2023 HYUNDAI SANTA FE HYBRID engine overheat

Emergency Situations8-8
WARNING
Never remove the engine
coolant 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 engine coolant
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 system. When
you are sure all the pressure has been
released, press down on the cap, using
a thick towel, and continue turning
counterclockwise to remove it.
7. If you cannot find the cause of the overheating, wait until the engine
temperature 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.
8. Proceed with caution, keeping alert for further signs of overheating.
If overheating happens again,
we recommend that you call an
authorized HYUNDAI dealer for
assistance.
CAUTION

[Serious loss of coolant indicates a
leak in the cooling system and we
recommend the system be checked
by an authorized HYUNDAI dealer.

[ When the engine overheats from
low engine coolant, suddenly adding
engine coolant may cause cracks
in the engine. To prevent damage,
add engine coolant slowly in small
quantities.

[ When adding the inverter coolant,
we recommend that the vehicle
should only be serviced by trained
and certified technicians.
WARNING
Do not use water or methanol
coolant or mix them with the
specified coolant.
An incorrect coolant
mixture can result in severe
malfunction or engine/hybrid
system damage.

Emergency Situations8-10
Tire Pressure Monitoring System
WARNING
Over-inflation or under-inflation can
reduce tire life, adversely affect vehicle
handling, and lead to sudden tire failure
that may cause loss of vehicle control
resulting in an accident.
Each tire, including the spare (if
provided), should be checked monthly
when cold and inflated to the inflation
pressure recommended by the vehicle
manufacturer on the vehicle placard
or tire inflation pressure label. (If your
vehicle has tires of a different size than
the size indicated on the vehicle placard
or tire inflation pressure label, you should
determine the proper tire inflation
pressure for those tires.)
As an added safety feature, your
vehicle has been equipped with a tire
pressure monitoring system (TPMS)
that illuminates a low tire pressure
telltale when one or more of your tires is
significantly under-inflated. Accordingly,
when the low tire pressure telltale
illuminates, you should stop and check
your tires as soon as possible, and inflate
them to the proper pressure. Driving on
a significantly under-inflated tire causes
the tire to overheat and can lead to tire
failure.
Under-inflation also reduces fuel
efficiency and tire tread life, and may
affect the vehicle’s handling and
stopping ability.
Please note that the TPMS is not a
substitute for proper tire maintenance,
and it is the driver’s responsibility to
maintain correct tire pressure, even if
under-inflation has not reached the level
to trigger illumination of the TPMS low
tire pressure telltale.
Your vehicle has also been equipped with
a TPMS malfunction indicator to indicate
when the system is not operating
properly. The TPMS malfunction
indicator is combined with the low
tire pressure telltale. When the system
detects a malfunction, the telltale will
flash for approximately one minute and
then remain continuously illuminated.
This sequence will continue upon
subsequent vehicle start-ups as long as
the malfunction exists.
When the malfunction indicator is
illuminated, the system may not be able
to detect or signal low tire pressure as
intended. TPMS malfunctions may occur
for a variety of reasons, including the
installation of replacement or alternate
tires or wheels on the vehicle that
prevent the TPMS from functioning
properly.
Always check the TPMS malfunction
telltale after replacing one or more tires
or wheels on your vehicle to ensure that
the replacement or alternate tires and
wheels allow the TPMS to continue to
function properly.
NOTICE
If any of the below happens, we
recommend that you have the system
checked by an authorized HYUNDAI
dealer.
1. The Low Tire Pressure Telltale/TPMS Malfunction Indicator does not
illuminate for 3 seconds when the
Engine Start/Stop button is pressed
to the ON position or when the
engine is running.
2. The TPMS Malfunction Indicator remains illuminated after blinking for
approximately 1 minute.
3. The Low Tire Pressure Position Telltale remains illuminated.

Maintenance9-20
WARNING
Make sure the coolant cap is properly
closed after refilling coolant. Otherwise
the engine could be overheated while
driving.
„Engine compartment front view
OTMH090008
1. Check if the coolant cap label is straight In front.
„Engine compartment rear view
OTMH092009L
2. Make sure that the tiny protrusions inside the coolant cap are securely
interlocked.
Recommended coolant

[When adding coolant, use only
deionized water, distilled water or soft
water for your vehicle and never mix
hard water in the coolant filled at the
factory.

[ An incorrect coolant mixture can
result in severe malfunction or
engine/hybrid system damage.

[ The engine in your vehicle has
aluminum 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 specified
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:
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
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 temperature ranges of -31°F
(-35°C) and higher.

09
9-21
Changing Coolant
We recommend that coolant be changed
by an authorized HYUNDAI dealer
according to the Maintenance Schedule
at the beginning of this chapter.
WARNING
Do 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.
NOTICE
To prevent damage to engine parts, put
a thick towel around the engine coolant
cap and/or inverter coolant cap before
refilling the coolant to prevent the
coolant from overflowing into engine
parts, such as the alternator.
Checking the Hybrid Starter &
Generator (HSG) Belt
We recommend that you have the
Hybrid Starter & Generator (HSG) belt
inspected or replaced according to the
Maintenance Schedule in this chapter by
an authorized HYUNDAI dealer.
CAUTION
When the HSG belt is worn out or
damaged, replace the belt.
Otherwise, it may cause engine
overheating or battery discharge.
WARNING

[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.
HYBRID STARTER &
*(1(5$725

I
I-7
Highway Driving Assist (HDA) ........................................................................\
.. 7-94
Highway Driving Assist Malfunction and Limitations .................................... 7-98
Highway Driving Assist Operation .................................................................. 7-96
Highway Driving Assist Settings ..................................................................... 7-95
How to use this Manual ........................................................................\
................. 1-4
Hybrid Starter & Generator (HSG) Belt .............................................................. 9-21
Checking the Hybrid Starter & Generator (Hsg) Belt ...................................... 9-21
Hyundai Motor America ........................................................................\
................ 1-2
I
If the Engine Overheats ........................................................................\
................. 8-7
If the Engine will not Start........................................................................\
............. 8-3
If You Have a Flat Tire (with spare tire) .............................................................. 8-14
Changing Tires ........................................................................\
......................... 8-15
Jack and Tools ........................................................................\
.......................... 8-14
Jack Label ........................................................................\
................................. 8-20
Removing and Storing the Spare Tire .............................................................. 8-14
Ignition Switch ........................................................................\
.............................. 6-5
Engine Start/Stop Button ........................................................................\
............ 6-5
Remote Start ........................................................................\
............................... 6-9
Important Safety Precautions ........................................................................\
......... 3-2
Air Bag Hazards ........................................................................\
......................... 3-2
Always Wear Your Seat Belt ........................................................................\
...... 3-2
Control Your Speed ........................................................................\
.................... 3-2
Driver Distraction ........................................................................\
....................... 3-2
Keep Your Vehicle in Safe Condition ................................................................. 3-2
Restrain All Children ........................................................................\
.................. 3-2
In Case of an Emergency while Driving ................................................................ 8-2
If the Engine Stalls at a Crossroad or Crossing .................................................. 8-2
If the Engine Stalls while Driving ...................................................................... 8-2
If You Have a Flat Tire While Driving ............................................................... 8-3
Infotainment System ........................................................................\
.................. 5-129
Antenna ........................................................................\
.................................. 5-129
Bluetooth
® Wireless Technology .................................................................... 5-131
Infotainment System ........................................................................\
.............. 5-130
Steering Wheel Remote Controls ................................................................... 5-129
USB Port ........................................................................\
................................ 5-129
Voice Recognition ........................................................................\
.................. 5-130