2023 HYUNDAI IONIQ 6 coolant level

6
6-47
“Tire Replacement” section in Chapter
9.
• Turn on your headlights to make it easier for others to see you. Using your
headlights when using your windshield
wipers is required in some jurisdictions.
• Driving too fast through large puddles may affect your brakes. If you must go
through puddles, try to drive through
them slowly.
• If you believe your brakes are wet, apply them several times while the
vehicle is moving slowly.
Hydroplaning
If the road is wet enough and you are
going fast enough, your vehicle may have
little or no contact with the road surface
and actually ride on the water. The best
advice is SLOW DOWN when the road is
wet.
The risk of hydroplaning increases as the
depth of tire tread decreases, For more
information, refer to the “Tire
Replacement” section in chapter 9.
Driving in Flooded Areas
Avoid driving through flooded areas
unless you are sure the water is not
deeper than the bottom of the wheel hub.
If you are not sure, turn around and find a
different route. Drive through any water
slowly. Allow adequate stopping distance
because the brake performance can be
reduced.
After driving through water, dry the
brakes by gently applying them several
times while the vehicle is moving slowly.
Highway Driving
Tires
Adjust the tire inflation pressure, as
specified. Under-inflation may overheat
or damage the tires.
Do not install worn-out or damaged tires,
which may reduce traction or fail.
Information Never over-inflate your tires above the
maximum inflation pressure, as specified on
your tires.

Coolant and high voltage battery
Driving at higher speeds on the highway
consumes more electric energy and is
less efficient than driving at a slower,
more moderate speed. Maintain a
moderate speed in order to conserve
electric energy when driving on the
highway.
Be sure to check both the coolant level
and the electric energy level before
driving.
Hyundai_CE_en_US.book Page 47

Driving Your Vehicle
6-50
CAUTION Always check chain installation for proper
mounting after driving about 0.3-0.6 mi.
(0.5-1 km) to ensure safe mounting.
Retighten or remount the chains if they
are loose.

Chain installation
When installing tire chains, follow the
manufacturer’s instructions and mount
them as tightly possible. Drive slowly (less
than 20 mph (30 km/h)) with chains
installed. If you hear the chains
contacting the body or chassis, stop and
tighten them. If they still make contact,
slow down until the noise stops. Remove
the tire chains as soon as you begin
driving on cleared roads.
When mounting snow chains, park the
vehicle on level ground away from traffic.
Turn on the vehicle Hazard Warning
Flasher and place a triangular emergency
warning device behind the vehicle (if
available). Always place the vehicle in P
(Park), apply the parking brake and turn
off the vehicle before installing snow
chains.
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Winter Precautions
Use high quality ethylene glycol coolant
Your vehicle is delivered with high quality
ethylene glycol coolant in the cooling
system. It is the only type of coolant that
should be used because it helps prevent
corrosion in the cooling system,
lubricates the water pump, and prevents
freezing. Be sure to replace or replenish
your coolant in accordance with the
"Scheduled Maintenance Services"
section in chapter 9.
Before winter, have your coolant tested to
make sure that its freezing point is
sufficient for the temperatures
anticipated during the winter.
Hyundai_CE_en_US.book Page 50

6
6-51
Check battery and cables
Winter temperatures affect battery
performance. Inspect the battery and
cables, as specified in chapter 9. The
battery charging level can be inspected
by an authorized HYUNDAI dealer or in a
service station.
To prevent locks from freezing
Spray approved de-icing fluid or glycerin
into key holes. When a lock opening is
already covered with ice, spray approved
de-icing fluid over the ice to remove it.
When an internal part of a lock freezes, try
to thaw it with a heated key. Carefully use
the heated key to avoid an injury.
Use approved window washer anti-freeze
solution
Add authorized window washer
anti-freeze solution, as specified on the
window washer container. Window
washer anti-freeze solution is available
from an authorized HYUNDAI dealer, and
most vehicle accessory outlets. Do not
use coolant or other types of anti-freeze
solution, to prevent any damage to the
vehicle paint.
Do not let your parking brake freeze
Under some conditions, your parking
brake may freeze in the engaged position.
This is most likely to happen when there is
an accumulation of snow or ice around or
near the rear brakes or the brakes are wet.
When there is the risk that your parking
brake may freeze: temporarily apply the
parking brake with the gear in P (Park),
then block the rear wheels, and then
release the parking brake.Do not let ice and snow accumulate
underneath
Under some conditions, snow and ice
may build up under the fenders and
interfere with the steering. When driving
in such conditions during the severe
winter, check underneath the vehicle on a
regular basis, to make sure that the front
wheels and the steering components are
not blocked.
Carry emergency equipment
In accordance with weather conditions,
carry appropriate emergency equipment,
while driving. Some of the items you may
want to carry include tire chains, tow
straps or chains, flashlight, emergency
flares, sand, shovel, jumper cables,
window scraper, gloves, ground cloth,
coveralls, blanket, etc.
Do not place objects or materials in the
motor compartment
Putting objects or materials in the motor
compartment may cause a motor failure.
Such damage is not be covered by the
manufacturer’s warranty.
Hyundai_CE_en_US.book Page 51

