2020 Hyundai Tucson check engine light

7-8
Maintenance
At least monthly:
Check coolant level in the engine
coolant reservoir.
Check the operation of all exterior
lights, including the stoplights, turn
signals and hazard warning flash-
ers.
Check the inflation pressures of all
tyres including the spare for tyres
that are worn, show uneven wear,
or are damaged.
Check for loose wheel nuts.
At least twice a year:
(i.e., every Spring and Autumn)
Check radiator, heater and air con-
ditioning hoses for leaks or dam-
age.
Check the windscreen washer
spray and wiper operation. Clean
wiper blades with a clean cloth
dampened with washer fluid.
Check headlamp alignment.
Check muffler, exhaust pipes,
shields and clamps.
Check the seat belts for wear and
function.
At least once a year:
Clean body and door drain holes.
Lubricate door hinges and bonnet
hinges.
Lubricate door and bonnet locks
and latches.
Lubricate door rubber weather
strips.
Check the air conditioning system.
Inspect and lubricate automatic
transmission linkage and controls.
Clean the battery and terminals.
Check the brake fluid level.

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Draining water from fuel filter
The fuel filter in the diesel engine
operates the critical function of sepa-
rating water from the fuels and accu-
mulating the water in its bottom.
When enough water is accumulated
inside the fuel filter, the warning light
illuminates with the ignition switch in
the ON position.
In this case, we recommend you to
have the system checked by an
authorised HYUNDAI dealer.
Fuel filter cartridge replace-
ment
Information
When replacing the fuel filter car-
tridge, we recommend that you use
parts for replacement from an autho-
rised HYUNDAI dealer.
i
7-42
Maintenance
When the accumulated water is
not drained at a proper timing,
water may permeate in the fuel
filter, damaging the major vehi-
cle components, such as the
fuel system.
CAUTIONOTL075014

7-65
7
Maintenance
F FU
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SE
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S
A vehicle’s electrical system is pro-
tected from electrical overload dam-
age by fuses.
This vehicle has 2 (or 3) fuse panels,
one located in the driver’s side panel
bolster, the other in the engine com-
partment near the battery.
If any of your vehicle’s lights, acces-
sories, or controls do not work, check
the appropriate circuit fuse. If a fuse
has blown, the element inside the
fuse will be melted.
If the electrical system does not
work, first check the driver’s side
fuse panel. Before replacing a blown
fuse, turn the engine and all switches
OFF, and then disconnect the nega-
tive battery cable. Always replace a
blown fuse with one of the same rat-
ing.
If the replacement fuse blows, this
indicates an electrical problem. Avoid
using the system involved and imme-
diately consult an authorised
HYUNDAI dealer.Information
Four kinds of fuses are used: blade
type for lower amperage rating, car-
tridge type and Multi fuse and Battery
fuse terminal for higher amperage
ratings.
i■Blade type
Normal
■Cartridge typeBlown
Normal
Blown
■Multi fuse
NormalBlown
■Battery fuse terminal
NormalBlown
OLF074075

7-67
7
Maintenance
Inner panel fuse replacement
1. Turn the engine and all other
switches OFF.
2. Open the fuse panel cover.3. Pull the suspected fuse straight
out. Use the removal tool provided
in the engine compartment fuse
panel.
4. Check the removed fuse; replace it
if it is blown.
5. Push in a new fuse of the same
rating, and make sure it fits tightly
in the clips.
If it fits loosely, we recommend that
you consult an authorised HYUNDAI
dealer.
Information
If you do not have a spare, use a fuse
of the same rating from a circuit you
may not need for operating the vehi-
cle, such as the cigarette lighter fuse.
If the headlamps or other electrical
components do not work and the
fuses are OK, check the fuse block in
the engine compartment. If a fuse is
blown, it must be replaced with the
same rating.
i
OTLE078026
OTLE078023R

7-107
7
Maintenance
Diesel particulate filter (DPF)
(if equipped)
The Diesel Particulate Filter (DPF)
system removes the soot in the
exhaust gas. Unlike a disposable air
filter, the DPF system automatically
burns (oxidizes) and removes the
accumulated soot according to the
driving condition. In order words, the
active burning by the engine control
system and high exhaust gas tem-
perature caused by normal/high
speed diving condition burns and
removes the accumulated soot.
However, if the vehicle continues to
be driven at repeated short distance
or driven at low speed for a long time,
the accumulated soot may not be
automatically removed because of
low exhaust gas temperature. If more
than a certain amount of soot
deposited, the malfunction indicator
light( ) illuminates.
When the malfunction indicator light
illuminates, it may turn-off after driv-
ing the vehicle at more than 60km/h
(37 mph) or at more than second
gear with 1500~2500 engine rpm for
a certain time (for about 25 minutes).If the malfunction indicator light ( )
continues to blink or the warning mes-
sage “Check exhaust system” illumi-
nates in spite of the procedure, visit a
professional workshop and check the
DPF system. HUNDAI recommends to
visit an authorised HYUNDAI dealer.
If you continue to drive with the mal-
function indicator light blinking for a
long time, the DPF system can be
damaged and fuel consumption can
be worsen and the engine durability
can be worsen by oil dilution.Diesel Fuel
(if equipped with DPF)
We recommend you to use only
the regulated diesel fuels, when
your vehicle is equipped with
the DPF system.
When you use other diesel fuels,
which is high in sulfurs (above
50 ppm) or contains unspecified
additives, it may damage the
DPF system and cause the white
smoke emission.
CAUTION