2021 GENESIS G90 maintenance

3-86
Convenient features of your vehicle
The Head-Up Display is an optional
feature that allows the driver to view
information projected onto a trans-
parent screen while still keeping your
eyes safely on the road ahead while
driving.
Precautions while using the
Head-Up Display
It may sometimes be difficult to read
information on the Head-Up Display
in the following situations.
- The driver is improperly positioned
in the driver's seat.
- The diver wears polarizing-filter
sunglasses.
- An object is located above the
head-up display cover.
- The vehicle is driven on a wet road.
- Any improper lighting accessory is
installed inside the vehicle, or there
is incoming light from outside of the
vehicle.
- The driver wears glasses.
- The driver wears contact lenses.
When it is difficult to read the head-
up display information, adjust the
head-up display angle or the head-
up display brightness level.Have your head-up display main-
tained by an authorized retailer of
Genesis Branded products. The
head-up display maintenance
requires a special windshield exclu-
sive for the head-up display.
• Do not tint the front windshield
glass or add other types of
metallic coating. Otherwise, the
head-up display image may be
invisible.
• Do not place any accessories on
the crash pad or attach any
objects on the windshield glass.
Information
When replacing the front windshield
glass of the vehicles equipped with the
head-up display, replace it with a
windshield glass designed for the
head-up display operation.
Otherwise, duplicated images may be
displayed on the windshield glass.
i
NOTICE
HEAD-UP DISPLAY (IF EQUIPPED)
The Blind-spot Collision Warning
(BCW) system warnings on the
head up display are supplemen-
tal. Do not solely depend on
them to change lanes. Always
take a look around before chang-
ing lanes.
WARNING
OHI049401N

3-124
Convenient features of your vehicle
When using the air conditioning
system, monitor the engine tem-
perature gauge closely while driv-
ing up hills or in heavy traffic when
outside temperatures are high. Air
conditioning system operation
when climbing a steep grade or in
high outside ambient temperatures
can cause engine overheating.
Continue to use the fan, but turn
the air conditioning system off if
the engine temperature gauge
indicates engine overheating.
Air conditioning system operation
tips
• If the vehicle has been parked in
direct sunlight during hot weather,
open the windows for a short time
to let the hot air inside the vehicle
escape.
• After sufficient cooling has been
achieved, switch back from recir-
culation mode to fresh mode.
• To help reduce moisture inside of
the windows on rainy or humid
days, decrease the humidity inside
the vehicle by operating the air
conditioning system with the win-
dows and sunroof closed.
• Use the air conditioning system
every month only for a few minutes
to ensure maximum system per-
formance.
• If you operate air conditioner
excessively, the difference between
the temperature of the outside air
and that of the windshield could
cause the outer surface of the
windshield to fog up, causing loss
of visibility. In this case, set the
mode selection knob or button to
the position and fan speed
control to the lowest speed.
System Maintenance
Cabin air filter
[A] : Outside air, [B] : Recirculated air
[C] : Climate control air filter, [D] : Blower
[E] : Evaporator core, [F] : Heater core
The cabin air filter is installed behind
the glove box. It filters the dust or
other pollutants that enter the vehicle
through the heating and air condi-
tioning system.
Have the cabin air filter replaced by
an authorized retailer of Genesis
Branded products according to the
maintenance schedule. If the vehicle
is being driven in severe conditions
such as dusty or rough roads and/or
if transporting pets or occupants
smoke inside the vehicle, then more
frequent cabin air filter inspections
and changes are required.
If the air flow rate suddenly decreas-
es, the system should be checked at
an authorized retailer of Genesis
Branded products.
NOTICE
OHI048581L

Information
• Do not drive in water if the level is
higher than the bottom of the vehi-
cle.
• Check your brake condition once
you are out of mud or water.
Depress the brake pedal several
times as you move slowly until you
feel normal braking return.
• Shorten your scheduled mainte-
nance interval if you drive in off-
road conditions such as sand, mud
or water (see "Maintenance Under
Severe Usage Conditions" in chap-
ter 7).
• Make sure that an AWD vehicle is
towed by flatbed tow truck.
For safe AWD operation
Before driving
• Make sure all passengers are
wearing seat belts.
• Sit upright and adjust the steering
wheel to a position comfortable for
you to drive.
Driving on snow-covered or icy
roads
• Start off slowly by applying the
accelerator pedal gently.
• Use of snow tires is recommended.
For more information on Snow
Tires refer to "Winter Driving" in
this chapter.
• Keep sufficient distance between
your vehicle and the vehicle in front
of you.
• When approaching a stop sign or
stop light, release the accelerator
pedal to provide engine braking
during deceleration.
• Avoid speeding, rapid acceleration,
sudden brake applications, and
sharp turns to prevent skids.
i
5-40
Driving your vehicle

