2016 Hyundai Sonata Hybrid Inverter

7
Maintenance
7-19
Normal maintenance schedule (CONT.)
(Continued)
❑Replace engine coolant
(First, 120,000 miles (192,000 km) or 120 months
after every 30,000 miles (48,000 km) or 24 months)
❑ Replace inverter coolant
(First, 120,000 miles (192,000 km) or 120 months
after every 30,000 miles (48,000 km) or 24 months)
❑ Add fuel additive *
1
(120,000 miles (192,000 km) or 192 months)
127,500 miles (204,000 km) or 102 months
❑ Inspect air cleaner filter
❑ Inspect HSG belt *2
(127,500 miles (204,000 km) or 204 months)
❑ Inspect vacuum hose
❑ Air intake hose
❑ Replace engine oil and filter
(127,500 miles (204,000 km) or 204 months)
❑ Add fuel additive *
1
(127,500 miles (204,000 km) or 204 months)*1: If TOP TIER Detergent Gasoline is not available, one bottle
of additive is recommended. Additives are available from
your authorized HYUNDAI dealer along with information on
how to use them. Do not mix other additives.
*
2: Inspect HSG belt for evidence of cuts, crocks, excessive wear or oil saturation and replace if necessary. If drive belt
noise occurred, readjust drive belt tension before replace.
*
3: Fuel filter & Fuel tank air filter are considered to be mainte- nance free but periodic inspection is recommended for this
maintenance schedule depends on fuel quality. If there are
some important safety matters like fuel flow restriction,
surging, loss of power, hard starting problem etc, replace
the fuel filter immediately regardless of maintenance sched-
ule and consult an authorized HYUNDAI dealer for details.
❈ Inspect : Inspect and if necessary, adjust, correct, clean or
replace. *
1: If TOP TIER Detergent Gasoline is not available, one bottle
of additive is recommended. Additives are available from
your authorized HYUNDAI dealer along with information on
how to use them. Do not mix other additives.
*
2: Inspect HSG belt for evidence of cuts, crocks, excessive wear or oil saturation and replace if necessary. If drive belt
noise occurred, readjust drive belt tension before replace.
❈ Inspect : Inspect and if necessary, adjust, correct, clean or
replace.

7
Maintenance
7-21
Normal maintenance schedule (CONT.)
No check, No service required
❑Automatic transaxle fluid
150,000 miles (240,000 km) or 120 months
❑Inspect vacuum hose
❑ Inspect air conditioning refrigerant
❑ Inspect brake hoses and lines
❑ Inspect drive shafts and boots
❑ Inspect exhaust pipe and muffler
❑ Inspect front brake disc/pads, calipers
❑ Inspect rear brake disc/pads
❑ Inspect steering gear box, linkage & boots/lower arm ball
joint, upper arm ball joint
❑ Inspect suspension mounting bolts
❑ Inspect brake fluid
❑ Inspect fuel filter *
3
❑Inspect fuel lines, fuel hoses and connections
❑ Inspect fuel tank air filter (if equipped) *3
❑Inspect parking brake
❑ Inspect vapor hose and fuel filler cap
❑ Inspect HSG belt *
2
(150,000 miles (240,000 km) or 240 months)
❑ Air intake hose
❑ Replace climate control air filter
(for evaporator and blower unit)
❑ Replace air cleaner filter
❑ Replace engine oil and filter
(150,000 miles (240,000 km) or 240 months)
(Continued)
(Continued)
❑Replace engine coolant
(First, 120,000 miles (192,000 km) or 120 months
after every 30,000 miles (48,000 km) or 24 months)
❑ Replace inverter coolant
(First, 120,000 miles (192,000 km) or 120 months
after every 30,000 miles (48,000 km) or 24 months)
❑ Add fuel additive *
1
(150,000 miles (240,000 km) or 240 months)
*
1: If TOP TIER Detergent Gasoline is not available, one bottle of additive is recommended. Additives are available from
your authorized HYUNDAI dealer along with information on
how to use them. Do not mix other additives.
*
2: Inspect HSG belt for evidence of cuts, crocks, excessive wear or oil saturation and replace if necessary. If drive belt
noise occurred, readjust drive belt tension before replace.
*
3: Fuel filter & Fuel tank air filter are considered to be mainte- nance free but periodic inspection is recommended for this
maintenance schedule depends on fuel quality. If there are
some important safety matters like fuel flow restriction,
surging, loss of power, hard starting problem etc, replace
the fuel filter immediately regardless of maintenance sched-
ule and consult an authorized HYUNDAI dealer for details.
❈ Inspect : Inspect and if necessary, adjust, correct, clean or
replace.

