transmission oil Hyundai Ioniq Hybrid 2018 Owner's Manual

5-112
Maintenance when towing a
trailer
Your vehicle will need service more
often when you regularly pull a trail-
er. Important items to pay particular
attention to include engine oil, auto-
matic transmission fluid, axle lubri-
cant and cooling system fluid. Brake
condition is another important item to
frequently check. If you’re trailering,
it’s a good idea to review these items
before you start your trip. Don’t forget
to also maintain your trailer and
hitch. Follow the maintenance sched-
ule that accompanied your trailer and
check it periodically. Preferably, con-
duct the check at the start of each
day’s driving. Most importantly, all
hitch nuts and bolts should be tight.To prevent vehicle damage:
• Due to higher load during trailer
usage, overheating might occur
on hot days or during uphill driv-
ing. If the coolant gauge indi-
cates over-heating, switch off
the air conditioner and stop the
vehicle in a safe area to cool
down the engine.
• Do not switch off the engine
while the coolant gauge indi-
cates over-heating.
(Keep the engine idle to cool
down the engine)
• When towing check automatic
transmission fluid more fre-
quently.
• If your vehicle is not equipped
with an air conditioner, you
should install a condenser fan
to improve engine performance
when towing a trailer.
NOTICE
Driving your vehicle

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 windshield washer fluid
level.
• Check for low or under-inflated
tires.
While 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 traveling 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
tires including the spare for tires
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 windshield 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

7-13
7
Maintenance
Maintenance under severe usage conditions - For Europe (except Russia)
The following items must be serviced more frequently on cars 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 (5,000 miles)
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 (30,000 miles)
or 24 months
C, D, E, K
IEvery 15,000 km (10,000 miles)
or 12 months
Dual clutch transmission fluidREvery 120,000 km (80,000 miles)C, D, E, F,
G, H, I, J
Steering gear rack, linkage and bootsIInspect more frequently
depending on the conditionC, D, E, F, G
Front suspension ball jointsIInspect more frequently
depending on the conditionC, D, E, F, G

7-19
7
Maintenance
Maintenance under severe usage conditions - Except Europe (but include Russia)
The following items must be serviced more frequently on cars 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 filter
For Middle East *1,
Central & South
AmericaRReplace every 5,000 km (3,000 miles)
or 6 months
A, B, C, D, E,
F, G, H, I, J, K
Except Middle East *1,
Central & South
AmericaRReplace every 7,500 km (5,000 miles)
or 6 months
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
For Middle East *1,
Central & South
AmericaREvery 30,000 km (20,000 miles)
or 24 months
C, D, E, K
IEvery 10,000 km (6,000 miles) or 12 months
Except Middle East *1,
Central & South
AmericaREvery 45,000 km (30,000 miles)
or 24 months
IEvery 15,000 km (10,000 miles) or 12
months
Dual clutch transmission fluidREvery 120,000 km (80,000 miles)C, D, E, F, G, H, I, J
*1: Middle East includes Libya, Algeria, Morocco, Tunisia, Sudan, Egypt and Iran.

8-6
Specifications & Consumer information
RECOMMENDED LUBRICANTS AND CAPACITIES
To help achieve proper engine and powertrain performance and durability, use only lubricants of the proper quality.
The correct lubricants also help promote engine efficiency that results in improved fuel economy.
These lubricants and fluids are recommended for use in your vehicle.
Lubricant Volume Classification
Engine oil *
1*2Recommends
(drain and refill)3.8 l
(4.0 US qt.)5W-30
ACEA A5/B5
Dual clutch transmission fluid1.6 ~ 1.7 l
(1.69 ~ 1.79 US qt.)SAE 70W, API GL-4
HK SYN DCTF 70W (SK)
SPIRAX S6 GHME 70W DCTF (H.K.SHELL)
GS DCTF HD 70W (GS CALTEX)
Engine clutch actuator fluid100 ± 20 cc
(0.105 ± 0.021 US qt.)DOT 3
Engine coolant6.7 l(7.07 US qt.)
Mixture of antifreeze and water
(Phosphate-based Ethylene glycol coolant for aluminum radiator)
Inverter coolant3.2 l(3.38 US qt.)
Brake fluid0.7~0.8 l
(0.74~0.85 US qt.)FMVSS116 DOT-3 or DOT-4
FuelHybrid vehicle45 l(47.5 US qt.)
Refer to “Fuel requirements” in the Introduction chapter.
Plug-in hybrid vehicle43 l(45.4 US qt.)
*1: Refer to the recommended SAE viscosity numbers on the next page.
*2: Engine oils labeled Energy Conserving Oil are now available. Along with other additional benefits, they contribute to fuel economy by reducing
the amount of fuel necessary to overcome engine friction. Often, these improvements are difficult to measure in everyday driving, but in a year’s
time, they can offer significant cost and energy savings.

I-5
Dual clutch transmission ..............................................5-15
DCT warning messages .............................................5-17
Good driving practices...............................................5-24
Manual shift mode .....................................................5-21
Paddle shifter .............................................................5-23
Shift lever position.....................................................5-19
Shift lock system .......................................................5-22
Shift-lock release .......................................................5-22
Dual clutch transmission shift indicator .......................3-53
Easy access function .....................................................3-19
ECO mode ....................................................................5-20
Electric chromic mirror (ECM) ....................................3-23
Electric power steering (EPS) ......................................3-20
Electronic stability control (ESC) ................................5-33
Emergency commodity .................................................6-47
Emergency stop signal (ESS) .......................................5-38
Emergency towing ........................................................6-45
Emission control system ...............................................7-91
Crankcase emission control system ...........................7-92
Evaporative emission control System .......................7-92
Exhaust emission control system...............................7-92
Engine compartment .......................................................1-8
Hybrid vehicle .............................................................7-3
Plug-in hybrid vehicle .................................................7-4
Engine compartment panel fuse replacement...............7-55
Engine coolant ..............................................................7-25Engine coolant temperature guage ...............................3-46
Engine number................................................................8-9
Engine oil......................................................................7-23
Engine specification .......................................................8-2
Engine Start/Stop button.................................................5-9
Evaporative emission control System ..........................7-92
Exhaust emission control system .................................7-92
Explanation of scheduled maintenance items ..............7-21
Exterior care .................................................................7-84
Exterior overview
Front view ....................................................................1-2
Rear view .....................................................................1-3
Flat tire
Changing tires ............................................................6-21
EC Declaration of conformity for Jack .....................6-27
Jack and tools.............................................................6-20
Jack label ...................................................................6-26
Tire Mobility Kit (TMK) ...........................................6-28
Use of compact spare tires.........................................6-24
Floor mat anchor(s) ....................................................3-153
Fluid
Brake fluid .................................................................7-29
Washer fluid ...............................................................7-30
Forced engine activation mode.....................................7-95
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Index
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