Hyundai Sonata Plug-in Hybrid (2017 year). Manual

Maintenance

Maintenance under severe usage conditions

The following items must be serviced more frequently on cars normally used under severe driving conditions.

Refer to the chart below for the appropriate maintenance intervals.

R : Replace I : Inspect and, after inspection, clean, adjust, repair or replace if necessary

MAINTENANCE

DRIVING

MAINTENANCE ITEM

MAINTENANCE INTERVALS

OPERATION

CONDITION

A, B, C, D, E,

Engine oil and filter

Every 3,750 miles (6,000 km) or 6 months

F, G, H, I, K

Air cleaner filter

More frequently

C, E

Spark plugs

More frequently

B, H

A, C, D, E, F,

Automatic transmission fluid

Every 60,000 miles (96,000 km)

G, H, I, K

Every 30,000 miles (48,000 km)

or 24 months

HSG (Hybrid Starter&Generator) belt

C, D, E, L

Every 3,750 miles (6,000 km) or 6 months

Front brake disc/pads, calipers

More frequently

C, D, G, H

7-22

MAINTENANCE

DRIVING

MAINTENANCE ITEM

MAINTENANCE INTERVALS

OPERATION

CONDITION

Rear brake disc/pads

More frequently

C, D, G, F

Parking brake

More frequently

C, D, G, H

Steering gear box, linkage & boots/lower

More frequently

C, D, E, F, G, H, I

arm ball joint, upper arm ball joint

C, D, E, F, G,

Drive shafts and boots

Every 7,500 miles (12,000 km) or 6 months

H, I, J

Climate control air filter

More frequently

C, E

(for evaporator and blower unit)

Severe driving conditions

A-Repeatedly driving short distance of less than 5 miles (8 km)

F-Driving in heavy traffic area over 90°F (32°C)

in normal temperature or less than 10 miles (16 km) in freez-

G-Driving on uphill, downhill, or mountain road

ing temperature

H-Towing a Trailer, or using a camper, or roof rack

B-Extensive engine idling or low speed driving for long dis-

- Driving as a patrol car, taxi, other commercial use or vehicle

tances

towing

C-Driving on rough, dusty, muddy, unpaved, graveled or salt-

J-Driving over 106 mph (170 km/h)

spread roads

K-Frequently driving in stop-and-go conditions

D-Driving in areas using salt or other corrosive materials or in

very cold weather

E-Driving in sandy areas

7-23

Maintenance

EXPLANATION OF SCHEDULED MAINTENANCE ITEMS

Engine oil and filter

Fuel filter

Vapor hose and fuel filler cap

The engine oil and filter should be

A clogged filter can limit the speed at

The vapor hose and fuel filler cap

changed at the intervals specified in

which the vehicle may be driven,

should be inspected at those inter-

the maintenance schedule. If the car

damage the emission system and

vals specified in the maintenance

is being driven in severe conditions,

cause multiple issues such as hard

schedule. Make sure a new vapor

more frequent oil and filter changes

starting. If an excessive amount of

hose or fuel filler cap is correctly

are required.

foreign matter accumulates in the

replaced.

fuel tank, the filter may require

replacement more frequently. After

Air cleaner filter

HSG (Hybrid starter & genera-

installing a new filter, run the engine

tor) belt

A genuine HYUNDAI air cleaner filter

for several minutes, and check for

is recommended when the filter is

The HSG belt should be changed at

leaks at the connections. Fuel filters

replaced.

the intervals specified in the mainte-

should be installed by an authorized

nance schedule.

HYUNDAI dealer.

Spark plugs

Fuel lines, fuel hoses and con-

Make sure to install new spark plugs

nections

of the correct heat range.

Check the fuel lines, fuel hoses and

connections for leakage and dam-

age. Have an authorized HYUNDAI

dealer replace any damaged or leak-

ing parts immediately.

7-24

Cooling system

Automatic transmission fluid

Brake hoses and lines

Check cooling system components,

Automatic transmission fluid should

Visually check for proper installation,

such as radiator, coolant reservoir,

not be checked under normal usage

chafing, cracks, deterioration and

hoses and connections for leakage

conditions. But in severe conditions,

any leakage. Replace any deteriorat-

and damage. Replace any damaged

the fluid should be changed at an

ed or damaged parts immediately.

parts.

authorized HYUNDAI dealer in accor-

dance to the scheduled maintenance

Brake fluid

at the beginning of this chapter.

Engine coolant/Inverter

Check brake fluid level in the brake

coolant

NOTICE

fluid reservoir. The level should be

The coolant should be changed at

between the MIN and the MAX

Automatic transmission fluid color

the intervals specified in the mainte-

marks on the side of the reservoir.

is basically red.

nance schedule.

