2020 HYUNDAI IONIQ brake fluid

7-7
7
Maintenance
At least twice a year:
(i.e., every Spring and Fall)
Check radiator, heater and air con-
ditioning hoses for leaks or dam-
age.
Check windshield washer spray
and wiper operation. Clean wiper
blades with clean cloth dampened
with washer fluid.
Check headlamp alignment.
Check the seat belts for wear and
function.
At least once a year:
Clean body and door drain holes.
Lubricate door hinges and hood
hinges.
Lubricate door and hood locks and
latches.
Lubricate door rubber weather
strips.
Lubricate door checker.
Check the air conditioning system.
Inspect and lubricate reduction
gear 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 follow-
ing conditions apply, you must follow
the Maintenance Under Severe
Usage Conditions.
Repeated short distance driving.
Driving in dusty conditions or
sandy areas.
Extensive use of brakes.
Driving in areas where salt or other
corrosive materials are used.
Driving on rough or muddy roads.
Driving in mountainous areas.
Extended periods of low speed
operation.
Driving for a prolonged period in
cold temperatures and/or extreme-
ly humid climates.
More than 50% driving in heavy
city traffic during hot weather
above 90°F (32°C).
For additional information or assis-
tance see your authorized HYUNDAI
dealer.
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7-9
7
Maintenance
Normal Maintenance Schedule (Cont.)
I : Inspect (Inspect and if necessary, adjust, correct, clean, or replace)
R : Replace or change.
Months4812162024283236404448525660646872768084889296
Miles×1,0005101520253035404550556065707580859095100105110115120
Km×1,00081624324048566472808896104112120128136144152160168176184192
Inspect steering gear rack,
linkage, and bootsIIIIIIII
Inspect drive shafts and bootsIIIIIIII
Inspect air conditioning
compressor, air conditioner
refrigerant and performance
IIIIIIII
Inspect reduction gear fluidIII
Inspect brake pedalIIIIIIII
Inspect brake fluidIIIIIIII
Maintenance
Intervals
Maintenance
Item

7-10
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
Severe driving conditions
A - Repeatedly driving short distances of less than 5 miles
(8 km) in normal temperature or less than 10 miles (16 km)
in freezing temperature
B - Extensive low speed driving for long distances
C - Driving on rough, dusty, muddy, unpaved, graveled or salt-
spread roads
D - Driving in areas using salt or other corrosive materials or in
very cold weatherE - Driving in sandy areas
F - Driving in heavy traffic area over 90°F (32°C)
G- Driving on uphill, downhill, or mountain road
H - Towing a Trailer, or using a camper, or roof rack
I - Driving as a patrol car, taxi, other commercial use or vehicle
towing
J - Driving over 106 mph (170 km/h)
K - Frequently driving in stop-and-go conditions
MAINTENANCE ITEMMAINTENANCE
OPERATIONMAINTENANCE INTERVALSDRIVING
CONDITION
Reduction gear fluid REvery 75,000 miles (120,000 km) C, E, F, G, I
Brake / pads, calipersIMore frequentlyC, D, G, H
Steering gear box, linkage & boots /
lower arm ball joint, upper arm ball jointIMore frequentlyC, D, E, F, G, H, I
Drive shafts and bootsIMore frequentlyC, D, E, F, G, H, I
Climate control air filter
(for evaporator and blower unit)RMore frequentlyC, E

7-11
7
Maintenance
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Cooling System
Check cooling system components,
such as radiator, coolant reservoir,
hoses and connections for leakage
and damage. Replace any damaged
parts.
Coolant
The coolant should be changed at
the intervals specified in the mainte-
nance schedule.
Reduction Gear Fluid
Inspect the reduction gear fluid
according to the maintenance sched-
ule.
Brake Hoses and Lines
Visually check for proper installation,
chafing, cracks, deterioration and
any leakage. Replace any deteriorat-
ed or damaged parts immediately.
Brake Fluid
Check brake fluid level in the brake
fluid reservoir. The level should be
between the MIN and the MAX
marks on the side of the reservoir.
Use only hydraulic brake fluid con-
forming to DOT 4 specification.
Brake Discs, Pads, Calipers
and Rotors
Check the pads for excessive wear,
discs for run out and wear, and
calipers for fluid leakage.
Suspension Mounting Bolts
Check the suspension connections
for looseness or damage. Retighten
to the specified torque.
Steering Gear Box, Linkage &
Boots/Lower Arm Ball Joint
With the vehicle stopped and the
vehicle off, check for excessive free-
play in the steering wheel. Check the
linkage for bends or damage. Check
the dust boots and ball joints for
deterioration, cracks, or damage.
Replace any damaged parts.
Drive Shafts and Boots
Check the drive shafts, boots and
clamps for cracks, deterioration, or
damage. Replace any damaged
parts and, if necessary, repack the
grease.
Air Conditioning Refrigerant
Check the air conditioning lines and
connections for leakage and dam-
age.

