2020 Hyundai Tucson check engine light

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Convenient features of your vehicle
Check DAW (Driver Attention
Warning) system (if equipped)
This warning message is displayed if
there is a problem with the Driver
Attention Warning (DAW) system. We
recommend that you have the vehicle
inspected by an authorised HYUNDAI
dealer.
For more details, refer to "Driver
Attention Warning (DAW) system"
in chapter 5.
Check FCW (Forward Collision
Warning) system (if equipped)
This warning message is displayed if
there is a problem with the Forward
Collision Warning (FCW) system. We
recommend that you have the vehicle
inspected by an authorised HYUNDAI
dealer.
For more details, refer to "Forward
Collision-Avoidance Assist (FCA)
system" in chapter 5.
Check LKA (Lane Keep Assist)
system (if equipped)
This warning message is displayed if
there is a problem with the Lane
Keeping Assist (LKA) system. We
recommend that you have the vehicle
inspected by an authorised HYUNDAI
dealer.
For more details, refer to "Lane
Keeping Assist (LKA) system" in
chapter 5.
Check BCW (Blind-Spot
Collision Warning) system
(if equipped)
This warning message is displayed if
there is a problem with the Blind-
Spot Collision Warning system. We
recommend that you have the vehi-
cle inspected by an authorised
HYUNDAI Dealer.
For more details, refer to "Blind-
Spot Collision Warning" in chapter
5.
Check exhaust system
(Diesel Particulate Filter (DPF)
warning for diesel engine)
This warning message illuminates if
the DPF system has a malfunction.
at this time, DPF warning light also
blinks.
In this case, we recommend that you
have the DPF system checked by an
authorised HYUNDAI dealer.
For more details, refer to "Warning
lights" in this chapter.

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Convenient features of your vehicle
Parking Brake & Brake
Fluid Warning Light
This warning light illuminates:
Once you set 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
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 engine stopped, check
the brake fluid level immediately
and add fluid as required (For
more details, refer to “Brake
Fluid” in chapter 7). Then check
all brake components for fluid
leaks. If any leak in the brake sys-
tem is still found, the warning light
remains on, or the brakes do not
operate properly, do not drive the
vehicle.
In this case, we recommend that
you have the vehicle towed to an
authorised HYUNDAI dealer and
inspected.
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 are
required to stop the 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.

3-96
Convenient features of your vehicle
Charging System
Warning Light
This warning light illuminates:
Once you set the ignition switch or
the Engine Start/Stop button to the
ON position.
- It remains on until the engine is
started.
When there is a malfunction with
either the alternator or electrical
charging system.
If there is a malfunction with either
the alternator or electrical charging
system:
1. Drive carefully to the nearest safe
location and stop your vehicle.
2. Turn the engine off and check the
alternator drive belt for looseness
or breakage.
If the belt is adjusted properly,
there may be a problem in the
electrical charging system.
In this case, we recommend that
you have the vehicle inspected by
an authorised HYUNDAI dealer as
soon as possible.
Engine Oil Pressure
Warning Light
This warning light illuminates:
Once you set the ignition switch or
the Engine Start/Stop button to the
ON position.
- It remains on until the engine is
started.
When the engine oil pressure is
low.
If the engine oil pressure is low:
1. Drive carefully to the nearest safe
location and stop your vehicle.
2. Turn the engine off and check the
engine oil level (For more details,
refer to “Engine Oil” in chapter
7). If the level is low, add oil as
required.
If the warning light remains on
after adding oil or if oil is not avail-
able, we recommend that you
have the vehicle inspected by an
authorised HYUNDAI dealer as
soon as possible.

3-97
Convenient features of your vehicle
3
- Engine Oil Pressure
Warning Light
If the engine does not stop
immediately after the Engine Oil
Pressure Warning Light is illumi-
nated, severe damage could
result.
If the warning light stays on
whilst the engine is running, it
indicates that there may be seri-
ous engine damage or malfunc-
tion. In this case,
1. Stop the vehicle as soon as it
is safe to do so.
2. Turn off the engine and check
the oil level. If the oil level is
low, fill the engine oil to the
proper level.
3. Start the engine again. If the
warning light stays on after
the engine is started, turn the
engine off immediately. In this
case, we recommend that you
have the vehicle inspected by
an authorised HYUNDAI deal-
er.Low Fuel Level
Warning Light
This warning light illuminates:
When the fuel tank is nearly empty.
If the fuel tank is nearly empty:
Add fuel as soon as possible.
- Low Fuel Level
Driving with the Low Fuel Level
warning light on or with the fuel
level below “0 or E” can cause the
engine to misfire and damage the
catalytic converter (if equipped).
Overspeed Warning
Light (if equipped)
This warning light blinks:
When you drive the vehicle over
120 km/h.
- This is to prevent you from driving
your vehicle with overspeed.
- The overspeed warning chime
also sounds for approximately 5
seconds.
NOTICE
NOTICE120km/h

