check engine HYUNDAI SONATA HYBRID 2019 Workshop Manual

6-26
4. Unscrew the valve cap from the
valve of the defective wheel and
screw the filling hose (3) of the
sealant bottle onto the valve. 5. Plug the compressor power cord
(3) into the vehicle power outlet.
Only use the front passenger side
power outlet when connecting the
power cord.
6. With the Engine Start/Stop button in the ON position, switch on the
compressor and let it run for
approximately 5~7 minutes to fill
the sealant up to proper pressure.
(refer to the Tire and Wheels, chap-
ter 8). The inflation pressure of the
tire after filling is unimportant and
will be checked/corrected later.
Be careful not to overinflate the
tire and stay away from the tirewhen filling it.
NOTICE
What to do in an emergency
OLFH067037 Securely install the sealant fill-
ing hose to the valve. If not,
sealant may flow backward,
possibly clogging the filling
hose.
CAUTION
OLFH067033
Tire pressure
Do not attempt to drive your
vehicle if the tire pressure is
below 200 kPa (29 psi). Thiscould result in an accident due
to sudden tire failure.
CAUTION

6-32
What to do in an emergency
Emergency Towing (if equipped)
If towing is necessary, we recom-
mend you to have it done by an
authorized HYUNDAI dealer or a
commercial 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 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 should be done only on a
solid ground for a short distance and
at a low speed.
Also, the wheels, axles, power train,
steering and brakes must all be ingood condition.
Always follow these emergency tow-ing precautions:
Place the Engine Start/Stop button
in the ACC position so the steering
wheel is not locked.
Place the shift lever in N (Neutral).
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.
OLF067026
OLF067027
■Front
■Rear

6-36
What to do in an emergency
Starter won't function
Engine turns over but
will not start Engine misfires
Engine overheats Engine stops while
driving Fuel consumption is
excessive
Brake pedal is spongy
Braking power is insufficient
Steering wheel is heavy
Steering wheel shakesSteering wheel pulls to
one side while drivingVehicle pulls to one side
while braking
Tire wear is abnormalCharge warning light\
comes on while drivingWipers, horn or lights
won't funciton
Battery discharge is
excessive
Ignition circuit faulty
Ignition coil or condensor faulty
Distributor faulty
Alternator belt loose
Check fuses, bulbs or wiring
Brake dragging
Shift lever not positioned in "P" or "N" range
Frequent driving in lower gear
Air intrusion into brake lines
Brake fluid insufficient
Brake disc and pads wet
Brake pad wearWheel alignment incorrectWheel balance incorrect
Tire pressure incorrect (too low or high)
Tire size incorrectO
O OO
O
OOOO O OO O O O O O
OOOO
OOO O
O O O
OO O O O O
O
SYMPTOM
PROBABLE CAUSE

7
Maintenance
7
Maintenance
Engine 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.........................7-8 Normal maintenance schedule .......................................7-9
Maintenance under severe usage conditions ..........7-13
Explanation of scheduled maintenance items .. 7-15
Engine oil ..............................................................7-18 Checking the engine oil level .......................................7-18
Checking the engine oil and filter ..............................7-19
Engine coolant/Inverter coolant .......................7-20 Checking the engine/inverter coolant level .............7-20
Changing engine coolant...............................................7-23
Hybrid starter & generator (HSG) belt.............7-23 Checking the hybrid starter &
generator (HSG) belt ......................................................7-23
Brake fluid ............................................................7-24 Checking the brake fluid level .....................................7-24
Washer fluid .........................................................7-25 Checking the washer fluid level ..................................7-25 Parking brake .......................................................7-25
Checking the parking brake .........................................7-25
Air cleaner ............................................................7-26 Filter replacement ...........................................................7-26
Climate control air filter .....................................7-28 Filter inspection ...............................................................7-28
Wiper blades .........................................................7-30 Blade inspection ..............................................................7-30
Blade replacement ..........................................................7-30
Battery...................................................................7-32 For best battery service................................................7-33
Battery recharging .........................................................7-33
Reset features .................................................................7-34
Tires and wheels ..................................................7-35 Tire care ............................................................................7-35
Recommended cold tire inflation pressures.............7-36
Check tire inflation pressure........................................7-37
Tire rotation .....................................................................7-38
Wheel alignment and tire balance ..............................7-39
Tire replacement .............................................................7-39
Wheel replacement .........................................................7-40
Tire traction ......................................................................7-40
7