7-13
7
Maintenance
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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.If the level is low, add the specified
brake fluid to the MAX level. The level
will fall with accumulated mileage.
This is a normal condition associated
with the wear of the brake linings. If
the fluid level is excessively low, have
the brake system checked by an
authorized HYUNDAI dealer. Do not allow brake fluid to con-
tact the vehicle’s body paint, as
paint damage will result.
Brake fluid, which has been
exposed to open air for an
extended time should NEVER be
used as its quality cannot be
guaranteed. It should be dis-
posed of properly.
Do not use the wrong kind of
brake fluid. A few drops of min-
eral based oil, such as engine
oil, in your brake system can
damage brake system parts.
Information
Use only the specified brake fluid
(refer to "Recommended Lubricants
and Capacities" in chapter 8).
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NOTICE
If the brake system requires fre-
quent additions of fluid this
could indicate a leak in the
brake system. Have the vehicle
inspected by an authorized
HYUNDAI dealer.
WARNING
Do not allow brake fluid to come
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.
WARNING
OAEE076003

8-6
Specifications, Consumer information and Reporting safety defects
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To help achieve proper vehicle performance and durability, use only lubricants of the proper quality.
These lubricants and fluids are recommended for use in your vehicle.
Lubricant Volume Classification
Reduction gear fluid1.0 ~ 1.1 US qt.
(1.0 ~ 1.1 l)70W, API GL-4, TCGO-9(MS517-14)
Coolantwithout heat pump4.33 ~ 4.44 US qt.
(4.1 ~ 4.2 l)
Designated coolant water for electric vehicles
with heat pump4.86 ~ 4.97 US qt.
(4.6 ~ 4.7 l)
Brake fluid0.74~0.85 US qt.
(0.7~0.8 l)SAE J1704 DOT-4 LV,
FMVSS 116 DOT-4,
ISO4925 CLASS-6

I-2
Accessing your vehicle .....................................................3-3
Immobilizer System .....................................................3-8
Smart Key ....................................................................3-3
Air bag - Advanced Supplemental Restraint System .....2-47
Additional Safety Precautions ....................................2-69
Air Bag Warning Labels.............................................2-70
How Does the Air Bag System Operate? ...................2-53
Occupant Classification System (OCS) .....................2-58
SRS Care ....................................................................2-68
What to Expect After an Air Bag Inflates ..................2-57
Where Are the Air Bags? ...........................................2-49
Why Didn't My Air Bag Go Off in a Collision?........2-63
Air Conditioning System ..................................................8-5
Appearance Care .............................................................7-63
Exterior Care ..............................................................7-63
Interior Care ...............................................................7-69
Automatic climate control system ................................3-119
Automatic Heating and Air Conditioning ................3-120
Manual Heating and Air Conditioning .....................3-121
System Maintenance ................................................3-130
System Operation .....................................................3-128Battery(12V) ...................................................................7-20
Battery Recharging .....................................................7-21
For Best Battery Service ............................................7-21
Reset Features ............................................................7-22
Before driving ...................................................................5-3
Before Entering the Vehicle .........................................5-3
Before Starting .............................................................5-3
Blind-spot Collision Warning (BCW) ...........................5-71
Declaration of conformity .........................................5-82
System description .....................................................5-71
System setting and operation .....................................5-72
Warning message and system control ........................5-74
Brake Fluid .....................................................................7-13
Checking the Brake Fluid Level ................................7-13
Braking system ..............................................................5-26
Anti-lock Brake System (ABS)..................................5-36
Auto Hold ...................................................................5-32
Disc Brake Wear Indicator .........................................5-27
Electronic Parking Brake (EPB) ................................5-27
Electronic Stability Control (ESC).............................5-38
Good Braking Practices..............................................5-44
Hill-Start Assist Control (HAC) .................................5-43
Power Brakes..............................................................5-26
Vehicle Stability Management (VSM) .......................5-42
Bulb Wattage .....................................................................8-3
Index
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