brake fluid HYUNDAI IONIQ ELECTRIC 2021 Owners Manual

1-6
Your vehicle at a glanceM
M OOTTOO RR CC OO MM PPAA RRTTMM EENN TT
1. Coolant reservoir ..............................7-12
2. Brake fluid reservoir ..........................7-16
3. Fuse box ...........................................7-44
4. Battery (12 volt) ................................7-24
5. Coolant cap.......................................7-13
6. Windshield washer fluid reservoir .....7-17
OAEE076001N
The actual motor compartment in the vehicle may differ from the illustration.

3-52
Convenient features of your vehicle
Regenerative BrakeWarning Light
This warning light illuminates :
When the regenerative brake does
not operate and the brake does not
perform well. This causes the Brake
Warning light (red) and Regenerative
Brake Warning Light (yellow) to illu-
minate simultaneously.
In this case, drive safely and have
your vehicle inspected by an author-
ized HYUNDAI dealer.
The operation of the brake pedal may
be more difficult than normal and the
braking distance can increase.
Parking Brake & BrakeFluid Warning Light
This warning light illuminates:
When the POWER button is in the ON position.
- It illuminates for approximately 3seconds.
- It remains on if the parking brake is applied.
When the parking brake is applied.
When the brake fluid level in the reservoir is low.
- If the warning light illuminateswith the parking brake released, it
indicates the brake fluid level in
reservoir is low.
If the brake fluid level in the reser-
voir is low:
1. Drive carefully to the nearest safe location and stop your vehicle.
2. With the vehicle turned off, check the brake fluid level immediately and add fluid as required (For more
information, refer to "Brake
Fluid" in chapter 7) . After adding
brake fluid, check all brake compo-
nents for fluid leaks. If a brake fluid
leak is found, or if the warning light
remains on, or if the brakes do not
operate properly, do not drive the
vehicle. Have the vehicle inspected
by an authorized HYUNDAI dealer.
Dual-diagonal braking system
Your vehicle is equipped with dual-
diagonal braking systems. This
means you still have braking on two
wheels even if one of the dual sys-
tems should fail. With only one of the dual systems
working, more than normal pedal
travel and greater pedal pressure is
required to stop the vehicle.
(yellow)

3-53
Convenient features of your vehicle
3
Also, the vehicle will not stop in as
short a distance with only a portion
of the brake system working.Anti-lock Brake System(ABS) Warning Light
This warning light illuminates:
When the POWER button is in the ON position.
- It illuminates for approximately 3seconds and then goes off.
When there is a malfunction with the ABS (The normal braking sys-
tem will still be operational without
the assistance of the anti-lock
brake system).
In this case, have your vehicle
inspected by an authorized HYUNDAI
dealer.
Electronic
Brake Force
Distribution(EBD) System Warning Light
These two warning lights illuminate
at the same time while driving:
When the ABS and regular brake sys-
tem may not work normally.
In this case, have your vehicle inspect-
ed by an authorized HYUNDAI dealer.
Electronic Brake Force
Distribution (EBD) System
Warning Light
When both ABS and Parking
Brake & Brake Fluid Warning
Lights are on, the brake system
will not work normally and you
may experience an unexpected
and dangerous situation during
sudden braking.
In this case, avoid high speed driving and abrupt braking.
In this case, have your vehicle
inspected by an authorized
HYUNDAI dealer.
WARNING
Parking Brake & Brake Fluid
Warning Light
Driving the vehicle with a warn-
ing light ON is dangerous. If the
Parking Brake & Brake Fluid
Warning Light illuminates with
the parking brake released, itindicates that the brake fluid
level is low.
In this case, have your vehicle
inspected by an authorized
HYUNDAI dealer.
WARNING

