HSG Hyundai Ioniq Hybrid 2018 Owner's Manual

H50
Service Plug
Never touch the service plug.
Service plug is attached to high
voltage hybrid battery system.
Touching the service plug will
result in death or serious injury.
Service personnel should follow
procedure in service manual.
DANGER
OAEQ046018
SAFETY PRECAUTIONS FOR HYBRID SYSTEM (CONT.)
(Continued)
•Do not drop water or liquid on
to HPCU, HSG, motor and
fuses. The hybrid system com-
ponents are covered. If you
drop water or liquid on to
hybrid system components, it
may result in electric shock.
This hybrid vehicle uses the
hybrid battery system inverter
and converter to generate high
voltage. High voltage in the
hybrid battery system is very
dangerous and may cause
severe burns and electric
shock. This may result in seri-
ous injury or death.
•For your safety, never touch,
replace, disassemble or remove
the hybrid battery system
including components, cables
and connectors. Severe burns
or electric shock may result in
serious injury or death when
you fail to follow this warning.
•When the hybrid battery sys-
tem operates, the hybrid bat-
tery system can be hot. Always
be careful because burns or
electric shock may be caused
by high voltage.
(Continued)
WARNING

7
Maintenance
7
Maintenance
Engine compartment .............................................7-3
Maintenance services ...........................................7-5
Owner's responsibility ......................................................7-5
Owner maintenance precautions ..................................7-5
Owner maintenance ...............................................7-6
How to Disconnect the (-) Cable
for Regular Maintenance ................................................7-6
Owner maintenance schedule ........................................7-7
Scheduled maintenance services.........................7-8
Normal maintenance schedule
- For Europe (except Russia) ........................................7-9
Maintenance under severe usage conditions
- For Europe (except Russia) ......................................7-13
Normal maintenance schedule
- Except Europe (but include Russia) ........................7-15
Maintenance under severe usage conditions
- Except Europe (but include Russia) ........................7-19
Explanation of scheduled maintenance items .7-21
Engine oil ..............................................................7-23
Checking the engine oil level .......................................7-23
Checking the engine oil and filter ..............................7-24
Engine coolant/inverter coolant .......................7-25
Checking the coolant level ...........................................7-25
Changing coolant.............................................................7-28
Hybrid starter & generator (HSG) belt.............7-29
Checking the hybrid starter &
generator (HSG) belt ......................................................7-29
Brake fluid ............................................................7-29
Checking the brake fluid level .....................................7-29
Washer fluid .........................................................7-30
Checking the washer fluid level ..................................7-30
Parking brake .......................................................7-31
Checking the parking brake .........................................7-31
Air cleaner ............................................................7-31
Filter replacement ...........................................................7-31
Climate control air filter .....................................7-33
Filter inspection ...............................................................7-33
Wiper blades .........................................................7-35
Blade inspection ..............................................................7-35
Blade replacement ..........................................................7-35
Battery (12 volt, Plug-in hybrid vehicle) .........7-38
For best battery service................................................7-39
Battery capacity label ....................................................7-40
Battery recharging .........................................................7-40
Reset features .................................................................7-41
7

7-10
Maintenance
Normal maintenance schedule - For Europe (except Russia)
I : Inspect and if necessary, adjust, correct, clean or replace.
R : Replace or change.
*
3: For your convenience, it can be replaced prior to it's interval when you do maintenance of other items.
*4: The fuel filter is considered to be maintenance free but periodic inspection is recommended for this maintenance schedule
depends on fuel quality. If there are some important matters like fuel flow restriction, surging, loss of power, hard starting problem
etc, we recommend replacing the fuel filter immediately regardless of maintenance schedule and consulting with an authorized
HYUNDAI dealer for details.
*
5: Inspect HSG belt for evidence of cuts, crocks, excessive wear or oil saturation and replace if necessary.
If drive belt noise occurred, readjust drive belt tension before replace.
Number of months or driving distance, whichever comes first
Months1224364860728496
Miles×1,0001020304050607080
Km×1,000153045607590105120
Spark plugs *3Replace every 165,000 km (102,500 miles)
Vapor hose and fuel filler capII
Fuel tank air filterII
Vacuum hoseIIIIIIII
Fuel filter *4II
Fuel lines, hoses and connectionsII
HSG (Hybrid Starter & Generator) belt *5Inspect every 15,000 km (10,000 miles) or 12 months,
and replace every 105,000 km (70,000 miles) or 48 months
MAINTENANCE
INTERVALS
MAINTENANCE
ITEM

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

7-16
Maintenance
Normal maintenance schedule - Except Europe (but include Russia)
Number of months or driving distance, whichever comes first
Months1224364860728496
Miles×1,0001020304050607080
Km×1,000153045607590105120
Spark plugs *4Replace every 165,000 km (102,500 miles)
Vapor hose and fuel filler capII
Fuel tank air filterIRIR
Vacuum hoseIIIIIIII
Fuel filter *5IRIR
Fuel lines, hoses and connectionsII
HSG (Hybrid Starter & Generator) belt *6Inspect every 15,000 km (10,000 miles) or 12 months,
and replace every 105,000km (70,000 miles) or 48 months
MAINTENANCE
INTERVALS
MAINTENANCE
ITEM
I : Inspect and if necessary, adjust, correct, clean or replace.
R : Replace or change.
*
4: For your convenience, it can be replaced prior to it's interval when you do maintenance of other items.
*5: The fuel filter is considered to be maintenance free but periodic inspection is recommended for this maintenance schedule
depends on fuel quality. If there are some important matters like fuel flow restriction, surging, loss of power, hard starting prob-
lem etc, we recommend replacing the fuel filter immediately regardless of maintenance schedule and consulting with an author-
ized HYUNDAI dealer for details.
*
6: Inspect HSG belt for evidence of cuts, crocks, excessive wear or oil saturation and replace if necessary.
If drive belt noise occurred, readjust drive belt tension before replace.