Use only hydraulic brake fluid con-

As the vehicle is driven, the auto-

forming to DOT 3 or DOT 4 specifi-

matic transmission fluid will begin

cation.

to look darker. This is a normal

condition and you should not

Parking brake

judge the need to replace the fluid

based upon the changed color.

Inspect the parking brake system

including the parking brake pedal

CAUTION

and cables.

The use of a non-specified fluid

could result in transmission mal-

function and failure. Use only the

specified automatic transmission

fluid

(refer to "Recommended

Lubricants and Capacities" in

chapter 8).

7-25

Maintenance

Brake discs, pads, calipers

Steering gear box, linkage &

and rotors

boots/lower arm ball joint

Check the pads for excessive wear,

With the vehicle stopped and the

discs for run out and wear, and

hybrid system off, check for exces-

calipers for fluid leakage.

sive free-play in the steering wheel.

Check the linkage for bends or dam-

age. Check the dust boots and ball

Exhaust pipe and muffler

joints for deterioration, cracks, or

Visually inspect the exhaust pipes,

damage.

muffler and hangers for cracks, dete-

Replace any damaged parts.

rioration, or damage. Start the

engine and listen carefully for any

exhaust gas leakage. Tighten con-

Drive shafts and boots

nections or replace parts as neces-

Check the drive shafts, boots and

sary.

clamps for cracks, deterioration, or

damage. Replace any damaged

Suspension mounting bolts

parts and, if necessary, repack the

grease.

Check the suspension connections

for looseness or damage. Retighten

to the specified torque.

Air conditioning refrigerant

Check the air conditioning lines and

connections for leakage and damage.

7-26

ENGINE OIL

Checking the engine oil level

NOTICE

1. Follow all of the oil manufacturer’s

To prevent damage to your

precautions.

engine:

2. Be sure the vehicle is on level

• Do not overfill with engine oil.

ground in P (Park) with the park-

Add oil in small quantities and

ing brake set and the wheels

recheck level to ensure engine

blocked.

is not overfilled.

3. Turn the engine on and allow the

• Do not spill engine oil when

engine to reach normal operating

adding or changing engine oil.

temperature.

Use a funnel to help prevent oil

4. Turn the hybrid system off and

OLFH075002N

from being spilled on engine

wait about five minutes for the oil

components. Wipe off spilled oil

6. Pull the dipstick out again and

to return to the oil pan.

immediately

check the level. The level should

5. Pull the dipstick out, wipe it clean,

be between F and L.

and re-insert it fully.

7. If it is near or at L, add enough oil

to bring the level to F.

7-27

Maintenance

Checking the engine oil and

WARNING

filter

CALIFORNIA PROPOSITION 65

WARNING

Engine oil contains chemicals

known to the State of California

to cause cancer, birth defects

and reproductive harm. Used

engine oil may cause irritation

or cancer of the skin if left in

OLFH074003

contact with the skin for pro-

longed periods of time. Always

NOTICE

protect your skin by washing

Use only the specified engine oil

your hands thoroughly with

(refer

"Recommended

Have engine oil and filter changed by

soap and warm water as soon

Lubricants and Capacities" in

an authorized HYUNDAI dealer

as possible after handling used

chapter 8).

according to the Maintenance

oil.

Schedule at the beginning of this

chapter.

7-28

ENGINE COOLANT/INVERTER COOLANT

The high-pressure cooling system

Checking the engine/inverter

WARNING

has a reservoir filled with year-round

coolant level

antifreeze coolant. The reservoir is

■ Radiator cap

Never remove the

filled at the factory.

radiator cap and/or

Check the antifreeze protection and

inverter coolant cap

coolant level at least once a year, at

or the drain plug

the beginning of the winter season

while the engine and

and before traveling to a colder cli-

radiator are hot. Hot coolant

mate.

and steam may blow out under

pressure, causing serious

injury.

Turn the hybrid system off and

OLFH074005

■ Inverter coolant cap

wait until the engine cools

down. Use extreme care when

removing the radiator cap

and/or inverter coolant cap.

Wrap a thick towel around it,

and turn it counterclockwise

slowly to the first stop. Step

back while the pressure is

released from the cooling sys-

tem. When you are sure all the

pressure has been released,

OLFH074006

press down on the cap, using a

thick towel, and continue turn-

ing counterclockwise to remove

it.