9
9. Maintenance
Motor Compartment ....................................................................................................... 9-4
Maintenance Services ..................................................................................................... 9-5Owner’s Responsibility ................................................................................................ 9-5
Owner Maintenance Precautions ............................................................................... 9-5
Owner Maintenance ........................................................................................................9-6 Owner Maintenance Schedule....................................................................................9-6
Scheduled Maintenance Services .................................................................................. 9-7 Normal Maintenance Schedule ..................................................................................9-8
Normal Maintenance Schedule ..................................................................................9-9
Maintenance Under Severe Usage and Low Mileage Conditions .......................... 9-10
Explanation of Scheduled Maintenance Items............................................................. 9-11 Cooling System ........................................................................................................... 9-11
Coolant ........................................................................................................................ 9-11
Gear Fluid .................................................................................................................... 9-11
Brake Hoses and Lines................................................................................................ 9-11
Brake Fluid ................................................................................................................... 9-11
Brake Discs, Pads, Calipers and Rotors ..................................................................... 9-11
Suspension Mounting Bolts ....................................................................................... 9-11
Steering Gear Box, Linkage & Boots/Lower Arm Ball Joint ..................................... 9-11
Drive Shafts and Boots ............................................................................................... 9-11
Air Conditioning Refrigerant ...................................................................................... 9-11
Coolant ............................................................................................................................9-12 Changing Coolant ...................................................................................................... 9-13
Brake Fluid ..................................................................................................................... 9-13 Checking the Brake Fluid Level................................................................................. 9-13
Gear Fluid ....................................................................................................................... 9-13
Washer Fluid .................................................................................................................. 9-14 Checking the Washer Fluid Level ............................................................................. 9-14
Cabin Air Filter ............................................................................................................... 9-14 Filter Inspection ......................................................................................................... 9-14
Filter Replacement..................................................................................................... 9-14
Wiper Blades .................................................................................................................. 9-15 Blade Inspection ........................................................................................................ 9-15
Blade Replacement.................................................................................................... 9-15
Battery (12 V) ...................................................................................................................9-17
Hyundai_CE_en_US.book Page 1

Maintenance
9-6
Owner Maintenance
WARNING 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, we recommend that it is done by an
authorized HYUNDAI dealer. ALWAYS
follow these precautions for performing
maintenance work:
• Park your vehicle on level ground. Shift the vehicle to P (Park), apply the
parking brake, and press the Start/Stop
button to the OFF position.
• Block the tires (front and back) to prevent the vehicle from moving.
Remove loose clothing or jewelry that
can become entangled in moving parts.
• Keep flames, sparks, or smoking materials away from the battery and
motor related parts.

WARNING Make sure to turn the Start/Stop button to
the OFF position to shut down the vehicle
before performing maintenance work on
the vehicle.

The following lists are vehicle checks and
inspections that should be performed by
the owner or an authorized 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 dealer as
soon as possible.
These Owner Maintenance vehicle
checks are generally not covered by
warranties and you may be charged for
labor, parts and lubricants used. The electric control system in the vehicle
may cause malfunction or other negative
impact on the artificial heart and the
artificial internal organs. Be sure to
inquire the impact of the electric control
system on the artificial organs from the
medical product corporation.
Owner Maintenance Schedule
When you stop for charging:
• Check the coolant level in the coolant
reservoir.
• Check the windshield washer fluid level.
• Check for low or under-inflated tires.
WARNING Be careful when checking your coolant
level if the motor compartment is hot.
This may result in coolant being blown
out of the opening and cause serious
burns and other injuries.