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.

7-21
7
Maintenance
EXPLANATION OF SCHEDULED MAINTENANCE ITEMS
Engine oil and filter
The engine oil and filter should be
changed at the intervals specified in
the maintenance schedule. If the
vehicle is being driven in severe con-
ditions, more frequent oil and filter
changes are required.
HSG (Hybrid starter & genera-
tor) belt
The HSG belt should be changed at
the intervals specified in the mainte-
nance schedule.
Fuel lines, fuel hoses and con-
nections
Check the fuel lines, fuel hoses and
connections for leakage and dam-
age. We recommend an authorized
HYUNDAI dealer replace any dam-
aged or leaking parts immediately.
Fuel filter
A clogged filter can limit the speed at
which the vehicle may be driven,
damage the emission system and
cause multiple issues such as hard
starting. If an excessive amount of
foreign matter accumulates in the
fuel tank, the filter may require
replacement more frequently. After
installing a new filter, run the engine
for several minutes, and check for
leaks at the connections. Fuel filters
should be installed by an authorized
HYUNDAI dealer.
Vapor hose and fuel filler cap
The vapor hose and fuel filler cap
should be inspected at those inter-
vals specified in the maintenance
schedule. Make sure a new vapor
hose or fuel filler cap is correctly
replaced.
Air cleaner filter
A genuine HYUNDAI air cleaner filter
is recommended when the filter is
replaced.
Spark plugs
Make sure to install new spark plugs
of the correct heat range.
Cooling system
Check cooling system components,
such as radiator, coolant reservoir,
hoses and connections for leakage
and damage. Replace any damaged
parts.
Engine coolant/inverter
coolant
The coolant should be changed at
the intervals specified in the mainte-
nance schedule.

7-29
7
Maintenance
HYBRID STARTER & GENERATOR (HSG) BELT
Checking the hybrid starter &
generator (HSG) belt
We recommend that you have the
hybrid starter & generator (HSG)
belt inspected or replaced according
to the Maintenance Schedule in this
chapter by an authorized HYUNDAI
dealer.
Checking the brake fluid level
Check the fluid level in the reservoir
periodically. The fluid level should be
between MAX and MIN marks on the
side of the reservoir.
Before removing the reservoir cap
and adding brake fluid, clean the
area around the reservoir cap thor-
oughly to prevent brake fluid contam-
ination.
•Turn the vehicle off while you
inspect the engine or hybrid
starter & generator(HSG) belt.
Otherwise it may result in
serious injury.
•Keep hands, clothing etc.
away from the hybrid starter &
generator (HSG) belt.
WARNING
When the HSG belt is worn out or
damaged, replace the belt.
Otherwise, it may cause engine
overheating or battery discharge.
CAUTION
OAE076008
BRAKE FLUID

I-6
Front seat adjustment......................................................2-7
Manual adjustment.......................................................2-8
Power adjustment.......................................................2-10
Seatback pocket .........................................................2-13
Front seat headrests
Forward and rearward adjustment .............................2-18
Removal/Reinstall......................................................2-18
Fuel filler door
Hybrid vehicle ...........................................................3-39
Plug-in hybrid vehicle ...............................................3-42
Fuel gauge.....................................................................3-49
Fuel requirements ...........................................................F-6
Fuse switch ...................................................................7-55
Fuse/relay panel description ................................................
Engine compartment fuse panel ................................7-62
Instrument panel fuse panel .......................................7-57
Fuses .............................................................................7-53
Engine compartment panel fuse replacement ............7-55
Fuse switch ................................................................7-55
Fuse/relay panel description ......................................7-57
Instrument panel fuse replacement ............................7-54
Main fuse ...................................................................7-56
Multi fuse ...................................................................7-56
Gauges and meters........................................................3-44
Glove box ...................................................................3-145
Gross vehicle weight ......................................................8-5Hazard warning flasher...................................................6-2
Hazardous driving conditions .......................................5-96
Headlamp bulb replacement .........................................7-67
Headlamp delay function ............................................3-111
Headlamp leveling device ..........................................3-112
Headlamp position ......................................................3-108
Headrest ........................................................................2-16
Front seat headrests ...................................................2-17
Rear seat headrests.....................................................2-20
Heated steering wheel...................................................3-21
Heater..........................................................................3-127
Height adjustment .........................................................2-30
High beam operation ..................................................3-108
Highway driving ...........................................................5-98
Hill-start assist control (HAC) .....................................5-38
Hood .............................................................................3-36
Horn ..............................................................................3-22
How to use this manual ..................................................F-5
Hybrid battery SOC (State of Charge) gauge...............3-50
Hybrid starter&generator (HSG) belt ...........................7-29
Index
H
G