace : The fluid should be replaced
according to the intervals specified in the Warranty and Service Records Informationbooklet. When driving under extremely hard condi- tions (mountain driving, etc), it may be neces-sary to replace the fluid more often. Consult atrained and qualified Volvo service technician. Always entrust brake fluid changing to a trained and qualified Volvo service technician.
WARNING
• If the fluid level is below the
MIN mark
in the reservoir or if a brake-related message is shown in the informationdisplay: DO NOT DRIVE . Have the car
towed to a trained and qualified Volvoservice technician and have the brakesystem inspected.
• Dot 4 should never be mixed with anyother type of brake fluid.
Filling1. Turn and open the cover.
2. Unscrew the reservoir cap and fill the
fluid. The level must be between the MIN
and MAX marks.
Engine compartment – power steering fluid
The fluid level must be between the MIN and
MAX marks. For capacities and recom-
mended fluid grade, see Fuel tank volume – specification and volume (p. 377).
Check the level frequently. It does not nor- mally require changing.
WARNING
If a problem should occur in the power steering system or if the vehicle has noelectrical current and must be towed, it isstill possible to steer the vehicle. However,keep in mind that greater effort will berequired to turn the steering wheel.

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* Option/accessory, for more information, see Introduction.335
CAUTION
Never touch the glass of bulbs with your fingers. Grease and oils from your fingersvaporize in the heat and will leave adeposit on the reflector, which will damageit.
WARNING
• The engine should not be running when changing bulbs.
• If the engine has been running justprior to replacing bulbs in the head-light housing, please keep in mind thatcomponents in the engine compart-ment will be hot.
WARNING
•
Active Bending Lights* – due to the high voltage used by these headlights,these bulbs should only be replacedby a trained and qualified Volvo serv-ice technician.
• Turn off the lights and remove theremote key from the ignition beforechanging any bulbs.
Related information
•
Bulbs – headlight housing (p. 335)
• Bulbs – vanity mirror lighting (p. 341)
• Bulbs – cargo area lighting (p. 340)
• Bulbs – license plate lighting (p. 340)
Bulbs – headlight housing
The entire headlight housing must be lifted out when replacing all front bulbs.
Removing the headlight housing
Pull out the headlight housing's locking pins.
Pull the headlight housing straight out.
G010325
CAUTION
When disconnecting the connector, pull on the connector itself and not on the wiring.
Unplug the wiring connector by holding down the clip with your thumb.
Pull the connector out with the other hand.
5. Lift out the headlight housing and place it on a soft surface to avoid scratching thelens.
6. Replace the defective bulb(s).
Reinserting the headlight housing1. Plug in the connector until it clicks into place.
2. Reinstall the headlight housing and lock- ing pins. Check that they are correctlyinserted. The headlight housing must be properly in place and the wiring connector cor-rectly reconnected before the lighting isswitched on or the remote key is insertedinto the ignition slot.
3. Check that the lights function properly.
Related information
• Bulbs – introduction (p. 334)
• Bulbs – cover (p. 336)
• Bulbs – specifications (p. 341)

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Wiper blades – service position
The windshield wiper blades must be in the vertical (service) position for replacement,washing or to lift them away from the wind-shield when e.g., removing ice or snow.
Wiper blades in service position
CAUTION
Be sure the wiper blades are not frozen in position before attempting to move themto the service position.
To put the windshiield wipers in the service position:
1. Insert the remote key into the ignitionslot3
and press the START/STOP
ENGINE button briefly to put the ignition
in mode I (see Ignition modes (p. 79) for
detailed information about the ignition modes).
2. Press the START/STOP ENGINE button
again briefly to switch the ignition off.
3. Within 3 seconds, move the right steering wheel lever up and hold it for at least1 second.
> The wipers will then move to the verti-cal (service) position on the windshield.
The wipers can be returned to the normal position by pressing the START/STOP
ENGINE button briefly to put the ignition in
mode I (or by starting the engine).
CAUTION
If the wiper arms have been folded out from the windshield while in the serviceposition, fold them back against the wind-shield before returning the wipers to thenormal position to help avoid scratchingthe paint on the hood.
Related information
• Engine compartment – washer fluid (p. 344)
3
Not necessary on vehicles with the optional keyless drive.