2023 HYUNDAI NEXO radiator

1-6
Your vehicle at a glanceF
F UU EELL CC EE LLLL PP OO WW EERR MM OODDUU LLEE CC OO MM PPAA RRTTMM EENN TT
1. Brake fluid reservoir ..........................7-19
2. Air cleaner.........................................7-20
3. Fuse box ...........................................7-53
4. Windshield washer fluid reservoir .....7-20
5. Device cooling coolant reservoir .......7-13
6. Device cooling radiator cap ..............7-14
7. Stack cooling coolant reservoir.........7-16
8. Stack cooling radiator cap ................7-17
OFE078001
The actual Fuel cell power module compartment in the vehicle may differ from the illustration.

3-31
Convenient features of your vehicle
3
Use the inside rear view mirror or
look back directly to determine the
actual distance of other vehicles
prior to changing lanes.
Do not scrape ice off the mirrorface; this may damage the sur- face of the glass.
If the mirror is jammed with ice, do not adjust the mirror by
force. Use an approved spray
de-icer (not radiator antifreeze)
spray, or a sponge or soft cloth
with very warm water, or move
the vehicle to a warm place and
allow the ice to melt.
Do not clean the mirror with harsh
abrasives, fuel or other petroleum
based cleaning products.Side view mirror adjustment
Adjusting the side view mirrors:
1. Press either the L (driver's side) or R (passenger's side) button (1) to
select the side view mirror you
would like to adjust.
2. Use the mirror adjustment control switch (2) to position the selected
mirror up, down, left or right. The mirrors stop moving when
they reach the maximum adjust-
ing angles, but the motor contin-
ues to operate while the switch
is pressed. Do not press the
switch longer than necessary,
because this can damage the
motor.
Do not attempt to adjust the side view mirrors by hand, because
this can damage the motor.
NOTICE
NOTICE
NOTICE
Do not adjust or fold the side
view mirrors while driving. This
may cause loss of vehicle con-
trol resulting in an accident.
WARNING
OFE048430L

3-55
Convenient features of your vehicle
3
Fuel Filler Door
Opening the fuel filler door
1. Turn the vehicle off.
2. Push the fuel filler door openerbutton.
The fuel filler door does not open if the vehicle is not off.
The fuel filler door may open after several seconds from turning off
the vehicle. However, in cold
weather, the fuel door may not
open for about 45 seconds until
the cluster message "Powering
down..." disappears. This is for
protecting the fuel cell system. 3. Pull the fuel filler door (1) outward
to access the fuel filler cap.
4. Pull the fuel filler cap (2).
Information
If the fuel filler door does not open
because ice has formed around it, tap
lightly or push on the door to break
the ice and release the door. Do not
pry on the door. If necessary, spray
around the door with an approved de-
icer fluid (do not use radiator anti-
freeze) or move the vehicle to a warm
place and allow the ice to melt.
Closing the fuel filler door
1. Cover the fuel filler with the cap.
2. Close the fuel filler door until it is latched securely.
i
NOTICE
OFEQ018014L
OFEQ018015N
If the fuel filler cap requires
replacement, you should use
parts for replacement from an
authorized Hyundai dealer. Anincorrect fuel filler cap canresult in a serious malfunc-tion of the fuel system or
emission control system. you
should contact your HYUNDAI
dealer for replacement.
If the fuel filler door is not
completely closed, the vehicle
is not turned on. Close thefuel filler door and turn on the
vehicle.
WARNING

