2019 Hyundai Ioniq Hybrid fuel additives

F8
Introduction
"E85" fuel is an alternative fuel com-
prised of 85 percent ethanol and 15
percent gasoline, and is manufac-
tured exclusively for use in Flexible
Fuel Vehicles. "E85" is not compati-
ble with your vehicle. Use of "E85"
may result in poor engine perform-
ance and damage to your vehicle's
engine and fuel system. HYUNDAI
recommends that customers do not
use fuel with an ethanol content
exceeding 15 percent.
To prevent damage to your vehicle’s
engine and fuel system:
Never use gasohol which con- tains methanol.
Never use gasohol containing more than 15% ethanol.
Never use leaded fuel or leaded gasohol.
Never use "E85" fuel.
Your New Vehicle Limited
Warranty does not cover damage
to the fuel system or any perform-
ance problems caused by the use
of "E85" fuel.
Using Fuel Additives (except Detergent Fuel Additives)
Using fuel additives such as:
- Silicone fuel additive
- Ferrocene (iron-based) fuel additive
- Other metallic-based fuel additives
may result in cylinder misfire, poor
acceleration, engine stalling, dam-
age to the catalyst, or abnormal cor-
rosion, and may cause damage to
the engine resulting in a reduction in
the overall life of the powertrain.
- The Malfunction Indicator Lamp
(MIL) may illuminate.
Damage to the fuel system or per-
formance problem caused by the
use of these fuels or fuel additives
may not be covered by your New
Vehicle Limited Warranty.
Gasoline containing MMT
Some gasoline contains harmful
manganese-based fuel additives
such as
MMT (Methylcyclopentadienyl
Manganese Tricarbonyl
).
HYUNDAI does not recommend the
use of gasoline containing MMT.
This type of fuel can reduce vehicle
performance and affect your emis-
sion control system.
The malfunction indicator lamp on
the cluster may come on.
Detergent Fuel Additives
HYUNDAI recommends that you use
good quality gasolines treated with
detergent additives such as TOP TIER
Detergent Gasoline, which help pre-
vent deposit formation in the engine.
These gasolines will help the engine
run cleaner and enhance performance
of the Emission Control System. For
more information on TOP TIER
Detergent Gasoline, please go to the
website (www
.toptiergas.com).
NOTICE
NOTICE

F9
Introduction
For customers who do not use TOP
Tier Detergent Gasoline regularly,
and have problems starting or the
engine does not run smoothly, deter-
gent-based fuel additives that you
can purchase separately may be
added to the gasoline. If TOP TIER
Detergent Gasoline is not available,
one bottle of additive added to the
fuel tank at every 7,500 miles or 12
months is recommended.
Additives are available from your
authorized HYUNDAI dealer along
with information on how to use them.
Do not mix other additives.
Operation in foreign countries
If you are going to drive your vehicle
in another country, be sure to:
Observe all regulations regarding registration and insurance.
Determine that acceptable fuel is available. This vehicle should not be modi-
fied. Modification of your vehicle
could affect its performance, safety
or durability and may even violate
governmental safety and emis-
sions regulations.
In addition, damage or perform-
ance problems resulting from any
modification may not be covered
under warranty.
If you use unauthorized electronic devices, it may cause the vehicle to
operate abnormally, wire damage,
battery discharge and fire. For your
safety, do not use unauthorized
electronic devices. By following a few simple precautions
for the first 600 miles (1,000 km) you
may add to the performance, econo-
my and life of your vehicle.
Do not race the engine.
While driving, keep your engine
speed (rpm, or revolutions per
minute) between 2,000 rpm and
4,000 rpm.
Do not maintain a single speed for long periods of time, either fast or
slow. Varying engine speed is need-
ed to properly break-in the engine.
Avoid hard stops, except in emer- gencies, to allow the brakes to seat
properly.
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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
Months1224364860728496108120132144156168180
Miles7.51522.53037.54552.56067.575839098105113
Km1224364860728496108120132144156168180
HSG belts *1Inspect every 7,500 miles or 12 months,
and replace every 67,500 miles or 48 months
Engine oil and engine oil filterRRRRRRRRRRRRRRR
Fuel additives *2Add fuel additives every 7,500 miles or 12months
Air cleaner filterIIRIIRIIRIIRIIR
Spark plugsReplace every 97,500 miles
Rotate tiresRotate tires every 7,500 miles
Climate control air filterRRRRRRRRRRRRRRR
Vacuum hoseIIIIIIIIIIIIIII
Engine coolant / Inverter coolantAt first, replace at 120,000 miles or 10 years :
after that, replace every 30,000 miles or 24 months
MAINTENANCE INTERVALS
MAINTENANCE
ITEM
I : Inspect and if necessary, adjust, correct, clean or replace.
R : Replace or change.
*
1: 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.
*
2: If TOP TIER Detergent Gasoline is not available, one bottle of additive is recommended. Additives are available from your authorized HYUNDAI dealer along with information on how to use them. Do not mix other additives.

I-6
Fuel filler doorHybrid vehicle ............................................................3-48
Plug-in hybrid vehicle ................................................3-51
Fuel gauge .......................................................................3\
-58
Fuel requirements .............................................................F-7 Detergent fuel additives ...............................................F-8
Gasoline containing alcohol or methanol ....................F-7
Gasoline containing MMT ...........................................F-8
Operation in foreign countries .....................................F-9
Using fuel additives .....................................................F-8
Fuse switch .....................................................................7-5\
1
Fuses ........................................................................\
.......7-49 Engine compartment panel fuse replacement ............7-51
Fuse switch .................................................................7-51
Fuse/relay panel description .......................................7-53
Instrument panel fuse replacement.............................7-50
Multi fuse ...................................................................7-52
Gauges and meters ..........................................................3-56
Glove box......................................................................3-\
150
Gross vehicle weight.........................................................8-6
Hazard warning flasher .....................................................6-2
Hazardous driving conditions .........................................5-93 Head restraints ................................................................2-16
Front seat head restraints............................................2-17
Rear seat head restraints .............................................2-19
Headlamp delay function ..............................................3-122
Headlamp position ........................................................3-117
Headlight bulb replacement ............................................7-55
Heated steering wheel .....................................................3-17
Heater ........................................................................\
....3-133
Height adjustment ...........................................................2-27
High beam operation .....................................................3-118
Highway driving .............................................................5-95
Hill-start Assist Control (HAC) ......................................5-33
Hood........................................................................\
........3-45
Horn ........................................................................\
........3-17
How to use this manual ....................................................F-6
Hybrid battery SOC (State of Charge) gauge .................3-59
Hybrid starter&generator (HSG) belt .............................7-22
Hybrid vehicle Engine compartment ....................................................1-6
Exterior overview .........................................................1-2
Fuel filler door............................................................3-48
If the 12 volt battery is discharged...............................6-4
If the vehicle will not start ...........................................6-3
Instrument panel overview ...........................................1-5
Interior overview ..........................................................1-4
Jump starting ................................................................6-6
Trip computer ...........................................................3-105
Index
G
H