7-5
7
Maintenance
OOWW NNEERR MM AAIINN TTEENN AANN CCEE
The following lists are vehicle checks and inspections that should be per-
formed by the owner or an authorized
HYUNDAI dealer at the frequencies
indicated to help ensure safe,
dependable operation of your vehicle.
Any adverse conditions should be
brought to the attention of your deal-
er as soon as possible.
These Owner Maintenance vehicle
checks are generally not covered by
warranties and you may be charged
for labor, parts and lubricants used.
Performing maintenance work
on a vehicle can be dangerous.
If you lack sufficient knowledge
and experience or the propertools and equipment to do the
work, have it done by an author-
ized HYUNDAI dealer. ALWAYS
follow these precautions for
performing maintenance work:
Park your vehicle on level
ground, move the shift lever
into the P (Park, for automatic
transmission vehicle) posi-
tion, apply the parking brake,
place the Engine Start/Stop
button in the OFF position.
Block the tires (front and back)
to prevent the vehicle from
moving.
Remove loose clothing or jew-
elry that can become entan-
gled in moving parts.
(Continued)
WARNING (Continued)
If you must run the engine
during maintenance, do so
out doors or in an area withplenty of ventilation.
Keep flames, sparks, or smok-
ing materials away from the
battery and fuel-related parts.
When you open the engine
hood, turn the hybrid system
off. If not, It may result in
death or serious injury
because of the high voltage
flow.

7-6
Maintenance
Owner maintenance schedule
When you stop for fuel:
Check the engine oil level.
Check coolant level in the enginecoolant reservoir.
Check the windshield washer fluid level.
Check for low or under-inflated tires.
While operating your vehicle:
Note any changes in the sound ofthe 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 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 transmission
occurs, check the transmission
fluid level.
Check the automatic 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).
At least monthly:
Check coolant level in the enginecoolant reservoir.
Check the operation of all exterior lights, including the stoplights, 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
engine coolant level when the
engine is hot. This may result in
coolant being blown out of theopening and cause serious
burns and other injuries.
WARNING

7-11
7
Maintenance
Normal maintenance schedule (CONT.)
R : Replace I : Inspect and, after Inspection, clean, adjust, repair or replace if necessary.
No.DESCRIPTIONKILOMETERS X 10001224364860728496108120132144156168180192204216228240
MONTHS6121824303642485460667278849096102108114120
GENERAL ITEMS
1ENGINE COOLANTAt first, replace the coolant at 192,000 km or 120 months;after that, replace it every 48,000 km or 24 months
2INVERTER COOLANTAt first, replace the coolant at 192,000 km or 120 months;
after that, replace it every 48,000 km or 24 months
3AUTOMATIC TRANSMISSION FLUIDNo check, No service required
4BRAKE FLUIDIIIII
5BRAKE HOSE/LINES & CONNECTIONS (including booster)IIIIIIIIII
6FRONT DISC BRAKE/PADS, CALIPERSIIIIIIIIII
7REAR BRAKE DISC/PADSIIIIIIIIII
8PARKING BRAKEIIIII

