2020 Hyundai Ioniq Hybrid engine

7-3
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Maintenance
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1. Engine coolant reservoir
2. Engine coolant cap
3. Inverter coolant reservoir
4. Brake fluid reservoir
5. Air cleaner
6. Engine oil dipstick
7. Engine oil filler cap
8. Windscreen washer fluid reservoir
9. Fuse box
OAE08001
The actual engine compartment in the vehicle may differ from the illustration. ■ ■
Hybrid vehicle

7-4
Maintenance
1. Engine coolant reservoir
2. Engine coolant cap
3. Inverter coolant reservoir
4. Brake fluid reservoir
5. Air cleaner
6. Engine oil dipstick
7. Engine oil filler cap
8. Windscreen washer fluid reservoir
9. Fuse box
OAEPH08001
The actual engine compartment in the vehicle may differ from the illustration. ■ ■
Plug-in hybrid vehicle

7-6
Maintenance
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The following lists are vehicle checks
and inspections that should be per-
formed by the owner or an authorised
HYUNDAI dealer at the frequencies
indicated to help ensure safe,
dependable operation of your vehicle.
Any adverse conditions should be
brought to the attention of your deal-
er as soon as possible.
These Owner Maintenance vehicle
checks are generally not covered by
warranties and you may be charged
for labour, parts and lubricants used.
How to Disconnect the (-)
Cable for Regular Maintenance
When the vehicle is under regular
maintenance, make sure to separate
the (-) cable before maintenance.
Separate the (-) cable following the
below instructions.
1. Fold the rear left side seat.
2. Remove the service cover (A) on
the luggage trim.
3. Separate the (-) cable (B).
Reassemble in the reverse order. Performing maintenance work
on a vehicle can be dangerous.
If you lack sufficient knowledge
and experience or the proper
tools and equipment to do the
work, have it done by an autho-
rised HYUNDAI dealer. ALWAYS
follow these precautions for
performing maintenance work:
Park your vehicle on level
ground, move the shift lever
into the P (Park) position,
apply the parking brake and
place the ignition switch in
the LOCK/OFF position.
Block the tyres (front and
back) to prevent the vehicle
from moving.
Remove loose clothing or jew-
ellery that can become entan-
gled in moving parts.
(Continued)
WARNING (Continued)
If you must run the engine
during maintenance, do so
out doors or in an area with
plenty of ventilation.
Keep flames, sparks, or smok-
ing materials away from the
battery and fuel-related parts.
OAE076073N
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7-7
7
Maintenance
Owner maintenance schedule
When you stop for fuel:
Check the engine oil level.
Check the coolant level in the
engine coolant reservoir.
Check the windscreen washer fluid
level.
Check for low or under-inflated
tyres.
Whilst operating your vehicle:
Note any changes in the sound of
the exhaust or any smell of
exhaust fumes in the vehicle.
Check for vibrations in the steering
wheel. Notice if there is any
increased steering effort or loose-
ness in the steering wheel, or
change in its straight-ahead posi-
tion.
Notice if your vehicle constantly
turns slightly or “pulls” to one side
when travelling on smooth, level
road.
When stopping, listen and check
for unusual sounds, pulling to one
side, increased brake pedal travel
or “hard-to-push” brake pedal.
If any slipping or changes in the
operation of your transmission
occurs, check the transmission
fluid level.
Check the dual clutch transmission
P (Park) function.
Check the parking brake.
Check for fluid leaks under your
vehicle (water dripping from the air
conditioning system during or after
use is normal).
At least monthly:
Check coolant level in the engine
coolant reservoir.
Check the operation of all exterior
lights, including the stoplights, turn
signals and hazard warning flashers.
Check the inflation pressures of all
tyres including the spare for tyres
that are worn, show uneven wear,
or are damaged.
Check for loose wheel lug nuts.
At least twice a year:
(i.e., every Spring and Autumn)
Check radiator, heater and air condi-
tioning hoses for leaks or damage.
Check windscreen washer spray
and wiper operation. Clean wiper
blades with a clean cloth damp-
ened with washer fluid.
Check headlamp alignment.
Check muffler, exhaust pipes,
shields and clamps.
Check the seat belts for wear and
function. Be careful when checking your
engine coolant/inverter coolant
level when the engine is hot.
This may result in coolant being
blown out of the opening and
cause serious burns and other
injuries.
WARNING

