maintenance HYUNDAI NEXO 2021 Repair Manual

Fuel cell power module com-partment fuse panel
Inside the fuse/relay box cover, you
can find the fuse/relay label describ-
ing fuse/relay name and capacity.
Information
Not all fuse panel descriptions in this
manual may be applicable to your
vehicle; the information is accurate at
the time of printing. When you inspect
the fuse panel in your vehicle, refer to
the fuse panel label.
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MaintenanceOFE078025
OFE078048N

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Maintenance
Motor compartment fuse panel
TypeFuse NameFuse RatingCircuit Protected
MULTI FUSE-1
B+260AICU Junction Block (IPS Control Module, IPS1)
B+360AICU Junction Block (IPS Control Module)
COOLING PE PUMP40APE Room Coolant Pump (CPP)
EPB240AElectronic Brake Control Module
IG240APE Room Junction Block (IG2 Relay)
EPB140AElectronic Brake Control Module, PE Room Junction Block (Multipurpose Check Connector)
B+460AICU Junction Block (Fuse - SUNROOF1, SUNROOF2, AMP, P/SEAT DRV,
P/SEAT PASS, S/HEATER FRT, P/WINDOW LH, P/WINDOW RH, TAIL GATE OPEN)
IMEB80AElectronic Brake Control Module
MULTI FUSE-2
BLOWER50APE Room Junction Block (Blower Relay)
MDPS80AMDPS Unit

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Maintenance
Motor compartment fuse panel
TypeFuse NameFuse RatingCircuit Protected
FUSE
HVJB LV15AHV Junction Block
RCU15ADriver / Passenger Auto Flush Door Handle Module,
Rear Auto Flush Door Handle Module LH/RH
FUEL DOOROPEN7.5AICM Relay Box (Fuel Filler Door Relay)
E-SHIFTER40APE Room Junction Block (E-Shifter Relay)
INVERTER30AAC Inverter
REAR
HEATED40APE Room Junction Block (Rear Heated Relay)
B+150AICU Junction Block ((Fuse - MODULE1, AIR BAG2, MODULE8,
S/HEATER RR, DOOR LOCK, IBU1, BRAKE SWITCH), Leak Current Autocut Relay)
POWER
TAIL GATE30APower Tail Gate Module
WIPER FRT30AFront Wiper Motor
COOLING
STACK PUMP10AStack Coolant Pump (CSP)
INVERTER LV7.5AInverter

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Maintenance
TypeFuse NameFuse RatingCircuit Protected
FUSE
BHDC7.5AIDC
HMU110AHMU
BATTERY
MANAGEMENT10ABMS Control Module
FUEL CELL
CONTROL UNIT15AFCU
BMS FAN15APE Room Junction Block (BMS FAN Relay)
Motor compartment fuse panel

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Maintenance
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Consult an authorized HYUNDAI
dealer to replace most vehicle light
bulbs. It is difficult to replace vehicle
light bulbs because other parts of the
vehicle must be removed before you
can get to the bulb. This is especially
true for removing the headlamp
assembly to get to the bulb(s).
Removing/installing the headlamp
assembly can result in damage to
the vehicle.
Information
The headlamp and tail lamp lenses
could appear frosty if the vehicle is
washed after driving or the vehicle is
driven at night in wet weather. This
condition is caused by temperature
difference between the lamp inside
and outside and, it does not indicate a
problem with your vehicle. When
moisture condenses in the lamp, it will
be removed after driving with the
headlamp on. The removable level
may differ depending on lamp size,
lamp position and environmental con-
dition. However, if moisture is not
removed, we recommend that your
vehicle is inspected by an authorized
HYUNDAI dealer.
Information
• A normally functioning lamp may
flicker momentarily to stabilize the
vehicle’s electrical control system.
However, if the lamp goes out after
flickering momentarily, or contin-
ues to flicker, we recommend the
system be checked by an authorized
HYUNDAI dealer.
• The parking lamp may not turn on when the parking lamp switch is
turned on, but the parking lamp
and headlamp switch may turn on
when the headlamp switch is turned
on. This may be caused by network
failure or vehicle electrical control
system malfunction. If this occurs,
we recommend the system be
checked by an authorized
HYUNDAI dealer.
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•Prior to replacing a lamp, shift
to P (Park), apply the parking
brake, place the POWER but-
ton in the OFF position and
take the key with you when
leaving the vehicle to avoid
sudden movement of the vehi-
cle and to prevent possible
electric shock.
Be aware the bulbs may be
hot and may burn your fin-
gers.
WARNING