7-25
7
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 transaxle fluid
Automatic transaxle fluid should not
be checked under normal usage con-
ditions. But in severe conditions, the
fluid should be changed at an author-
ized HYUNDAI dealer in accordance
to the scheduled maintenance at the
beginning of this chapter.
Automatic transaxle fluid color is
basically red.
As the vehicle is driven, the auto-
matic transaxle fluid will begin to
look darker. This is a normal con-
dition 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 transaxle mal-
function and failure. Use only
the specified automatic
transaxle fluid (refer to
“Recommended Lubricants and
Capacities” in chapter 8).
CAUTION

7-29
7
Maintenance
E
EN
N G
GI
IN
N E
E
C
C O
O O
OL
LA
A N
N T
T/
/I
IN
N V
VE
ER
R T
TE
ER
R
C
C O
O O
OL
LA
A N
N T
T
The high-pressure cooling system
has a reservoir filled with year-round
antifreeze coolant. The reservoir is
filled at the factory.
Check the antifreeze protection and
coolant level at least once a year, at
the beginning of the winter season
and before traveling to a colder cli-
mate.Checking the engine/inverter
coolant level
OLF074007N
OLFH074006
■ Radiator cap
■Inverter coolant cap
Never remove the
radiator cap and/or
inverter coolant cap
or the drain plug
while the engine and
radiator are hot. Hot coolant
and steam may blow out under
pressure, causing serious
injury.
Turn the hybrid system off and
wait until the engine cools
down. Use extreme care when
removing the radiator cap
and/or inverter coolant cap.
Wrap a thick towel around it,
and turn it counterclockwise
slowly to the first stop. Step
back while the pressure is
released from the cooling sys-
tem. When you are sure all the
pressure has been released,
press down on the cap, using a
thick towel, and continue turn-
ing counterclockwise to remove
it.
WARNING

7-30
Maintenance
Information
The engine coolant and/or inverter
coolant level is influenced by the
hybrid system temperature. Before
checking or refilling the engine
coolant and/or inverter coolant, turn
the hybrid vehicle off. The electric motor for the cooling fan
is controlled by engine coolant tem-
perature, refrigerant pressure and
vehicle speed. As the engine coolant
temperature decreases, the electric
motor will automatically shut off. This
is a normal condition. If your vehicle
is equipped with GDI, the electric
motor for the cooling fan may begin
to operate at any time and continue
to operate until you disconnect the
negative battery cable.
Engine coolant
Check the condition and connections
of all cooling system hoses and
heater hoses. Replace any swollen
or deteriorated hoses.
The coolant level should be filled
between the F and the L marks on
the side of the coolant reservoir
when the engine is cool.
If the coolant level is low, add enough
distilled (deionized) water to bring
the level to the F mark, but do not
overfill. If frequent additions are
required, See an authorized
HYUNDAI dealer for a cooling sys-
tem inspection.
i
The electric motor for
the cooling fan may
continue to operate
or start up when the
engine is not running
and can cause serious injury.
Keep hands, clothing and tools
away from the rotating fan
blades of the cooling fan.
WARNING
OLF074006N

