2018 Hyundai Sonata heavy traffic

3-106
Convenient features of your vehicleThe system may not operate nor-
mally in the below conditions.
When the light from the on-
coming or front vehicle is not
detected because of lamp dam-
age, hidden from sight, etc.
When the lamp of the on-com-
ing or front vehicle is covered
with dust, snow or water.
When the light from the on-
coming or front vehicle is not
detected because of exhaust
fume, smoke, fog, snow, etc.
When the front window is cov-
ered with foreign matters such
as ice, dust, fog, or is damaged. (Continued)
CAUTION(Continued)
When there is a similar shape
lamp with the front vehicle’s
lamps.
When it is hard to see because
of fog, heavy rain or snow.
When the headlamp is not
repaired or replaced at an
authorized dealer.
When headlamp aiming is not
properly adjusted.
When driving on a narrow
curved road or rough road.
When driving downhill or uphill.
When only part of the vehicle
in front is visible on a cross-
road or curved road.
When there is a traffic light,
reflecting sign, flashing sign
or mirror.(Continued)
(Continued)
When the road conditions are
bad such as being wet or cov-
ered with snow.
When the front vehicle's head-
lamps are off but the fog lamps
on.
When a vehicle suddenly
appears from a curve.
When the vehicle is tilted from
a flat tire or being towed.
When the LKAS (Lane
Keeping Assist System) warn-
ing light illuminates. (if
equipped)

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Convenient features of your vehicle
3
When using the air conditioning
system, monitor the engine tem-
perature gauge closely while driv-
ing up hills or in heavy traffic
when outside temperatures are
high. Air conditioning system
operation can cause engine over-
heating. Continue to use the blow-
er fan, but turn the air condition-
ing system off if the engine tem-
perature gauge indicates engine
overheating.
Air conditioning system operation
tips
If the vehicle has been parked indirect sunlight during hot weather,
open the windows for a short time
to let the hot air inside the vehicle
escape.
After sufficient cooling has been achieved, switch back from the
recirculated air to the fresh outside
air position.
To help reduce moisture inside of the windows on rainy or humid
days, decrease the humidity inside
the vehicle by operating the air
conditioning system with the win-
dows and sunroof closed.
Use the air conditioning system every month only for a few minutes
to ensure maximum system per-
formance. If you operate air conditioner
excessively, the difference between
the temperature of the outside air
and that of the windshield could
cause the outer surface of the
windshield to fog up, causing loss
of visibility. In this case, set the
mode selection knob or button to
the position and fan speed
control to the lower speed.
NOTICE

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Convenient features of your vehicle
3
Air conditioning
All HYUNDAI Air Conditioning
Systems are filled with environmen-
tally friendly R-1234yf refrigerant.
1. Start the engine.
2. Push the air conditioning button.
3. Set the mode to the Face Levelmode.
4. Set the air intake control to the recirculated air position. However,
prolonged operation of the recircu-
lated air position will excessively
dry the air. In this case, change the
air position.
5. Adjust the fan speed control and temperature control to maintain
maximum comfort.
When maximum cooling is desired,
set the temperature control to the
extreme left position then set the fan
speed control to the highest speed. When using the air conditioning
system, monitor the engine tem-
perature gauge closely while driv-
ing up hills or in heavy traffic
when outside temperatures are
high. Air conditioning system
operation can cause engine over-
heating. Continue to use the blow-
er fan, but turn the air condition-
ing system off if the engine tem-
perature gauge indicates engine
overheating.
Air conditioning system operation
tips
If the vehicle has been parked in
direct sunlight during hot weather,
open the windows for a short time
to let the hot air inside the vehicle
escape.
After sufficient cooling has been achieved, switch back from the
recirculated air to the fresh outside
air position.
To help reduce moisture inside of the windows on rainy or humid
days, decrease the humidity inside
the vehicle by operating the air
conditioning system with the win-
dows and sunroof closed.
Use the air conditioning system every month only for a few minutes
to ensure maximum system per-
formance.
NOTICE

5-54
Driving your vehicle
Cruise Control Operation
1. CRUISE indicator
2. SET indicator
The Cruise Control system allows
you to drive at speeds above 20 mph
(30 km/h) without depressing the
accelerator pedal.
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OLF057040
Take the following precautions:
If the Cruise Control is left on,
(CRUISE indicator light in the
instrument cluster illuminat-
ed) the Cruise Control can be
activated unintentionally.
Keep the Cruise Control sys-
tem off (CRUISE indicator
light OFF) when the Cruise
Control is not in use, to avoid
inadvertently setting a speed.
Use the Cruise Control system
only when traveling on open
highways in good weather.
Do not use the Cruise Control
when it may not be safe to
keep the vehicle at a constant
speed:
(Continued)
(Continued)- Driving in heavy or varyingspeed traffic.
- On slippery (rainy, icy or snow covered) roads.
- Hilly or winding roads.
- Very windy areas.
- When driving with limited view (possibly due to bad
weather, such as fog, snow,
rain or sandstorm).WARNING