7-15
7
Maintenance
EEXX PPLLAA NN AATTIIOO NN OO FF SS CC HH EEDD UU LLEE DD MM AAIINN TTEENN AANN CCEE IITT EEMM SS
Engine oil and filter
The engine oil and filter should be
changed at the intervals specified in
the maintenance schedule. If the car
is being driven in severe conditions,more frequent oil and filter changesare required.
HSG (Hybrid starter & genera- tor) belt
The HSG belt should be changed at
the intervals specified in the mainte-
nance schedule.
Fuel filter
A clogged filter can limit the speed at
which the vehicle may be driven,damage the emission system and
cause multiple issues such as hard
starting. If an excessive amount of
foreign matter accumulates in the
fuel tank, the filter may require
replacement more frequently. After
installing a new filter, run the engine
for several minutes, and check for
leaks at the connections. Fuel filters
should be installed by an authorized
HYUNDAI dealer.
Fuel lines, fuel hoses and con- nections
Check the fuel lines, fuel hoses and
connections for leakage and dam-
age. Have an authorized HYUNDAI
dealer replace any damaged or leak-
ing parts immediately.
Vapor hose and fuel filler cap
The vapor hose and fuel filler cap should be inspected at those inter-
vals specified in the maintenance
schedule. Make sure a new vaporhose or fuel filler cap is correctlyreplaced.
Air cleaner filter
A genuine HYUNDAI air cleaner filter is recommended when the filter isreplaced.
Spark plugs
Make sure to install new spark plugs
of the correct heat range.

7-16
Maintenance
Cooling system
Check cooling system components,
such as radiator, coolant reservoir,
hoses and connections for leakage
and damage. Replace any damaged
parts.
Engine coolant/Inverter coolant
The coolant should be changed at
the intervals specified in the mainte-
nance schedule.
Automatic transmission fluid
Automatic transmission fluid should
not be checked under normal usage
conditions. But in severe conditions,the fluid should be changed at an
authorized HYUNDAI dealer inaccordance to the scheduled mainte-nance at the beginning of this chap-
ter.
Automatic transmission fluid
color is basically red.
As the vehicle is driven, the auto- matic transmission fluid will begin
to look darker. This is a normal
condition and you should not
judge the need to replace the fluid
based upon the changed color.
Brake hoses and lines
Visually check for proper installation,
chafing, cracks, deterioration and
any leakage. Replace any deteriorat-
ed or damaged parts immediately.
Brake fluid
Check brake fluid level in the brake
fluid reservoir. The level should be
between the MIN and the MAX
marks on the side of the reservoir.
Use only hydraulic brake fluid con-
forming to DOT 3 or DOT 4 specifi-cation.
Parking brake
Inspect the parking brake system
including the parking brake pedal
and cables.
NOTICE
The use of a non-specified fluid could result in transmission
malfunction and failure. Use
only the specified automatic
transmission fluid (refer to"Recommended Lubricants and
Capacities" in chapter 8).
CAUTION

7-17
7
Maintenance
Brake discs, pads, calipers
and rotors
Check the pads for excessive wear,
discs for run out and wear, and
calipers for fluid leakage.
For more information on checking
the pads or lining wear limit, refer to
the HYUNDAI web site. (http://ser
vice.hyundai-motor.com)
Exhaust pipe and muffler
Visually inspect the exhaust pipes,
muffler and hangers for cracks, dete-
rioration, or damage. Start the
engine and listen carefully for any
exhaust gas leakage. Tighten con-
nections or replace parts as neces-
sary.
Suspension mounting bolts
Check the suspension connections
for looseness or damage. Retighten
to the specified torque.
Steering gear box, linkage &
boots/lower arm ball joint
With the vehicle stopped and the
hybrid system off, check for exces-
sive free-play in the steering wheel.
Check the linkage for bends or dam-
age. Check the dust boots and ball
joints for deterioration, cracks, or
damage.
Replace any damaged parts.
Drive shafts and boots
Check the drive shafts, boots and
clamps for cracks, deterioration, or
damage. Replace any damaged
parts and, if necessary, repack the
grease.
Air conditioning refrigerant
Check the air conditioning lines and
connections for leakage and damage.