7-31
7
Maintenance
Inverter coolant
Check the condition and connections
of all cooling system hoses and
heater hoses. Replace any swollen
or deteriorated hoses.
The coolant level should be filled
between the MAX and the MIN
marks on the side of the coolant
reservoir when the engine is cool.
If the coolant level is low, add enough
distilled (deionized) water to bring
the level to the MAX mark, but do not
overfill. If frequent additions are
required, we recommend that you
see an authorized HYUNDAI dealer
for a cooling system inspection.
Recommended coolant
When adding coolant, use onlydeionized water, distilled water or
soft water for your vehicle and
never mix hard water in the coolant
filled at the factory.
An improper coolant mixture can result in severe malfunction or
engine/ hybrid system damage.
The engine in your vehicle has alu- minum engine parts and must be
protected by an phosphate-based
ethylene glycol coolant to prevent
corrosion and freezing.
Do not use alcohol or methanol coolant or mix them with the spec-
ified coolant.
Do not use a solution that contains more than 60% antifreeze or less
than 35% antifreeze, which would
reduce the effectiveness of the
solution. For mixing percentage, refer to the
following table:
Information
If in doubt about the mix ratio, a
50% water and 50% antifreeze mix
is the easiest to mix together as it
will be the same quantity of each. It
is suitable to use for most temper-
ature ranges of -31°F and higher.
i
Ambient
Temperature Mixture Percentage
(volume)
Antifreeze Water
5°F (-15°C) 35 65
-13°F (-25°C) 40 60
-31°F (-35°C) 50 50
-49°F (-45°C) 60 40
OLFH074006

8-6
Specifications, Consumer information and Reporting safety defects
To help achieve proper engine and powertrain performance and durability, use only lubricants of the proper quality.
The correct lubricants also help promote engine efficiency that results in improved fuel economy.
R R E
EC
CO
O M
M M
ME
EN
N D
DE
ED
D
L
L U
U B
BR
RI
IC
C A
A N
N T
TS
S
A
A N
N D
D
C
C A
A P
PA
A C
CI
IT
T I
IE
E S
S
*1Refer to the recommended SAE viscosity numbers on the next page.
*2Engine oils labeled Energy Conserving Oil are now available. Along with other additional benefits, they contribute to fuel econo my by reducing
the amount of fuel necessary to overcome engine friction. Often, these improvements are difficult to measure in everyday driving, but in a year’s
time, they can offer significant cost and energy savings.
*
3If the API service SM engine oil is not available in your country, you are able to use API service SL.
LubricantVolume Classification
Engine oil *
1*2(drain and refill)
Recommends
4.33 US qt. (4.1 l)
API Service SM or above*3/ILSAC GF-4 or above
Automatic transaxle fluid
6.34 US qt. (6.0 l)MICHANG ATF SP-IV, SK ATF SP-IV NOCA ATF SP-IV,
HYUNDAI genuine ATF & SP-IV or other brands meeting the above specification approved by Hyundai Motor Co.
Engine coolant6.97~7.29 US qt.(6.6 ~ 6.9 l)Mixture of antifreeze and water
(Phosphate-based ethylene glycol coolant for aluminum radiator)
Inverter coolant
2.38 US qt. (2.26 l) Mixture of antifreeze and water
(Phosphate-based ethylene glycol coolant for aluminum radiator)
Brake fluid
0.74~0.85 US qt. (0.7~0.8 l) FMVSS116 DOT-3 or DOT-4
Fuel15.85 US gal. (60 l)Refer to “Fuel Requirements” in the Foreword chapter.

H7
Refuel to prevent Hybrid battery
damage
This warning message illuminates
when the fuel tank is nearly empty.
You should refill the fuel tank to pre-
vent hybrid battery damage.
Do not continue to run the vehicle
out of gas thinking that vehicle
can continue to operate in EV
only. it may damage the HEV
Battery.
Refill inverter coolant
This warning message illuminates
when the inverter coolant is nearly
empty.
You should refill the inverter coolant.
Stop vehicle and check brakes
This warning message illuminates
when a failure occurs in the brake
system.
In this case, park the vehicle in a safe
location and tow your vehicle to the
nearest authorized HYUNDAI dealer
and have the vehicle inspected.
NOTICE
OLFH044241L/OLFH044242L
■Type A ■Type B
OLFH044243L/OLFH044244L
■Type A ■Type B
OLFH044233L/OLFH044234L
■Type A ■Type B