ignition HYUNDAI SONATA HYBRID 2019 Owner's Guide

6-35
What to do in an emergency
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6
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
Engine overheating
Low fuel levelFuel lines clogged
Fuel pump defective
Strainer cloggedRich mixture
Water intrusion into fuelCoolant leakageHigh idle speed
Engine oil insufficient or defective
Battery fluid shortage
Battery discharged
Battery terminal poor contact
Starter or ignition switch malfunctionIgnition timing incorrect
Spark plugs deteriorated
Spark plugs defective OOOOOOOOOO O O
O O O O
O OO OOOO O O
OO O O
O
OOO
SYMPTOM
PROBABLE CAUSE

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

7-32
MaintenanceB
B AA TTTT EERR YY
When you do not use the vehicle
for a long time in a low tempera-
ture area, disconnect the battery
and keep it indoors.
Always charge the battery fully to prevent battery case damage
in low temperature areas.
NOTICE
To prevent SERIOUS INJURY or
DEATH to you or bystanders,
always follow these precautions
when working near or handling
the battery:
Always read and follow
instructions carefully
when handling a battery.Wear eye protection
designed to protect the
eyes from acid splashes.
Keep all flames, sparks, or smoking materials
away from the battery.
Hydrogen is always pres- ent in battery cells, is
highly combustible, and
may explode if ignited.
Keep batteries out of
reach of children.
(Continued)
WARNING (Continued)Batteries contain sulfu-
ric acid which is highly
corrosive. Do not allow
acid to contact your
eyes, skin or clothing.
If acid gets into your eyes, flush
your eyes with clean water for at
least 15 minutes and get imme-
diate medical attention. If acid
gets on your skin, thoroughly
wash the area. If you feel pain or
a burning sensation, get med-
ical attention immediately.
When lifting a plastic-cased
battery, excessive pressure
on the case may cause battery
acid to leak. Lift with a battery
carrier or with your hands on
opposite corners.
Do not attempt to jump start
your vehicle if your battery is
frozen.
(Continued)
(Continued)
NEVER attempt to recharge
the battery when the vehicle’s
battery cables are connected
to the battery.
The electrical ignition system
works with high voltage.
NEVER touch these compo-nents with the engine running
or when the Engine Start/Stop
button is in the ON position.

7-67
7
Maintenance
Engine compartment main fuse panel - PCB Block
Fuse NameFuse ratingCircuit Protected
IGN COIL20AIgnition Coil #1/#2/#3/#4
ECU 210APCM
TCU 110APCM
OPCU 210AElectric Oil Pump Unit (Control)
EWP10AElectric Water Pump (HEV)
ECU 120APCM
SENSOR 210A
Mass Air Flow Sensor, Oil Control Valve #1 (Intake), Oil Control Valve #2 (Exhaust),
Purge Control Solenoid Valve, Camshaft Position Sensor #1 (Intake),
Camshaft Position Sensor #2 (Exhaust),
E/R Junction Block (Cooling Fan Relay, Fuel Pump Relay)
AMS10ABattery Sensor