3-61
Convenient features of your vehicle
3
- Fuel Cell StackOverheats
If the gauge pointer moves
beyond the normal range area
toward the "H" position, it indi-
cates overheating that may dam-
age the fuel cell stack.Hydrogen fuel gauge
This gauge indicates the approxi-mate amount of fuel remaining in thefuel tank (The fuel tank capacity is
given in chapter 8). The fuel gauge is
supplemented by a low fuel warninglight which will illuminate when the
fuel tank is nearly empty. Information -
HydrogenFueling Station
According to the hydrogen fueling sta-
tion condition, the hydrogen fuel may
not filled fully.i
NOTICE
Running Out of Fuel
Running out of fuel can expose
vehicle occupants to danger.
You must stop and obtain addi-
tional fuel as soon as possibleafter the warning light comes
on or when the gauge indicator
comes close to the ''E'' (Empty)
level.
WARNING
Radiator Cap
Never remove the radiator cap
when the fuel cell power mod-
ule is hot. Otherwise the fuel
cell stack coolant may be under
pressure and cause severe
burns. Wait until the fuel cell
power module is cool before
adding coolant to the reservoir.
WARNING
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5-115
Driving your vehicle
Information
The Smart Cruise Control system
may not operate temporarily due to:
 Electrical interference
 Modifying the suspension
 Differences of tire abrasion or tire pressure
 Installing different type of tires
Information
This device complies with Industry
Canada RSS-210 standard.
Operation is subject to the following
three conditions:
1. This device may not cause harmful interference, and
2. This device must accept any interfer- ence received, including interference
that may cause undesired operation.
3. Changes or modifications not expressly approved by the party
responsible for compliance could
void the user 's authority to operate
the device. Information
Radio frequency radiation exposure
information:
This equipment complies with RSS
radiation exposure limits set forth for
an uncontrolled environment.
This equipment should be installed
and operated with minimum distance
of 20 cm (8 in.) between the radiator
(antenna) and your body.
This transmitter must not be co-locat-
ed or operating in conjunction with
any other antenna or transmitter.The radio frequency compo- nents (Rear Corner Radar)complies (If equipped):
For Canda
i
i
i
5
DD EECCLLAA RRAA TTIIOO NN OO FF CC OO NNFFOO RR--
M
M IITT YY (( IIFF EE QQ UUIIPP PPEEDD ))
OANATEL004

6-9
What to do in an emergency
1. Pull off the road and stop as soonas it is safe to do so.
2. Shift to P (Park) and set the park- ing brake. If the air conditioning is
on, turn it off.
3. If coolant is running out under the vehicle or steam is coming out
from the hood, stop the vehicle.Do not open the hood until the
coolant has stopped running or
the steaming has stopped. If there
is no visible loss of coolant and no
steam, leave the vehicle running
and check to be sure the vehicle
cooling fan is operating. If the fan
is not running, turn the vehicle off. 4. Check for coolant leaking from the
radiator, hoses or under the vehi-
cle. (If the air conditioning had
been in use, it is normal for cold
water to be draining from it when
you stop.)
5. If coolant is leaking out, stop the vehicle immediately and call the
nearest authorized HYUNDAI
dealer for assistance.
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6
While the vehicle is
running, keep hands,
clothing and tools
away from the mov-
ing parts such as the
cooling fan to prevent
serious injury.
WARNING
Your vehicle is equipped with a pres-
surized coolant
reserve tank. NEVER
remove the coolant
reserve tank cap or the radiatordrain plug while the radiator is
HOT. Hot coolant and steam
may blow out under pressure,
causing serious injury.
Turn the vehicle off and wait
until the vehicle 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 thepressure is released.
When you are sure all the pres-
sure has been released, contin-ue turning the cap counter-
clockwise to remove it.
WARNING

6-10
6. If you cannot find the cause of the
overheating, wait until the radiator
temperature has returned to nor-
mal. Then, if coolant has beenlost, 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 overheat-
ing. If overheating happens again,
call an authorized HYUNDAI deal-
er for assistance.
What to do in an emergency
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

7-3
7
Maintenance
FFUU EELL CC EE LLLL PP OO WW EERR MM OODDUU LLEE CC OO MM PPAA RRTTMM EENN TT
1. Brake fluid reservoir
2. Air cleaner
3. Fuse box
4. Windshield washer fluid reservoir
5. Device cooling coolant reservoir
6. Traction motor radiator cap
7. Stack cooling coolant reservoir
8. Fuel cell stack radiator cap
OFE078001
The actual fuel cell power module compartment in the vehicle may differ from the illus- tration.