7-29

Maintenance

The electric motor for the cooling fan

Engine coolant

i Information

is controlled by engine coolant tem-

The engine coolant and/or inverter

perature, refrigerant pressure and

coolant level is influenced by the

vehicle speed. As the engine coolant

hybrid system temperature. Before

temperature decreases, the electric

checking or refilling the engine

motor will automatically shut off. This

coolant and/or inverter coolant, turn

is a normal condition. If your vehicle

the hybrid vehicle off.

is equipped with GDI, the electric

motor for the cooling fan may begin

to operate at any time and continue

WARNING

to operate until you disconnect the

negative battery cable.

The electric motor for

the cooling fan may

OLF074006N

continue to operate

or start up when the

Check the condition and connections

engine is not running

of all cooling system hoses and

and can cause serious injury.

heater hoses. Replace any swollen

Keep hands, clothing and tools

or deteriorated hoses.

away from the rotating fan

The coolant level should be filled

blades of the cooling fan.

between the F and the L marks on

the side of the coolant reservoir

when the engine is cool.

If the coolant level is low, add enough

distilled

(deionized) water to bring

the level to the F mark, but do not

overfill. If frequent additions are

required, See an authorized

HYUNDAI dealer for a cooling sys-

tem inspection.

7-30

Inverter coolant

Recommended coolant

For mixing percentage, refer to the

following table:

•

When adding coolant, use only

deionized water, distilled water or

Mixture Percentage

soft water for your vehicle and

Ambient

(volume)

never mix hard water in the coolant

Temperature

Antifreeze

Water

filled at the factory.

5°F (-15°C)

•

An improper coolant mixture can

-13°F (-25°C)

result in severe malfunction or

engine/ hybrid system damage.

-31°F (-35°C)

-49°F (-45°C)

•

The engine in your vehicle has alu-

minum engine parts and must be

protected by an phosphate-based

Information

OLFH074006

ethylene glycol coolant to prevent

corrosion and freezing.

If in doubt about the mix ratio, a 50%

Check the condition and connections

•

Do not use alcohol or methanol

water and 50% antifreeze mix is the

of all cooling system hoses and

coolant or mix them with the spec-

easiest to mix together as it will be the

heater hoses. Replace any swollen

ified coolant.

same quantity of each. It is suitable to

or deteriorated hoses.

use for most temperature ranges of -

The coolant level should be filled

•

Do not use a solution that contains

31°F and higher.

between the MAX and the MIN

more than 60% antifreeze or less

marks on the side of the coolant

than 35% antifreeze, which would

reservoir when the engine is cool.

reduce the effectiveness of the

solution.

If the coolant level is low, add enough

distilled

(deionized) water to bring

the level to the MAX mark, but do not

overfill. If frequent additions are

required, we recommend that you

see an authorized HYUNDAI dealer

for a cooling system inspection.

7-31

Maintenance

HYBRID STARTER & GENERATOR (HSG) BELT

Changing engine coolant

Checking the hybrid starter &

WARNING

generator (HSG) belt

Have coolant changed by an author-

ized HYUNDAI dealer according to

Have the hybrid starter & generator

•

Turn the vehicle off while you

the Maintenance Schedule at the

(HSG) belt inspected or replaced

inspect the engine or hybrid

beginning of this chapter.

according to the Maintenance

starter & generator(HSG) belt.

Schedule in this chapter by an

Otherwise it may result in

WARNING

authorized HYUNDAI dealer.

serious injury.

•

Keep hands, clothing etc.

Do not use engine coolant or

CAUTION

away from the hybrid starter &

antifreeze in the washer fluid

generator (HSG) belt.

reservoir.

When the HSG belt is worn out

Engine coolant can severely

or damaged, replace the belt.

obscure visibility when sprayed

Otherwise, it may cause engine

on the windshield and may

overheating or battery dis-

cause loss of vehicle control

charge.

resulting in an accident.

Engine coolant may also cause

damage to paint and body trim.

NOTICE

To prevent damage to engine

parts, put a thick towel around the

radiator cap before refilling the

coolant to prevent the coolant

from overflowing into engine

parts, such as the generator.

7-32

BRAKE FLUID

Checking the brake fluid level

If the level is low, add the specified

NOTICE

brake fluid to the MAX level. The level

will fall with accumulated mileage.

• Do not allow brake fluid to con-

This is a normal condition associated

tact the vehicle’s body paint, as

with the wear of the brake linings. If

paint damage will result.

the fluid level is excessively low, have

• Brake fluid, which has been

the brake system checked by an

exposed to open air for an

authorized HYUNDAI dealer.

extended time should NEVER be

used as its quality cannot be

guaranteed. It should be dis-

WARNING

posed of properly.

