2020 Hyundai Ioniq Hybrid brake fluid

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Your vehicle at a glance
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OAE078001
■ ■Petrol Engine (1.6 GDI)
1. Engine coolant reservoir....................7-19
2. Engine coolant cap ............................7-20
3. Inverter coolant reservoir ..................7-19
4. Brake fluid reservoir ..........................7-23
5. Air cleaner ........................................7-25
6. Engine oil dipstick..............................7-17
7. Engine oil filler cap ............................7-18
8. Windscreen washer fluid reservoir ....7-24
9. Fuse box ............................................7-47
The actual engine compartment in the vehicle may differ from the illustration.

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Your vehicle at a glance
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■ ■Petrol Engine (1.6 GDI)
1. Engine coolant reservoir....................7-19
2. Engine coolant cap ............................7-20
3. Inverter coolant reservoir ..................7-19
4. Brake fluid reservoir ..........................7-23
5. Air cleaner ........................................7-25
6. Engine oil dipstick..............................7-17
7. Engine oil filler cap ............................7-18
8. Windscreen washer fluid reservoir ....7-24
9. Fuse box ............................................7-47
The actual engine compartment in the vehicle may differ from the illustration.

3-57
Convenient features of your vehicle
3
Seat Belt Warning Light
This warning light informs the driver
that the seat belt is not fastened.
For more information, refer to
“Seat Belts” in chapter 2.
Parking Brake & Brake
Fluid Warning Light
This warning light illuminates:
Once you turn the ignition switch or
the Engine Start/Stop button to the
ON position.
- It illuminates for approximately 3
seconds
- 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 illuminates
with the parking brake released, it
the indicates the brake fluid level
in reservoir is low.

not operate.
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 engine stopped, 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. We recommend that you
have the vehicle inspected by an
authorised 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.
(red colour)

3-58
Convenient features of your vehicle
Also, the vehicle will not stop in as
short a distance with only a portion
of the brake system working.
If the brakes fail whilst you are driv-
ing, shift to a lower gear for addition-
al engine braking and stop the vehi-
cle as soon as it is safe to do so.
Regenerative Brake
Warning 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 we rec-
ommend that you have your vehicle
inspected by an authorised HYUNDAI
dealer.
The operation of the brake pedal may
be more difficult than normal and the
braking distance can increase.
Anti-lock Brake System
(ABS) Warning Light
This warning light illuminates:
Once you turn the ignition switch or
the Engine Start/Stop button to the
ON position.
- It illuminates for approximately 3
seconds 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, we recommend that
you have the vehicle inspected by
an authorised HYUNDAI dealer.
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, it
indicates that the brake fluid
level is low.
In this case, we recommend
that you have the vehicle
inspected by an authorised
HYUNDAI dealer.
WARNING

3-59
Convenient features of your vehicle
3
Electronic Brake Force
Distribution (EBD)
System Warning Light
These two warning lights illuminate
at the same time whilst driving:
When the ABS and regular brake
system may not work normally.
In this case, we recommend that
you have the vehicle inspected by
an authorised HYUNDAI dealer.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
speedometre, odometre, or tripmetre
may not work. Also, the EPS Warning
Light may illuminate and the steering
effort may increase or decrease.
In this case, we recommend you have
the vehicle inspected by an authorised
HYUNDAI dealer as soon as possible.
Electronic Parking
Brake (EPB) Warning
Light (if equipped)
This warning light illuminates:
When there is a malfunction with the
EPB.
In this case, we recommend that you
have the vehicle inspected by an
authorised HYUNDAI dealer.
Information
The Electronic Parking Brake (EPB)
Warning Light may illuminate when
the Electronic Stability control (ESC)
Indicator Light comes on to indicate
that the ESC is not working properly
(This does not indicate malfunction of
the EPB).
i
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(Continued)
In this case, avoid high speed
driving and abrupt braking.
We recommend you have the
vehicle inspected by an autho-
rised HYUNDAI dealer as soon
as possible.
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.
(Continued)
WARNING
EPB

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Convenient features of your vehicle
Key not detected
(for smart key system)
This warning message is displayed if
the smart key is not detected when you
press the Engine Start/Stop button.
Press START button again
(for smart key system)
This message is displayed if you
were unable to start the vehicle when
the Engine Start/Stop button was
pressed.
If this occurs, attempt to start the
engine by pressing the Engine
Start/Stop button again.
If the warning message appears
each time you press the Engine
Start/Stop button, we recommend
that you have your vehicle inspected
by an authorised HYUNDAI dealer.
Press START button with key
(for smart key system)
This warning message is displayed if
you press the Engine Start/Stop but-
ton whilst the warning message “Key
not detected” is displayed.
At this time, the immobiliser indicator
light blinks.
Check BRAKE SWITCH fuse
(for smart key system)
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 engine.
If that is not possible, you can start the
engine by pressing the Engine
Start/Stop button for 10 seconds in the
ACC position.
Shift to P to start vehicle
(for smart key system)
This warning message is displayed if
you try to start the engine with the
shift lever not in the P (Park) position.
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.
Low Fuel
This warning message is displayed if
the fuel tank is almost out of fuel.
When this message is displayed, the
low fuel level warning light in the
cluster will come on.
It is recommended to look for the
nearest fuelling station and refuel as
soon as possible.
Add fuel as soon as possible.
Engine has overheated
This warning message is displayed
when the engine coolant tempera-
ture is above 120°C (248°F). This
means that the engine is overheated
and may be damaged.
If your vehicle is overheated, refer
to "Overheating" in chapter 6.

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 .......................................7-9
Maintenance under severe usage conditions ..........7-13
Explanation of scheduled maintenance items .7-15
Engine oil ..............................................................7-17
Checking the engine oil level .......................................7-17
Checking the engine oil and filter ..............................7-18
Engine coolant/inverter coolantz .....................7-19
Checking the coolant level ...........................................7-19
Changing coolant.............................................................7-22
Brake fluid ............................................................7-23
Checking the brake fluid level .....................................7-23
Hybrid Starter & Generator (HSG) belt ............7-23
Checking the hybrid starter & generator (HSG)
belt ......................................................................................7-23
Washer fluid .........................................................7-24
Checking the washer fluid level ..................................7-24
Air cleaner ............................................................7-25
Parking brake .......................................................7-25
Checking the parking brake .........................................7-25
Filter replacement ...........................................................7-25
Climate control air filter .....................................7-27
Filter inspection ...............................................................7-27
Wiper blades .........................................................7-29
Blade inspection ..............................................................7-29
Blade replacement ..........................................................7-29
Battery (12 volt, plug-in hybrid vehicle) .........7-32
For best battery service................................................7-33
Battery capacity label ....................................................7-34
Battery recharging .........................................................7-34
Reset features .................................................................7-35
7

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7
Maintenance
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1. Engine coolant reservoir
2. Engine coolant cap
3. Inverter coolant reservoir
4. Brake fluid reservoir
5. Air cleaner
6. Engine oil dipstick
7. Engine oil filler cap
8. Windscreen washer fluid reservoir
9. Fuse box
OAE08001
The actual engine compartment in the vehicle may differ from the illustration. ■ ■
Hybrid vehicle