7-8
Maintenance
At least once a year:
Clean body and door drain holes.
Lubricate door hinges and bonnet
hinges.
Lubricate door and bonnet locks
and latches.
Lubricate door rubber weather
strips.
Check the air conditioning system.
Inspect and lubricate automatic
dual clutch transmission linkage
and controls.
Clean the battery and terminals.
Check the brake fluid level.Follow Normal Maintenance Schedule
if the vehicle is usually operated where
none of the following conditions apply.
If any of the following conditions apply,
you must follow the Maintenance
Under Severe Usage Conditions.
Repeated driving short distance of
less than 8 km (5 miles) in normal
temperature or less than 16 km
(10miles) in freezing temperature
Extensive engine idling or low
speed driving for long distances
Driving on rough, dusty, muddy,
unpaved, graveled or salt-spread
roads
Driving in areas using salt or other
corrosive materials or in very cold
weather
Driving in heavy dust condition
Driving in heavy traffic area
Driving on uphill, downhill, or
mountain road repeatedly Towing a trailer or using a camper,
or roof rack
Driving as a patrol car, taxi, other
commercial use of vehicle towing
Driving over 170 km/h (106
miles/h)
Frequently driving in stop-and-go
conditions
If your vehicle is operated under the
above conditions, you should
inspect, replace or refill more fre-
quently than the following Normal
Maintenance Schedule. After the
periods or distance shown in the
chart, continue to follow the pre-
scribed maintenance intervals.
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7-9
7
Maintenance
Normal maintenance schedule
The following maintenance services must be performed to ensure good emission control and performance.
Keep receipts for all vehicle emission services to protect your warranty. Where both mileage and time are shown, the
frequency of service is determined by whichever occurs first.
Number of months or driving distance, whichever comes first
Months1224364860728496
Km×1,000153045607590105120
Engine oil and engine oil filter *1RRRRRRRR
Fuel additives *3RRRRRRRR
Air cleaner filterIIRIIRII
MAINTENANCE
INTERVALS
MAINTENANCE
ITEM
I : Inspect and if necessary, adjust, correct, clean or replace.
R : Replace or change.
*
1: Check the engine oil level and leak every 500 km (350 miles) or before starting a long trip.
*2: Middle East includes Libya, Algeria, Morocco, Tunisia, Sudan, Egypt and Iran.
*3: If good quality petrol meet Europe Fuel standards (EN228) or equivalents including fuel additives is not available, one bottle of
additive is recommended. Additives are available from your authorised HYUNDAI dealer along with information on how to use
them. Do not mix other additives.

7-11
7
Maintenance
Normal maintenance schedule
Number of months or driving distance, whichever comes first
Months1224364860728496
Km×1,000153045607590105120
Cooling system
Inspect “Coolant level adjustment and leak” every day
At first, inspect 60,000 km or 48 months
after that, inspect every 30,000 km or 24 months
Engine coolant / Inverter coolant *7At first, replace 210,000 km or 120 months
after that, replace every 30,000 km or 24 months*8
Dual clutch transmission fluid *9II
Engine clutch actuator fluidRRRR
Engine clutch actuator hose and lineIIIIIIII
Battery condition (12V, Plug-in hybrid vehicle)IIIIIIII
Brake lines, hoses and connectionsIIIIIIII
Brake pedalIIII
Parking brakeIIII
Brake fluidIIIIIIII
Brake discs and padsIIIIIIII
MAINTENANCE
INTERVALS
MAINTENANCE
ITEM
I : Inspect and if necessary, adjust, correct, clean or replace.
R : Replace or change.
*
7: When adding coolant, use only deionized water or soft water for your vehicle and never mix hard water in the coolant filled at
the factory.
An improper coolant mixture can result in serious malfunction or engine damage.
*
8: For your convenience, it can be replaced prior to it's interval when you do maintenance of other items.
*9: Dual clutch transmission (DCT) fluid should be changed anytime it has been submerged in water.

7-13
7
Maintenance
Maintenance under severe usage conditions
The following items must be serviced more frequently on vehicle mainly used under severe driving conditions.
Refer to the chart below for the appropriate maintenance intervals.
R : Replace I : Inspect and if necessary, adjust, correct, clean or replace
Maintenance itemMaintenance
operationMaintenance intervalsDriving condition
Engine oil and engine oil filterRReplace every 7,500 km or 6 monthsA, B, C, D, E,
F, G, H, I, J, K
Air cleaner filterRReplace more frequently
depending on the conditionC, E
Spark plugs RReplace more frequently
depending on the conditionA, B, H, I
HSG (Hybrid Starter & Generator) belt
REvery 45,000 km or 24 months
C, D, E, K
IEvery 15,000 km or 12 months
Dual clutch transmission fluidREvery 120,000 kmC, D, E, F, G, H, I, J