3-54
Convenient features of your vehicle
Information - Electronic
Brake Force Distribution
(EBD) System Warning Light
When the ABS Warning Light is on or
both ABS and Parking Brake & Brake
Fluid Warning Lights are on, the
speedometer, odometer, or tripmeter
may not work. Also, the EPS Warning
Light may illuminate and the steering
effort may increase or decrease.
In this case, have your vehicle inspect-
ed by an authorized HYUNDAI dealer.Electric Power Steering (EPS)
Warning Light
This warning light illuminates:
When the POWER button is in the ON position.
- It illuminates for approximately 3seconds and then goes off.
When there is a malfunction with the EPS.
In this case, have your vehicle
inspected by an authorized HYUNDAI
dealer.
Charging System
Warning Light
(for 12-volt battery)
This warning light illuminates:
When the 12-volt battery level is low or a failure occurs on the
charging system such as LDC.
If the warning light turns on while driving, move the vehicle to a safe
location, turn off and turn on the
vehicle again, and check if the
warning light turns off. If the warn-
ing light remains on, have the vehi-
cle inspected by an authorized
HYUNDAI dealer.
Even if the warning light turns off, have the vehicle inspected by an
authorized HYUNDAI dealer.
If you drive the vehicle while the
warning light is on, vehicle speed
may be limited and the 12-volt bat-
tery may be discharged.
❈ LDC : Low voltage DC-DC Converter.
i

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Convenient features of your vehicle
3
Press POWER button with key
This warning message is displayed if
you press the POWER button while
the warning message "Key not
detected" is displayed.
At this time, the immobilizer indicator
light blinks.
Check BRAKE SWITCH fuse
This warning message is displayed if
the brake switch fuse is disconnected.
You need to replace the fuse with a
new one before starting the vehicle.
If that is not possible, you can start the
vehicle by pressing the POWER but-
ton for 10 seconds in the ACC posi-tion.
Shift to P to start vehicle
This warning message is displayed if
you try to start the vehicle without
shifting to the P (Park) position.
Unplug vehicle to start
This message is displayed when you
start the vehicle without unplugging
the charging cable. Unplug the
charging cable, and then start the
vehicle.
Low Washer Fluid (if equipped)
This warning message is displayed
if the washer fluid level in the reser-
voir is nearly empty.
Have the washer fluid reservoir refilled.
Door / Hood / Tailgate open
This warning is displayed indicating
which door, or the hood, or the tail-gate is open.
If the door/hood/tailgate open warn-
ing message is blocked with another
warning message, an icon will
appear on the top of the LCD display.
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5-139
Driving your vehicle
5
Check battery and cables
Winter puts additional burdens on
the battery system. Visually inspect
the battery and cables as described
in chapter 7. The level of charge in
your battery can be checked by an
authorized HYUNDAI dealer or a
service station.
Use approved window washeranti-freeze in system
To keep the water in the window
washer system from freezing, add an
approved window washer anti-freeze
solution in accordance with instruc-
tions on the container. Window wash-
er anti-freeze is available from an
authorized HYUNDAI dealer and
most auto parts outlets. Do not use
coolant or other types of anti-freeze
as these may damage the paint fin-ish.
Do not let your parking brakefreeze
Under some conditions your parking
brake can 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 if the brakes are wet. If
there is a risk the parking brake may
freeze, apply it only temporarily while
you shift to P (Park) and block therear wheels so the car cannot roll.
Then release the parking brake.
Do not let ice and snow accu-
mulate underneath
Under some conditions, snow and
ice can build up under the fenders
and interfere with the steering. When
driving in severe winter conditions
where this may happen, you should
periodically check underneath the
car to be sure the movement of the
front wheels and the steering com-
ponents is not obstructed.
Don't place foreign objects ormaterials in the motor compart-
ment
Placement of foreign object or mate-
rials which prevent cooling of the
vehicle, in the motor compartment,
may cause a failure. The manufactur-
er is not responsible for the damage
caused by such placement.
To keep locks from freezing
To keep the locks from freezing,
squirt an approved de-icer fluid or
glycerine into the key opening. If a
lock is covered with ice, squirt it with
an approved de-icing fluid to remove
the ice. If the lock is frozen internally,
you may be able to thaw it out by
using a heated key. Handle the heat-
ed key with care to avoid injury.

