2013 Hyundai Sonata Hybrid air conditioning

4103
Features of your vehicle
Climate control air filter
The climate control air filter installed
behind the glove box filters the dust or
other pollutants that come into the vehi-
cle from the outside through the heating
and air conditioning system. If dust or
other pollutants accumulate in the filter
over a period of time, the air flow from the
air vents may decrease, resulting in
moisture accumulation on the inside of
the windshield even when the outside
(fresh) air position is selected. If this hap-
pens, have the climate control air filter
replaced by an authorized HYUNDAI
dealer.
✽ ✽
NOTICE
• Replace the filter according to the
Maintenance Schedule.
If the vehicle is being driven in severe
conditions such as dusty, rough roads,
more frequent climate control air fil-
ter inspections and changes are
required.
• When the air flow rate suddenly
decreases, the system should be
checked at an authorized HYUNDAI
dealer.
Checking the amount of air con-
ditioner refrigerant and compres-
sor lubricant
When the amount of refrigerant is low,
the performance of the air conditioning is
reduced. Overfilling also has a negative
influence on the air conditioning system.
Therefore, if abnormal operation is
found, have the system inspected by an
authorized HYUNDAI dealer.
✽ ✽
NOTICE
It is important that the correct type and
amount of oil and refrigerant is used.
Otherwise, damage to the compressor and
abnormal system operation may occur. OMG075033
Outside air
Recirculated
air
Climate control
air filterBlower
Evaporator
coreHeater core
WARNING
The air conditioning system for the
Hybrid vehicle should be serviced
by an authorized HYUNDAI dealer.
The Hybrid air conditioning system
is connected to the high voltage
system and requires special fluids,
tools and service procedures.
Improperly servicing the Hybrid air
conditioning system could result in
electrical shock, serious injury, or
even death.

Features of your vehicle
106 4
Defogging logic
To reduce the probability of fogging up
the inside of the windshield, the air intake
is controlled automatically according to
certain conditions such as or
position. To cancel or return the defog-
ging logic, perform the following steps.
Automatic climate control system
1. Press the engine start/stop button to
the ON position.
2. Select the defrost position pressing
defrost button ( ).
3. While holding the air conditioning but-
ton (A/C) pressed, press the air intake
control button at least 5 times within 3
seconds.
The indicator on the air intake control
button blinks 3 times with 0.5 second of
interval. It indicates that the defogging
logic is canceled or returned to the pro-
grammed status.If the battery has been discharged or dis-
connected, the system resets to the pro-
grammed defogging logic.
OYFH041220N-1

529
Driving your vehicle
Use your air conditioning sparingly.
The air conditioning system is operat-
ed by engine power so your fuel econ-
omy is reduced when you use it.
Open windows at high speeds can
reduce fuel economy.
Fuel economy is less in crosswinds
and headwinds. To help offset some of
this loss, slow down when driving in
these conditions.
Keeping a vehicle in good operating con-
dition is important both for economy and
safety. Therefore, have an authorized
HYUNDAI dealer perform scheduled
inspections and maintenance.
WARNING - HEV system
off during motion
Never turn the HEV system off to
coast down hills or anytime the
vehicle is in motion. The power
steering and power brakes will not
function properly without the HEV
system running. Instead, keep the
HEV system on and downshift to an
appropriate gear for engine braking
effect. In addition, turning off the
ignition while driving could engage
the steering wheel lock resulting in
loss of vehicle steering which
could cause serious injury or
death.