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Maintenance
Headlamp, front center lamp,
turn signal lamp, daytime run-
ning lamp, parking lamp,
side marker replacement
(1) Headlamp (Low/High)
(2) Front center lamp
(3) Turn signal/daytime running
lamp/parking lamp
(4) Side marker Your vehicle is equipped with LED
lamps. LED lamps do not have
replaceable bulbs. If the LED lamp
does not operate, have the vehicle
checked by an authorized HYUNDAI
dealer.
Information
The headlamp aiming should be
adjusted after an accident or after the
headlamp assembly is reinstalled at an
authorized HYUNDAI dealer.
Side Repeater Lamp
Replacement
Your vehicle is equipped with LED
lamps. LED lamps do not have
replaceable bulbs. If the LED lamp
does not operate, have the vehicle
checked by an authorized HYUNDAI
dealer.
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OFE078028N
OFE078029

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Maintenance
Rear Combination Light Bulb
Replacement
(1) Turn signal lamp/stop lamp
(2) Turn signal lamp/stop lamp
(3) Tail lamp
(4) Backup lamp
(5) Side marker
Stop lamp, tail lamp, turn signallamp, backup lamp and sidemarker
Your vehicle is equipped with LED
lamps. LED lamps do not have
replaceable bulbs. If the LED lamp
does not operate, have the vehicle
checked by an authorized HYUNDAI
dealer.
High mounted stop lamp
If the high mounted stop lamp does
not operate, have the vehicle
checked by an authorized HYUNDAI
dealer.OFE078040N
OFE078031

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Maintenance
License Plate Light Bulb
Replacement
1. Using a flat-blade screwdriver,gently pry the lens cover from the
lamp housing.
2. Remove the bulb by pulling it straight out.
3. Install a new bulb.
4. Reinstall in the reverse order.
OFE078032
Interior Light Bulb Replacement
Map lamp, room lamp and luggage compartment lamp
OFE078034
■ Room lamp (Type B)
OFE078036
■Luggage compartment lamp
OFE078033
■Map lamp
OAEE076027
■Room lamp (Type A)
Your vehicle is equipped with LED lamps. LED lamps do not have replace-
able bulbs. If the LED lamp does not operate, have the vehicle checked by an
authorized HYUNDAI dealer.

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Maintenance
1. Using a flat-blade screwdriver,gently pry the lens from the interi-
or lamp housing.
2. Remove the bulb by pulling it straight out.
3. Install a new bulb in the socket.
4. Align the lens tabs with the interi- or lamp housing notches and snap
the lens into place.
Use care not to dirty or damage
lens, lens tab, and plastic hous-
ings.
NOTICE
Prior to working on the Interior
Lights, ensure that the lamp is
off to avoid burning your fingers
or receiving an electric shock.
WARNING
■ Vanity mirror lamp
■ Glove box lamp
OFE078035
OFE078037
Vanity mirror lamp and glove box lamp

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Maintenance
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Exterior Care
Exterior general caution
It is very important to follow the label
directions when using any chemical
cleaner or polish. Read all warning
and caution statements that appear
on the label.
High-pressure washing
When using high-pressure wash-
ers, make sure to maintain suffi-
cient distance from the vehicle.
Insufficient clearance or excessive
pressure can lead to component
damage or water penetration.
Do not spray the camera, sensors or its surrounding area directly with
a high pressure washer. Shock
applied from high pressure water
may cause the device to not oper-
ate normally.
Do not bring the nozzle tip close to boots (rubber or plastic covers)or
connectors as they may be dam-
aged if they come into contact with
high pressure water.
Do not use any high-pressure noz- zles, which induce either one-direct
water stream or water swirling.
Protecting your vehicle’s finish
Washing
To help protect your vehicle’s finish
from rust and deterioration, wash it
thoroughly and frequently at least
once a month with lukewarm or cold
water.
If you use your vehicle for off-road
driving, you should wash it after each
off-road trip. Pay special attention to
the removal of any accumulation of
salt, dirt, mud, and other foreign
materials. Make sure the drain holes
in the lower edges of the doors and
rocker panels are kept clear and
clean.
Insects, tar, tree sap, bird droppings,
industrial pollution and similar
deposits can damage your vehicle’s
finish if not removed immediately.
Even prompt washing with plain
water may not completely remove all
these deposits. A mild soap, safe for
use on painted surfaces, should be
used. After washing, rinse the vehicle thor-
oughly with lukewarm or cold water.
Do not allow soap to dry on the fin-
ish.
After washing the vehicle, test
the brakes while driving slowly
to see if they have been affected
by water before getting on the
road. If braking performance is
impaired, dry the brakes by
applying them lightly while
maintaining a slow forward
speed.
WARNING