6-23
What to do in an emergency
6
Emergency Towing
If towing is necessary, we recom-
mend you have it done by an author-
ized HYUNDAI dealer or a commer-
cial tow truck service.
If towing service is not available in an
emergency, your vehicle may be
temporarily towed using a cable or
chain secured to the emergency tow-ing hook at the front (or rear) of the
vehicle.
Use extreme caution when towing
the vehicle with a cable or chain. A
driver must be in the vehicle to steer
it and operate the brakes.
Towing in this manner may be done
only on hard-surfaced roads for a
short distance and at low speeds.
Also, the wheels, axles, power train,
steering and brakes must all be ingood condition.Always follow these emergency tow- ing precautions:
While depressing the brake pedal
shift to the N (Neutral) position and
turn the vehicle off. The POWER
button will be in the ACC position.
Release the parking brake.
Depress the brake pedal with more force than normal since you will
have reduced braking perform-
ance.
More steering effort will be required because the power steer-
ing system will be disabled.
Use a vehicle heavier than your own to tow your vehicle.
The drivers of both vehicles should communicate with each other fre-
quently.
Before emergency towing, check that the hook is not broken or dam-aged.
Fasten the towing cable or chain securely to the hook.
Do not jerk the hook. Apply steady and even force. Use a towing cable or chain less
than 5 m (16 feet) long. Attach awhite or red cloth (about 30 cm (12inch) wide) in the middle of the
cable or chain for easy visibility.
Drive carefully so the towing cable or chain remains tight during tow-ing.
Before towing, check the reduction gear for fluid leaks under your vehi-
cle. If the reduction gear is leaking,
flatbed equipment or a towing dolly
must be used.
The driver must be in the vehi-
cle for steering and braking
operations when the vehicle is
being towed. Passengers other
than the driver must not be in
the vehicle.
CAUTION
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7
Maintenance
7
Maintenance
Motor compartment .............................................7-3
Maintenance services ...........................................7-4Owner's Responsibility .....................................................7-4
Owner Maintenance Precautions..................................7-4
Owner maintenance ...............................................7-5 Owner Maintenance Schedule .......................................7-6
Scheduled maintenance services.........................7-7
Explanation of scheduled maintenance items .7-11Coolant...................................................................7-12
Brake fluid ............................................................7-13 Checking the Brake Fluid Level ...................................7-13
Washer fluid .........................................................7-14 Checking the Washer Fluid Level................................7-14
Climate control air filter .....................................7-15 Filter Inspection ...............................................................7-15
Wiper blades .........................................................7-17 Blade Inspection ..............................................................7-17
Blade Replacement .........................................................7-17
12V Battery ...........................................................7-20 For Best Battery Service .............................................7-21
Battery Recharging ........................................................7-21
Reset Features.................................................................7-22 Tires and wheels ..................................................7-23
Tire Care ............................................................................7-23
Recommended Cold Tire Inflation Pressures ...........7-24
Check Tire Inflation Pressure ......................................7-25
Tire Rotation ...................................................................7-26
Wheel Alignment and Tire Balance ............................7-27
Tire Replacement ............................................................7-27
Wheel Replacement ........................................................7-28
Tire Traction ....................................................................7-28
Tire Maintenance ............................................................7-28
Tire Sidewall Labeling ....................................................7-28
Tire Terminology and Definitions ..............................7-32
All Season Tires ...............................................................7-36
Summer Tires ...................................................................7-36
Snow Tires ........................................................................7-36
Radial-Ply Tires ...............................................................7-36
Low Aspect Ratio Tires ................................................7-37
Fuses ......................................................................7-39 Instrument Panel Fuse Replacement .......................7-40
Motor Compartment Panel Fuse Replacement ........7-41
Fuse/Relay Panel Description ......................................7-43
7

7-3
7
Maintenance
MMOOTTOO RR CC OO MM PPAA RRTTMM EENN TT
1. Coolant reservoir
2. Brake fluid reservoir
3. Fuse box
4. Battery (12 volt)
5. Coolant cap
6. Windshield washer fluid reservoir
OAEE076001N
The actual motor compartment in the vehicle may differ from the illustration.

7-6
Maintenance
Owner Maintenance Schedule
When you stop for fuel:
• Check coolant level in the coolantreservoir.
Check the windshield washer fluid level.
Check for low or under-inflated tires.
While operating your vehicle:
Check for vibrations in the steeringwheel. 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, levelroad.
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 reduction gear
occurs, check the reduction gear
fluid level.
Check the reduction gear 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 coolantreservoir.
Check the operation of all exterior lights, including the brake lights,
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.
Be careful when checking your
coolant level when the parts in
the motor compartment are hot.
This may result in coolant being
blown out of the opening and
cause serious burns and otherinjuries.
WARNING