What to do in an emergency
8 6
IF THE ENGINE OVERHEATS
If your temperature gauge indicates over-
heating, you experience a loss of power,
or hear loud pinging or knocking, the
engine is probably too hot. If this hap-
pens, you should:
1. Pull off the road and stop as soon as it
is safe to do so.
2. Place the shift lever in P (automatic
transaxle) and set the parking brake. If
the air conditioning is on, turn it off.
3. If engine coolant is running out under
the car or steam is coming out from
the hood, stop the engine. Do not open
the hood until the coolant has stopped
running or the steaming has stopped.
If there is no visible loss of engine
coolant and no steam, leave the
engine running and check to be sure
the engine cooling fan is operating. If
the fan is not running, turn the engine
off.4. Check to see if the water pump drive
belt is missing. If it is not missing,
check to see that it is tight. If the drive
belt seems to be satisfactory, check for
coolant leaking from the radiator,
hoses or under the car. (If the air con-
ditioning had been in use, it is normal
for cold water to be draining from it
when you stop.)
5. If the water pump drive belt is broken
or engine coolant is leaking out, stop
the engine immediately and call the
nearest authorized HYUNDAI dealer
for assistance.6. If you cannot find the cause of the
overheating, wait until the engine tem-
perature has returned to normal. Then,
if coolant has been lost, carefully add
coolant to the reservoir to bring the
fluid level in the reservoir up to the
halfway mark.
7. Proceed with caution, keeping alert for
further signs of overheating. If over-
heating happens again, call an author-
ized HYUNDAI dealer for assistance.
WARNING
While the engine is running, keep
hair, hands and clothing away from
moving parts such as the fan and
drive belts to prevent injury.
CAUTION
Serious loss of coolant indicates
there is a leak in the cooling system
and this should be checked as soon
as possible by an authorized
HYUNDAI dealer.
WARNING
Do not remove the radiator cap
when the engine is hot. This may
result in coolant being blown out of
the opening and cause serious
burns.

Maintenance
6 7
At least monthly:
Check coolant level in the engine
coolant reservoir and inverter coolant
reservoir.
Check the operation of all exterior
lights, including the stoplights, turn sig-
nals and hazard warning flashers.
Check the inflation pressures of all
tires including the spare.
At least twice a year
(i.e., every Spring and Fall):
Check radiator, heater, inverter coolant
hose and air conditioning hoses for
leaks or damage.
Check windshield washer spray and
wiper operation. Clean wiper blades
with clean cloth dampened with wash-
er fluid.
Check headlight alignment.
Check muffler, exhaust pipes, shields
and clamps.
Check the lap/shoulder belts for wear
and function.
Check for worn tires and loose wheel
lug nuts.
At least once a year:
Clean body and door drain holes.
Lubricate door hinges and checks, and
hood hinges.
Lubricate door and hood locks and
latches.
Lubricate door rubber weatherstrips.
Check the air conditioning system.
Inspect and lubricate automatic
transaxle linkage and controls.
Clean battery and terminals.
Check the brake fluid level.
Check the drive belt.

Maintenance
8 7
NORMAL MAINTENANCE SCHEDULE
The following maintenance services must be performed to ensure good emission control and performance. Keep receipts for all
vehicle emission services to protect your warranty. Where both mileage and time are shown, the frequency of service is deter-
mined by whichever occurs first.
15,000 miles (24,000 km) or 12 months
❑Inspect air cleaner filter
❑Inspect HSG belt
(15,000 miles (24,000 km) or 24 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
(Continued)
(Continued)
❑Inspect steering gear box, linkage & boots/lower arm ball joint,
upper arm ball joint
❑Inspect suspension mounting bolts
❑Replace climate control air filter (for evaporator and blower unit)
❑Replace engine oil and filter
(15,000 miles (24,000 km) or 24 months)
❑Add fuel additive *3
(15,000 miles (24,000 km) or 24 months)
❑Rotate tires
22,500 miles (36,000 km) or 18 months
❑Inspect air cleaner filter
❑Inspect HSG belt
(22,500 miles (36,000 km) or 36 months)
❑Inspect vacuum hose
❑Replace engine oil and filter
(22,500 miles (36,000 km) or 36 months)
❑Add fuel additive *3
(22,500 miles (36,000 km) or 36 months)
❑Rotate tires
7,500 miles (12,000 km) or 6 months
❑Inspect air cleaner filter
❑Inspect HSG belt
(7,500 miles (12,000 km) or 12 months)
❑Inspect vacuum hose
❑Replace engine oil and filter
(7,500 miles (12,000 km) or 12 months)
❑Add fuel additive *3
(7,500 miles (12,000 km) or 12 months)
❑Rotate tires
❈Inspect : Inspect and if necessary, adjust, correct, clean or replace.
*3: If TOP TIER Detergent Gasoline is not available, one bottle of additive is rec-
ommended. Additives are available from your authorized HYUNDAI dealer
along with information on how to use them. Do not mix other additives.

