2018 Hyundai Sonata Plug-in Hybrid Owner's Manual

7-70
Maintenance
Headlamp (LED type)
If the LED lamp does not operate,
have the system checked by an
authorized HYUNDAI dealer.
Turn signal lamp
1. Open the hood.
2. Disconnect the negative batterycable.
3. Remove the socket from the assembly by turning the socket
counterclockwise until the tabs on
the socket align with the slots on
the assembly.
4. Remove the bulb from the socket by pressing it in and rotating it
counterclockwise until the tabs on
the bulb align with the slots in the
socket. Pull the bulb out of the
socket. 5. Install a new bulb by inserting it
into the socket and rotating it until
it locks into place.
6. Install the socket in the assembly by aligning the tabs on the socket
with the slots in the assembly.
7. Push the socket into the assembly and turn the socket clockwise.
OLF077052N
Turn signal lamp

7-71
7
Maintenance
Side marker lamp
1. Open the hood.
2. Disconnect the negative batterycable.
3. Remove the socket from the assembly by turning the socket
counterclockwise until the tabs on
the socket align with the slots on
the assembly.
4. Remove the bulb from the socket by pulling out the bulb.
5. Insert a new bulb.
Daytime running lamp/
Parking lamp (LED type)
If the LED lamp does not operate,
have the vehicle checked by an
authorized HYUNDAI dealer.
Side repeater lamp replace-
ment
If the LED lamp does not operate,
have the vehicle checked by an
authorized HYUNDAI dealer.
OLF077053
OLF077074
Side marker lamp

7-72
Maintenance
Rear combination light bulb
replacement
(1) Stop/Tail lamp
(2) Turn signal lamp
(3) Tail lamp
(4) Back-up lamp
(5) Rear side marker (LED) (if equipped)
Stop/Tail lamp and Turn signal
lamp (Bulb type)
1. Open the trunk lid.
2. Remove the service cover by turn-ing the lock counterclockwise and
then pulling it out. 3. Remove the socket from the
assembly by turning the socket
counterclockwise until the tabs on
the socket align with the slots on
the assembly.
4. Remove the bulb from the socket by pressing it in and rotating it
counterclockwise until the tabs on
the bulb align with the slots in the
socket. Pull the bulb out of the
socket.
5. Install a new bulb by inserting it into the socket and rotating it until
it locks into place.OLF077060
OLF074062OLF077128
Stop/Tail lamp
Turn Signal lamp

7-73
7
Maintenance
6. Install the socket in the assemblyby aligning the tabs on the socket
with the slots in the assembly.
Push the socket into the assembly
and turn the socket clockwise.
Stop/Tail lamp and rear side mark-
er (LED type)
If the LED lamp does not operate,
have the vehicle checked by an
authorized HYUNDAI dealer.
Back-up lamp and tail lamp
1. Open the trunk.
2. Loosen the retaining screw of thetrunk lid cover and then remove
the cover.
3. Disconnect the connector and then remove the screws by turning
the screws counterclockwise. 4. Remove the bulb by pulling it
straight out.
5. Install a new bulb by inserting it into the socket and rotating it until
it locks into place.
6. Install the socket into the assem- bly by aligning the tabs on the
socket with the slots in the assem-
bly. Push the socket into the
assembly and turn the socket
clockwise.
7. Reinstall the trunk lid cover by pushing in the screw.
OLF077065OLF077064

7-74
Maintenance
High mounted stop lamp
1. Remove the rear seat cushionassembly.
2. Remove the rear seat back assem- bly.
3. Slightly remove the rear door weather-strip.
4. Remove the rear door scuff trim.
5. Remove the rear pillar trim.
6. Remove the rear seat belt lower anchor.
7. Remove the rear package tray trim.
8. Remove the high mounted stop lamp after disengaging the mount-
ing clip.
9. Install a new LED lamp.
License plate light bulb
replacement
1. Loosen the lens retaining screws with a philips head screwdriver.
2. Remove the lens.
3. Remove the bulb by pulling it straight out.
4. Install a new bulb.
5. Reinstall the lens securely with the lens retaining screws.
Interior light bulb replacement
Map lamp and Room lamp
If the LED lamp does not operate,
have the vehicle checked by an
authorized HYUNDAI dealer.
OLF077055
OLF077066OLF047034
OLF077071
■Map lamp - with sunroof
■Room lamp - with sunroof

7-75
7
Maintenance
1. Using a flat-head screwdriver,gently pry the lens from the interi-
or light 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 light housing notches and snap
the lens into place.
If the lamps do not operating, have
the vehicle checked by an authorized
HYUNDAI dealer.
Use care not to dirty or damage
lenses, lens tabs, and plastic
housings.
NOTICE
■ Map lamp - without sunroof
OTL045276
OLF074082N
■Vanity mirror lamp
■Trunk room lamp
OLF074069
OLF074056
■ Room lamp - without sunroof
Map lamp, Room lamp, Vanity mirror lamp and Luggage room lamp

7-76
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

7-77
7
Maintenance
Waxing
A good coat of wax provides a barri-
er between your paint and environ-
mental contamination.
Keeping a good coat of wax on your
vehicle will help protect it.
Wax the vehicle when water will no
longer bead on the paint.
Always wash and dry the vehicle
before waxing. Use a good quality
liquid or paste wax, and follow the
manufacturer’s instructions. Wax all
metal trim to protect it and to main-
tain its luster.
Removing oil, tar, and similar materi-
als with a spot remover will usually
strip the wax from the finish. Be sure
to re-wax these areas even if the rest
of the vehicle does not yet need wax-
ing.
OLMB073082
Water washing in the engine
compartment including high
pressure water washing may
cause the failure of electrical
circuits located in the engine
compartment.
Never allow water or other liq-
uids to come in contact with
electrical/electronic compo-
nents inside the vehicle as
this may damage them.
CAUTION
Wiping dust or dirt off the
body with a dry cloth will
scratch the finish.(Continued)
CAUTION
Do not use strong soap,
chemical detergents or hot
water, and do not wash the
vehicle in direct sunlight or
when the body of the vehicle
is warm.
Be careful when washing the
side windows of your vehicle.
Especially, with high-pressure
water, water may leak through
the windows and wet the inte-
rior.
To prevent damage to the
plastic parts, do not clean
with chemical solvents or
strong detergents.
CAUTION