2018 Hyundai Sonata Plug-in Hybrid heating

6-7
What to do in an emergency
6
If your engine coolant temperature
gauge indicates overheating, you
experience a loss of power, or hear
loud pinging or knocking, the engine
may be overheating. If this happens,
you should:
1. Turn ON the hazard warning flash-er, pull off the road and stop as
soon as it is safe to do so.
2. Place the shift lever in P (Park) and set the parking brake.
3. Make sure that there is no hotsteam gushing out of the engine
compartment. When it is safe to
do so, open the engine compart-
ment, and check the water-pump
connector. When the water-pump
connector is disconnected, stop
the engine, re-connect the water-
pump connector, and then re-start
the engine.
4. Set the temperature and the air flow to the maximum, and turn ON
the air conditioner. 5. When the Service warning light
( ) illuminates on the instru-
ment cluster, immediately stop the
engine, and contact an authorized
HYUNDAI dealer. When the
engine warning light ( ) illumi-
nates, or when the coolant or hot
steams gush out of the engine
compartment, leave the engine
compartment opened, while run-
ning the engine. This is to ventilate
the engine compartment and to
cool down the engine.
6. Check the coolant temperature gauge on the instrument cluster to
make sure the coolant temperature
is sufficiently cooled down. Check
the coolant level. When it is insuffi-
cient, check its connection with the
radiator, the heater hose, and the
water pump for any leakage. When
there is no leakage, add the
coolant. However, if the problems
persists, such as the illumination of
the warning lights, leakages, or the
cooling-fan malfunction, which may
overheat the engine, immediately
stop the engine, and have your
vehicle checked by an authorized
HYUNDAI dealer.
I
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OLFH067029L

6-8
What to do in an emergency7. If you cannot find the cause of theoverheating, wait until the engine
temperature has returned to nor-
mal. 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.
8. Proceed with caution, keeping alert for further signs of overheat-
ing. If overheating happens again,
call an authorized HYUNDAI deal-
er for assistance.
Serious loss of coolant indi-
cates a leak in the cooling sys-
tem and should be checked as
soon as possible by an author-
ized HYUNDAI dealer.
CAUTION
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
Your vehicle is
equipped with a pres-
surized coolant
reserve tank. NEVER
remove the coolant
reserve tank cap or the radiator
drain plug while the engine and
radiator are HOT. Hot coolant
and steam may blow out under
pressure, causing serious
injury.
Turn the engine off and wait
until the engine cools down.
Use extreme care when remov-
ing the coolant reserve tank
cap. Wrap a towel or thick rag
around it, and turn it counter-
clockwise slowly to release
some of the pressure from the
system. Step back while the
pressure is released.
When you are sure all the pres-
sure has been released, contin-
ue turning the cap counter-
clockwise to remove it.
WARNING

7-22
Maintenance
Changing engine coolant
Have coolant changed by an author-
ized HYUNDAI dealer according to
the Maintenance Schedule at the
beginning of this chapter.
To prevent damage to engine
parts, put a thick towel around the
radiator cap before refilling the
coolant to prevent the coolant
from overflowing into engine
parts, such as the generator.
Checking the hybrid starter &
generator (HSG) belt
Have the hybrid starter & generator
(HSG) belt inspected or replaced
according to the Maintenance
Schedule in this chapter by an
authorized HYUNDAI dealer.
NOTICE
H HY
Y B
BR
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(
( H
H S
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B
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LT
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Turn the vehicle off while you
inspect the engine or hybrid
starter & generator(HSG) belt.
Otherwise it may result in
serious injury.
Keep hands, clothing etc.
away from the hybrid starter &
generator (HSG) belt.
WARNING
When the HSG belt is worn out
or damaged, replace the belt.
Otherwise, it may cause engine
overheating or battery dis-
charge.
CAUTIONDo not use engine coolant or
antifreeze in the washer fluid
reservoir.
Engine coolant can severely
obscure visibility when sprayed
on the windshield and may
cause loss of vehicle control
resulting in an accident.
Engine coolant may also cause
damage to paint and body trim.
WARNING

I-2
Accessing your vehicle .....................................................3-3Immobilizer System .....................................................3-8
Smart Key.....................................................................3-3\
Air Bag - Advanced Supplemental Restraint System.....2-47 Additional Safety Precautions ....................................2-69
Air Bag Warning Labels.............................................2-70
How Does the Air Bag System Operate? ...................2-53
Occupant Classification System (OCS) .....................2-58
SRS Care ....................................................................2-68\
What to Expect After an Air Bag Inflates ..................2-57
Where Are the Air Bags? ...........................................2-49
Why Didn't My Air Bag Go Off in a Collision?........2-63
Air cleaner.......................................................................7\
-25 Filter replacement .......................................................7-25
Air conditioning system....................................................8-5
Appearance care..............................................................7-76 Exterior care ...............................................................7-76
Interior care ................................................................7-81
Automatic climate control system ................................3-125 Automatic heating and air conditioning ...................3-126
Manual heating and air conditioning .......................3-127
System maintenance .................................................3-136
System operation ......................................................3-134 Automatic Emergency Braking (AEB)...........................5-68
AEB front radar sensor ..............................................5-73
AEB warning message and system control................5-70
Limitations of the system ...........................................5-76
System malfunction ....................................................5-74
System setting and activation .....................................5-68
Automatic transmission ..................................................5-12 Automatic transmission operation..............................5-12
Good driving practices ...............................................5-17
Parking........................................................................\
5-17
Battery ........................................................................\
.....7-31 Battery recharging ......................................................7-32
For best battery service ..............................................7-32
Reset features .............................................................7-33
Before driving ...................................................................5-4 Before entering the vehicle ..........................................5-4
Before starting ..............................................................5-4
Blind Spot Detection system (BSD) ...............................5-45 BSD (Blind Spot Detection) / LCA (Lane Change Assist) .....................................5-46
Limitations of the system ...........................................5-52
RCTA (Rear Cross Traffic Alert) ...............................5-49
Brake fluid ......................................................................7-\
23 Checking the brake fluid level ...................................7-23
Index
A
B

H38
Maintaining Hybrid mode to pro-tect engine (Plug-in hybrid)
The hybrid system will automatically
stop after sufficient heating. (If the
hybrid system is turned OFF without
sufficient heating, the hybrid system
maintenance mode will be operated
once more.
Energy flow
The hybrid system informs the driv-
ers its energy flow in various operat-
ing modes. While driving, the current
energy flow is specified in 11 modes.
Vehicle Stop
The vehicle is stopped.
(No energy flow)
EV Propulsion
Only the motor power is used to drive
the vehicle.
(Battery ➞Wheel)
■ Type A■ Type B
OLFH047778L/OLFH047214L
■ Type A■ Type B
OLFH047768L/OLFH047216L
OLFP047769N
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