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Convenient features of your vehicle
3
Exhaust System (DPF)
Warning Light
(Diesel Engine,
if equipped)
This warning light illuminates:
When there is a malfunction with
Diesel Particulate Filter (DPF) sys-
tem.
When this warning light illumi-
nates, it may turn off after driving
the vehicle:
- at more than 60km/h, or
- at more than 2nd gear with 1500
~ 2000 engine rpm for a certain
time (for about 25 minutes).
If the this warning light blinks in spite
of the procedure (at this time LCD
warning message will be displayed),
we recommend that you have the
DPF system checked by an autho-
rised HYUNDAI dealer.If you continue to drive with the
DPF warning light blinking for a
long time, the DPF system can be
damaged and fuel consumption
can worsen.
Indicator lights
Electronic Stability
Control (ESC) Indicator
Light (if equipped)
This indicator light illuminates:
Once you set 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 ESC system.
In this case, we recommend that
you have the vehicle inspected by
an authorised HYUNDAI dealer.
This indicator light blinks:
Whilst the ESC is operating.
For more details, refer to
“Electronic Stability Control
(ESC)” in chapter 5.
NOTICE

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To charge a mobile phone
The wireless mobile phone charging
system charges only the Qi-enabled
mobile phones ( ). Read the label
on the mobile phone accessory
cover or visit your mobile phone
manufacturer’s website to check
whether your mobile phone supports
the Qi technology.
The wireless charging process starts
when you put a Qi-enabled mobile
phone on the wireless charging unit.
1. Remove other items, including the
smart key, from the wireless
charging unit. If not, the wireless
charging process may be inter-
rupted. Place the mobile phone
on the centre of charging pad.
2. The indicator light is orange when
the mobile phone is charging. The
indicator light turns green when
phone charging is complete.
3. You can turn ON or OFF the wire-
less charging function in the User
Settings Mode on the instrument
cluster. For further information,
refer to the “LCD Display Modes”
in this chapter.If your mobile phone is not charging:
- Slightly change the position of the
mobile phone on the charging pad.
- Make sure the indicator light is
orange.
The indicator light will blink orange
for 10 seconds if there is a malfunc-
tion in the wireless charging system.
In this case, temporarily stop the
charging process, and re-attempt to
wirelessly charge your mobile phone
again.
The system warns you with a mes-
sage on the LCD display if the mobile
phone is still on the wireless charg-
ing unit after the engine is turned
OFF and the front door is opened.
For certain mobile phones, the mes-
sage may not be displayed.
(This is due to the characteristic of
the certain mobile phone and the
wireless mobile phone charging sys-
tem is normal.)Information
For some manufacturers' mobile
phones, the system may not warn you
even though the mobile phone is left
on the wireless charging unit. This is
due to the particular characteristic of
the mobile phone and not a malfunc-
tion of the wireless charging.
i
Convenient features of your vehicle

5-7
Driving your vehicle
5
Key ignition switch positions
Switch
PositionActionNotes
LOCK
To turn the ignition switch to the LOCK position, push the key in
slightly at the ACC position and turn the key towards the LOCK
position.
The ignition key can be removed in the LOCK position.
The steering wheel locks to protect the vehicle from theft
(if equipped).
ACC
Electrical accessories are usable.
The steering wheel unlocks.If difficulty is experienced turning the ignition
switch to the ACC position, turn the key
whilst turning the steering wheel right and
left to release.
ON
This is the normal key position when the engine has started.
All features and accessories are usable.
The warning lights can be checked when you turn the ignition
switch from ACC to ON.Do not leave the ignition switch in the ON
position when the engine is not running to
prevent the battery from discharging.
STARTTo start the engine, turn the ignition switch to the START position.
The switch returns to the ON position when you let go of the key.The engine will crank until you release the
key.

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Driving your vehicle
5
- Vehicle with manual transmission
Button Position Action Notes
ON
Press the Engine Start/Stop button whilst it
is in the ACC position without depressing
the clutch pedal.
The warning lights can be checked before
the engine is started.Do not leave the Engine Start/Stop button in
the ON position when the engine is not run-
ning to prevent the battery from discharging.
START
To start the engine, depress the clutch and
brake pedals and press the Engine Start/
Stop button with the shift lever in neutral.If you press the Engine Start/Stop button
without depressing the clutch pedal, the
engine does not start and the Engine
Start/Stop button changes as follows:
OFF → →
ACC → →
ON → →
OFF or ACC