5-59
Driving your vehicle
5
To Adjust the Sensitivity of
Smart Cruise Control
The sensitivity of vehicle speed
when following the front vehicle to
maintain the set distance can be
adjusted. Go to the User Settings
Mode (Driving Assist) and select
SCC (Smart Cruise Control). You
may select one of the three stages
you prefer.
Slow:Vehicle speed following the front
vehicle to maintain the set distance
is slower than normal speed. Normal:
Vehicle speed following the front
vehicle to maintain the set distance
is normal
Fast: Vehicle speed following the front
vehicle to maintain the set distance
is faster than normal speed.
OLF057441N
(Continued)
Do not use the Smart Cruise
Control when it may not be
safe to keep the vehicle at a
constant speed:
- Driving in heavy or varying speed traffic.
- On slippery (rainy, icy or snow covered) roads.
- Construction areas
- Parking areas
- Hilly or winding roads.
- Very windy areas.
- When driving with limited view (possibly due to bad
weather, such as fog, snow,
rain or sandstorm)
Do not use smart cruise con-
trol when towing a trailer.

7-9
7
Maintenance
At least twice a year:(i.e., every Spring and Fall)
Check radiator, heater and air condi-
tioning hoses for leaks or damage.
Check windshield washer spray and wiper operation. Clean wiper
blades with clean cloth dampened
with washer fluid.
Check headlamp alignment.
Check muffler, exhaust pipes, shields and clamps.
Check the seat belts for wear and function.
At least once a year:
Clean body and door drain holes.
Lubricate door hinges and hoodhinges.
Lubricate door and hood locks and latches.
Lubricate door rubber weather strips.
Check the air conditioning system.
Inspect and lubricate automatic transmission linkage and controls.
Clean the battery and terminals.
Check the brake fluid level. Follow Normal Maintenance Schedule
if the vehicle is usually operated where
none of the following conditions apply.
If any of the following conditions apply,
you must follow the Maintenance
Under Severe Usage Conditions.
Repeated short distance driving.
Driving in dusty conditions or
sandy areas.
Extensive use of brakes.
Driving in areas where salt or other corrosive materials are used.
Driving on rough or muddy roads.
Driving in mountainous areas.
Extended periods of idling or low speed operation.
Driving for a prolonged period in cold temperatures and/or extreme-
ly humid climates.
More than 50% driving in heavy city traffic during hot weather
above 90°F (32°C).
For additional information or assis-
tance see your authorized HYUNDAI
dealer.
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Maintenance
7-14
Severe Driving Conditions
A - Repeatedly driving short distances of less than 5 miles (8 km) in normal temperature or less than 10 miles (16 km)
in freezing temperature
B - Extensive engine idling or low speed driving for long dis- tances
C - Driving on rough, dusty, muddy, unpaved, graveled or salt- spread roads
D - Driving in areas using salt or other corrosive materials or in very cold weather E - Driving in sandy areas
F - Driving in heavy traffic area over 90°F (32°C)
G- Driving on uphill, downhill, or mountain road
H - Towing a Trailer, or using a camper, or roof rack
I - Driving as a patrol car, taxi, other commercial use or vehicle
towing
J - Driving over 106 mph (170 km/h)
K - Frequently driving in stop-and-go conditions
MAINTENANCE ITEMMAINTENANCE OPERATIONMAINTENANCE INTERVALSDRIVING
CONDITION
Parking brakeIMore frequentlyC, D, G, H
Steering gear box, linkage & boots/
lower arm ball joint, upper arm ball
joint
IMore frequentlyC, D, E, F, G, H, I
Suspension mounting boltsIMore frequentlyC, D, E, F, G, H, I
Drive shafts and bootsIEvery 3,000 miles or 6 monthsC, D, E, F, G, H, I
Climate control air filter
(for evaporator and blower unit)RMore frequentlyC, E

7
Maintenance
7-19
Severe Driving Conditions
A - Repeatedly driving short distances of less than 5 miles (8 km) in normal temperature or less than 10 miles (16 km)
in freezing temperature
B - Extensive engine idling or low speed driving for long dis- tances
C - Driving on rough, dusty, muddy, unpaved, graveled or salt- spread roads
D - Driving in areas using salt or other corrosive materials or in very cold weather E - Driving in sandy areas
F - Driving in heavy traffic area over 90°F (32°C)
G- Driving on uphill, downhill, or mountain road
H - Towing a Trailer, or using a camper, or roof rack
I - Driving as a patrol car, taxi, other commercial use or vehicle
towing
J - Driving over 106 mph (170 km/h)
K - Frequently driving in stop-and-go conditions
MAINTENANCE ITEMMAINTENANCE OPERATIONMAINTENANCE INTERVALSDRIVING
CONDITION
Parking brakeIMore frequentlyC, D, G, H
Steering gear box, linkage & boots/
lower arm ball joint, upper arm ball
joint
IMore frequentlyC, D, E, F, G, H, I
Suspension mounting boltsIMore frequentlyC, D, E, F, G, H, I
Drive shafts and bootsIEvery 3,750 miles or 6 monthsC, D, E, F, G, H, I
Climate control air filter
(for evaporator and blower unit)RMore frequentlyC, E