2020 Hyundai Tucson fuel pump

F10
Introduction
Biodiesel
Commercially supplied Diesel blends
of no more than 7% biodiesel, com-
monly known as "B7 Diesel" may be
used in your vehicle if Biodiesel
meets EN 14214 or equivalent spec-
ifications (EN stands for "European
Norm"). The use of biofuels exceed-
ing 7% made from rapeseed methyl
ester (RME), fatty acid methyl ester
(FAME), vegetable oil methyl ester
(VME) etc. or mixing diesel exceed-
ing 7% with biodiesel will cause
increased wear or damage to the
engine and fuel system. Repair or
replacement of worn or damaged
components due to the use of non
approved fuels will not be covered by
the manufacturer’s warranty. Do not let any petrol or water
enter the tank. This would make
it necessary to drain it out and
to bleed the lines to avoid jam-
ming the injection pump and
damaging the engine.CAUTION
Diesel Fuel
It is recommended to use the
regulated automotive diesel
fuel for diesel vehicles
equipped with the DPF system.
If you use diesel fuel including
high sulphur (more than 50 ppm
sulphur) and unspecified addi-
tives, it can cause the DPF sys-
tem to be damaged and white
smoke can be emitted.
CAUTION
Never use any fuel, whether
diesel, B7 biodiesel or other-
wise, that fails to meet the lat-
est petroleum industry speci-
fication.
Never use any fuel additives
or treatments that are not rec-
ommended or approved by
the vehicle manufacturer.
CAUTION

3-100
Convenient features of your vehicle
4 Wheel Drive (4WD)
Warning Light
(if equipped)
This warning light illuminates:
Once you set the ignition switch or
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 4WD system.
In this case, we recommend that
you have the vehicle inspected by
an authorised HYUNDAI dealer.
Headlight Warning
Light (if equipped)
This warning light illuminates:
If there is a malfunction (burned-
out bulb except LED light or circuit
malfunction) with the exterior lights
(headlight, brake light, fog light,
etc.). In this case, we recommend
that you have your vehicle inspect-
ed by an authorised HYUNDAI
dealer.
Information
Make sure to replace the burned out
bulb with a new one of the same
wattage rating.
If not, this warning message will not
be displayed.
i
Fuel Filter Warning Light
When the Fuel Filter Warning
Light illuminates, engine
power (vehicle speed & idle
speed) may decrease.
If you keep driving with the
warning light on, engine parts
(injector, common rail, high
pressure fuel pump) may be
damaged. If this occurs, we
recommend that you have the
vehicle inspected by an
authorised HYUNDAI dealer
as soon as possible.
CAUTION

7-7
7
Maintenance
Owner maintenance schedule
When you stop for fuel:
Check the engine oil level.
Check coolant level in the engine
coolant reservoir.
Check the windscreen washer fluid
level.
Check for low or under-inflated
tyres.
Whilst operating your vehicle:
Note any changes in the sound of
the exhaust or any smell of
exhaust fumes in the vehicle.
Check for vibrations in the steering
wheel. 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 travelling on a smooth, level
road.
When stopping, listen and check
for unusual sounds, pulling to one
side, increased brake pedal travel
or a “hard-to-push” brake pedal.
If any slipping or changes in the
operation of your transmission
occurs, check the transmission
fluid level.
Check the automatic transmis-
sion/dual clutch transmission
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). Be careful when checking your
engine coolant level when the
engine is hot. This may result in
coolant being blown out of the
opening and cause serious
burns and other injuries.
WARNING
Diesel Engine
Never manipulate or modify the
injection system whilst running
the diesel engine or within 30
seconds after turning OFF the
diesel engine. The high-pres-
sure pump, high-pressure
pipes, rail, and injectors are still
subject to the high pressure
right after stopping the diesel
engine. When the fuel leakage
vents out, it may cause serious
body injury. Any people, who
are implemented with the artifi-
cial cardiac pacemaker, should
remain away from the ECU or
the wiring harness by at least 30
cm, whilst running the diesel
engine. The high currents of the
electric engine control system
produce a considerable amount
of magnetic fields.
WARNING

7-27
7
Maintenance
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Engine oil and filter
The engine oil and filter should be
changed at the intervals specified in
the maintenance schedule. If the
vehicle is being driven in severe con-
ditions, more frequent oil and filter
changes are required.
Drive belts
Inspect all drive belts for evidence of
cuts, cracks, excessive wear or oil
saturation and replace if necessary.
Drive belts should be checked peri-
odically for proper tension and
adjusted as necessary.
Fuel filter (cartridge)
A clogged-up fuel filter may limit the
vehicle driving speed, damage the
emission system, and cause hard
starting. When a considerable
amount of foreign substances are
accumulate in the fuel tank, the fuel
filter should be replaced.
Upon installing a new fuel filter, oper-
ate the diesel engine for several min-
utes, and check the connections for
any leakages. We recommend that
you have the fuel filter replaced by an
authorised HYUNDAI dealer.
Fuel lines, fuel hoses and con-
nections
Check the fuel lines, fuel hoses and
connections for leakage and dam-
age. We recommend that the fuel
lines, fuel hoses and connections be
replaced by an authorised HYUNDAI
dealer. When you are inspecting the
drive belt, place the ignition
switch to the LOCK/OFF or ACC
position.
CAUTION
Diesel Only
Never manipulate or modify the
injection system whilst running
the diesel engine or within 30
seconds after turning the diesel
engine OFF. The high-pressure
pump, high-pressure pipes, rail,
and injectors are still subject to
the high pressure right after
stopping the diesel engine.
When the fuel leakage vents
out, it may cause serious body
injury. Any people, who are
implemented with the artificial
cardiac pacemaker, should
remain away from the ECU or
the wiring harness by at least 30
cm whilst running the diesel
engine. The high currents of the
common rail system produce a
considerable amount of mag-
netic fields.
WARNING

7-77
7
Maintenance
Engine compartment main fuse panel
Relay NameSymbolType
R LY. 1Cooling Fan High RelayMINI
R LY. 2Rear Defogger RelayMICRO
R LY. 3A/C RelayMICRO
R LY. 4PTC Heater Relay #3MICRO
R LY. 5PTC Heater Relay #2MICRO
R LY. 6PTC Heater Relay #1MICRO
R LY. 7B/A Horn RelayMICRO
R LY. 8Front Deicer RelayMICRO
R LY. 9Cooling Fan Low RelayMICRO
R LY. 1 0Fuel Filter Heater RelayMICRO
R LY. 1 1Start RelayMICRO
R LY. 1 3Blower RelayMICRO
R LY. 1 4Fuel Pump RelayMICRO

7-81
7
Maintenance
Fuse Name SymbolFuse ratingCircuit Protected
FUSE
ECU 220A [G4NA] Ignition Coil #1/#2/#3/#4, Condenser
[G4FJ] Ignition Coil #1/#2/#3/#4
[D4HA] ECM
ECU 515A [G4FJ] ECM
[D4HA] TCM
ECU 415A [G4FJ] PCM/ECM
[G4NA/D4HA] ECM
SENSOR 310A [G4NA] Injector #1/#2/#3/#4
[G4FJ] ECM
[D4HA] Mass Air Flow Sensor, Oil Pump Solenoid Valve
DEICER15A E/R Junction Block (RLY. 8 - Front Deicer Relay)
FUEL PUMP 120A E/R Junction Block (RLY. 14)
MODULE 17.5A [D4HA] Glow Relay Unit, Fuel Filter Warning Sensor
B/A HORN10A E/R Junction Block (RLY. 7 - B/A Horn Relay)
ABS 310A ESC Control Module