If the brake system requires fre-

• Do not use the wrong kind of

brake fluid. A few drops of miner-

quent additions of fluid this

OLFH074007

could indicate a leak in the

al based oil, such as engine oil, in

Check the fluid level in the reservoir

your brake system can damage

brake system. Have the vehicle

periodically. The fluid level should be

inspected by an authorized

brake system parts.

between MAX and MIN marks on the

HYUNDAI dealer.

side of the reservoir.

Information

Before removing the reservoir cap

Use only the specified brake fluid

and adding brake fluid, clean the

WARNING

(refer to "Recommended Lubricants

area around the reservoir cap thor-

and Capacities" in chapter 8).

oughly to prevent brake fluid contam-

Do not allow brake fluid to come

ination.

in contact with your eyes. If

brake fluid comes in contact

with your eyes, flush your eyes

with clean water for at least 15

minutes and get immediate

medical attention.

7-33

Maintenance

WASHER FLUID

PARKING BRAKE

Checking the washer fluid

Checking the parking brake

WARNING

level

Foot type

To prevent serious injury or

death, take the following safety

precautions when using washer

fluid:

•

Do not use engine coolant or

antifreeze in the washer fluid

reservoir.

Engine coolant can severely

obscure visibility

when

sprayed on the windshield and

may cause loss of vehicle con-

OLFH074008

trol resulting in an accident or

ODH053142

damage to paint and body trim.

Check the fluid level in the washer

Check whether the stroke is within

fluid reservoir and add fluid if neces-

•

Do not allow sparks or flame to

specification when the parking brake

sary. Plain water may be used if

contact the washer fluid or the

pedal is depressed with 44 lb (20 kg,

washer fluid is not available.

washer fluid reservoir. Washer

196 N) of force. Also, the parking

However, use washer solvent with

fluid may contain alcohol and

brake alone should securely hold the

antifreeze characteristics in cold cli-

can be flammable.

vehicle on a fairly steep grade. If the

mates to prevent freezing.

•

Do not drink washer fluid and

stroke is more or less than specified,

avoid contact with skin.

have the parking brake adjusted by

Washer fluid is poisonous to

an authorized HYUNDAI dealer.

humans and animals.

Stroke : 3 notch

•

Keep washer fluid away from

children and animals.

7-34

AIR CLEANER

Filter replacement

OLFH074010

OLF074012

1. Remove the air cleaner filter cover.

3. Pull down the lever to the

OLFH074009

UNLOCK position.

2. Wipe the inside of the air cleaner.

The air cleaner filter can be cleaned

for inspection using compressed air.

Do not attempt to wash or to rinse it,

as water will damage the filter.

If soiled, the air cleaner filter must be

replaced.

7-35

Maintenance

Information

If the vehicle is operated in extremely

dusty or sandy areas, replace the ele-

ment more often than the usual rec-

ommended intervals

(refer to

"Maintenance Under Severe Usage

Conditions" in this chapter).

NOTICE

• Do not drive with the air cleaner

OLF074013

OLF074101K

filter removed. This will result in

4. Replace the air cleaner filter.

5. Pull up the lever (1) to the LOCK

excessive engine wear.

position.

• When removing the air cleaner

6. Install the cover and make sure

filter, be careful that dust or dirt

the inner hooks bosses (2) are

does not enter the air intake, or

hung on the hooks (3).

damage may result.

7. Check if the cover is firmly

• Use HYUNDAI genuine parts,

installed.

use of non-genuine parts could

damage the air flow sensor.

7-36

CLIMATE CONTROL AIR FILTER

Filter inspection

The climate control air filter should

be replaced according to the

Maintenance Schedule. If the vehicle

is operated in severely air-polluted

cities or on dusty rough roads for a

long period, it should be inspected

more frequently and replaced earlier.

When you replace the climate control

air filter, replace it performing the fol-

lowing procedure, and be careful to

avoid damaging other components.

OLF074015

OLF074014

1. With the glove box open, remove

2. Remove the support rod (1).

the stoppers on both sides to

allow the glove box to hang freely

on the hinges.

7-37

Maintenance

NOTICE

Install a new climate control air fil-

ter in the correct direction with the

arrow symbol (↓) facing down-

wards. Otherwise, the climate con-

trol effects may decrease, possi-

bly with a noise.

OLF074016

OLFP075107N

3. Remove the climate control air fil-

4. Replace the climate control air fil-

ter case by pulling out the right

ter.

side of the cover.

5. Reassemble in the reverse order

of disassembly.

7-38

Hyundai Sonata Plug-in Hybrid (2017 year). Manual - part 35