79
Maintenance
NORMAL MAINTENANCE SCHEDULE (CONT.)
37,500 miles (60,000 km) or 30 months
❑Inspect air cleaner filter
❑Inspect HSG belt
(37,500 miles (60,000 km) or 60 months)
❑Inspect vacuum hose
❑Replace engine oil and filter
(37,500 miles (60,000 km) or 60 months)
❑Add fuel additive *3
(37,500 miles (60,000 km) or 60 months)
❑Rotate tires
❈Inspect : Inspect and if necessary, adjust, correct, clean or replace.
*1: Fuel filter & Fuel tank air filter are considered to be maintenance free but peri-
odic inspection is recommended for this maintenance schedule depends on
fuel quality. If there are some important safety matters like fuel flow restric-
tion, surging, loss of power, hard starting problem etc, replace the fuel filter
immediately regardless of maintenance schedule and consult an authorized
HYUNDAI dealer for details.
*
3: If TOP TIER Detergent Gasoline is not available, one bottle of additive is rec-
ommended. Additives are available from your authorized HYUNDAI dealer
along with information on how to use them. Do not mix other additives.
30,000 miles (48,000 km) or 24 months
❑Inspect air conditioning refrigerant
❑Inspect brake fluid
❑Inspect brake hoses and lines
❑Inspect drive shafts and boots
❑Inspect exhaust pipe and muffler
❑Inspect front brake disc/pads, calipers
❑Inspect fuel filter *1
❑Inspect fuel lines, fuel hoses and connections
❑Inspect fuel tank air filter (if equipped) *1
❑Inspect HSG belt
(30,000 miles (48,000 km) or 48 months)
❑Inspect rear brake disc/pads
❑Inspect parking brake
❑Inspect steering gear box, linkage & boots/lower arm ball joint,
upper arm ball joint
❑Inspect suspension mounting bolts
❑Inspect vacuum hose
❑Inspect vapor hose and fuel filler cap
❑Replace air cleaner filter
❑Replace climate control air filter (for evaporator and blower unit)
❑Replace engine oil and filter
(30,000 miles (48,000 km) or 48 months)
❑Add fuel additive *3
(30,000 miles (48,000 km) or 48 months)
❑Rotate tires

Maintenance
10 7
45,000 miles (72,000 km) or 36 months
❑Inspect air cleaner filter
❑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 HSG belt
(45,000 miles (72,000 km) or 72 months)
❑Inspect rear brake disc/pads
❑Inspect steering gear box, linkage & boots/lower arm ball joint,
upper arm ball joint
❑Inspect suspension mounting bolts
❑Inspect vacuum hose
❑Replace climate control air filter (for evaporator and blower unit)
❑Replace engine oil and filter
(45,000 miles (72,000 km) or 72 months)
❑Add fuel additive *3
(45,000 miles (72,000 km) or 72 months)
❑Rotate tires
NORMAL MAINTENANCE SCHEDULE (CONT.)
52,500 miles (84,000 km) or 42 months
❑Inspect air cleaner filter
❑Inspect HSG belt
(52,500 miles (84,000 km) or 84 months)
❑Inspect vacuum hose
❑Replace engine oil and filter
(52,500 miles (84,000 km) or 84 months)
❑Add fuel additive *3
(52,500 miles (84,000 km) or 84 months)
❑Rotate tires
❈Inspect : Inspect and if necessary, adjust, correct, clean or replace.
*3: If TOP TIER Detergent Gasoline is not available, one bottle of additive is rec-
ommended. Additives are available from your authorized HYUNDAI dealer
along with information on how to use them. Do not mix other additives.