While operating your vehicle:
• Check for vibrations in the steering wheel. Notice if there is any increased
steering effort or looseness in the
steering wheel, or change in its
straight-ahead position.
• 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 gear shift occurs,
check the shift gear fluid level.
• Check the shift gear P (Park) function.
• Check the parking brake.
Hyundai_CE_en_US.book Page 6

9
9-7
• 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 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: (for example,
every Spring and Autumn)
• Check radiator, heater and air conditioning hoses for leaks or
damage.
• Check windshield washer spray and wiper operation. Clean wiper blades
with a clean cloth dampened with
washer fluid.
• Check headlight 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.
• Check the air conditioning system.
• Inspect and lubricate shift gear linkage and controls.
• Clean the battery (12 V) and terminals.
• Check the brake fluid level.
Scheduled Maintenance
Services
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 5 mi. (8 km) in normal temperature
or less than 10 mi. (16 km) in freezing
temperature
• 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 with the ambient temperature higher than 90 ºF
(32 ºC) while consuming more than 50%
of electric energy.
• Driving on uphill, downhill, or mountain roads repeatedly
• Towing a trailer or using a camper, or driving with loads on the roof
• Driving as a patrol car, taxi, other commercial use or vehicle towing
• Frequently driving under high speed or rapid acceleration/deceleration
• Frequently driving in stop-and-go conditions
If your vehicle is operated under the
above conditions, you should inspect,
replace or refill more frequently than the
following Normal Maintenance Schedule.
After the periods or distance shown in the
chart, continue to follow the prescribed
maintenance intervals.
Hyundai_CE_en_US.book Page 7

9
9-11
Explanation of Scheduled
Maintenance Items
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 maintenance
schedule.
Gear Fluid
The gear fluid should be inspected and
replaced according to the intervals
specified in the maintenance schedule.
Brake Hoses and Lines
Visually check for proper installation,
chafing, cracks, deterioration and any
leakage. Replace any deteriorated or
damaged parts immediately.
Brake Fluid
Check the 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 conforming to DOT 4
specification.
Brake Discs, Pads, Calipers
and Rotors
Check the pads, the discs, and the rotors
for any excessive wear-out. Inspect
calipers for any 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 damage.
Hyundai_CE_en_US.book Page 11

Maintenance
9-12
Coolant
B9001901
Check the condition and connections of
all cooling system hoses and heater
hoses. Replace any swollen or
deteriorated hoses.
The coolant level should be filled between
the MAX or F and the MIN or L marks on
the side of the coolant reservoir when the
parts in the motor compartment is cool.
If the coolant level is low, have the vehicle
inspected by an authorized HYUNDAI
dealer.
WARNING
Keep hands, clothing, and tools away
from the rotating fan blades of the
cooling fan. The cooling fan may continue
to operate even though the vehicle is
turned off and can cause serious injury.
The electric motor for the cooling fan is
controlled by vehicle coolant
temperature, refrigerant pressure and
vehicle speed. As the vehicle coolant
temperature decreases, the electric
motor will automatically shut off.

Recommended coolant
• When adding coolant, use only deionized water, distilled water, or soft
water for your vehicle and never mix
hard water in the coolant filled at the
factory.
• An incorrect coolant mixture may result in severe malfunction or motor
damage.
• Do not use alcohol or methanol coolant or mix them with the specified coolant.
• Do not use a solution that contains more than 60% antifreeze or less than
35% antifreeze, which could reduce the
effectiveness of the solution.
For mixing percentage, refer to the
following table:
Information If in doubt about the mix ratio, a 50 % water
and 50 % antifreeze mix is the easiest to mix
together because it is the same quantity for
each.

Ambient
TemperatureMixture Percentage (volume)
AntifreezeWater
5 °F (-15 °C) 35 65
-13 °F (-25 °C) 40 60
-31 °F (-35 °C) 50 50
-49 °F (-45 °C) 60 40
Hyundai_CE_en_US.book Page 12