5-155
05
Chain Installation
When installing AutoSock®(fabric
snow chain), follow the manufactur-
er's instructions and mount them as
tightly as possible. Drive slowly (less
than 20 mph (30 km/h)) with
AutoSock
®installed. If you hear the
fabric snow chains contacting the
body or chassis, stop and tighten
them. If they still make contact, slow
down until the noise stops. Remove
the AutoSock
®(fabric snow chain) as
soon as you begin driving on cleared
roads.
When mounting AutoSock
®(fabric
snow chain), park the vehicle on
level ground away from traffic.
Turn on the vehicle Hazard Warning
Flasher and place a triangular emer-
gency warning device behind the
vehicle (if available).
Always place the vehicle in P (Park),
apply the parking brake and turn off
the engine before installing
AutoSock
®.
When using AutoSock
®(fabric
snow chain):
• Wrong size fabric snow chains
or improperly installed fabric
snow chains can damage your
vehicle's brake lines, suspen-
sion, body and wheels.
• If you hear noise caused by fabric
snow chains contacting the body,
retighten the chain to prevent
contact with the vehicle body.
• To prevent body damage,
retighten the fabric snow chains
after driving 0.3~0.6 miles
(0.5~1.0 km).
AutoSock
®is a Registered trade-
mark of AutoSock.
Winter Precautions
Use high quality ethylene glycol
coolant
Your vehicle is delivered with high
quality ethylene glycol coolant in the
cooling system. It is the only type of
coolant that should be used because
it helps prevent corrosion in the cool-
ing system, lubricates the water
pump and prevents freezing. Be sure
to replace or replenish your coolant
in accordance with the maintenance
schedule in chapter 7. Before winter,
have your coolant tested to assure
that its freezing point is sufficient for
the temperatures anticipated during
the winter.
Change to "winter weight" oil if
necessary
In some climates it is recommended
that a lower viscosity "winter weight"
oil be used during cold weather. See
chapter 8 for recommendations. If
you aren't sure what weight oil you
should use, consult an authorized
retailer of Genesis Branded prod-
ucts.
Check battery and cables
Winter puts additional burdens on
the battery system. Visually inspect
the battery and cables as described
in chapter 7. The level of charge in
your battery can be checked by an
authorized retailer of Genesis
Branded products or a service sta-
tion.
NOTICE

7
7. Maintenance
Engine Compartment ....................7-3
Maintenance Services ..................7-5
Owner's Responsibility ....................7-5
Owner Maintenance Precautions ....7-5
Owner Maintenance......................7-6
Owner Maintenance Schedule ........7-7
Scheduled Maintenance Service ..7-8
Normal Maintenance Schedule
(5.0 GDI) ..........................................7-9
Maintenance Under Severe Usage
Conditions (5.0 GDI) ......................7-12
Normal Maintenance Schedule
(3.3 Turbo-GDI) ..............................7-14
Maintenance Under Severe Usage
Conditions (3.3 Turbo-GDI) ..........7-17
Explanation of Scheduled
Maintenance Items ......................7-19
Engine Oil ....................................7-22
Checking the Engine Oil Level ......7-22
Checking the Engine Oil and Filter ..7-23
Engine Coolant ............................7-24
Checking the Engine Coolant
Level................................................7-24
Changing Engine Coolant ..............7-26
Brake Fluid....................................7-27
Checking the Brake Fluid Level......7-27
Washer Fluid ................................7-28
Checking the Washer Fluid Level ..7-28
Air Cleaner ..................................7-29
Filter Replacement ........................7-29
Cabin Air Filter ............................7-30
Filter Inspection..............................7-30
Wiper Blades ................................7-31
Blade Inspection ..............................7-31
Blade Replacement ........................7-31
Battery ..........................................7-33
Battery Usage Recommendations..7-34
Battery Replacement ....................7-34
Battery Recharging ........................7-35
Reset features ................................7-36
Tires and Wheels ........................7-37
Tire Care ..........................................7-37
Recommended Cold Tire Inflation
Pressures ........................................7-38
Check Tire Inflation Pressure ........7-39
Tire Rotation ..................................7-39
Wheel Alignment and Tire
Balance ..........................................7-40
Tire Replacement ............................7-41
Wheel Replacement ......................7-42
Tire Traction ....................................7-42
Tire Maintenance............................7-42
Tire Sidewall Labeling ....................7-42
Tire Terminology and Definitions ..7-46
All Season Tires ..............................7-50
Summer Tires ................................7-50
Snow Tires ......................................7-50
Radial-Ply Tires ..............................7-50
Low Aspect Ratio Tires ..................7-51

7. Maintenance
Fuses ............................................7-52
Instrument Panel Fuse
Replacement..................................7-53
Engine Compartment Panel Fuse
Replacement ................................7-54
Fuse/Relay Panel Description........7-56
Light Bulbs ..................................7-69
Headlamp, Parking Lamp,
Turn Signal Lamp, Daytime Running
Light and Side Marker
Replacement ..................................7-70
Side Repeater Lamp Replacement..7-70
Rear Combination Light Bulb
Replacement ..................................7-71
High Mounted Stop Light
Replacement ..................................7-71
License Plate Light Replacement ..7-72
Interior Light Bulb Replacement....7-72
Appearance Care ........................7-74
Exterior Care....................................7-74
Interior Care....................................7-80
Emission Control System............7-84
Crankcase Emission Control
System ..........................................7-84
Evaporative Emission Control System
Including Onboard Refueling Vapor
Recovery (ORVR) ..........................7-84
Exhaust Emission Control System ..7-85
California Perchlorate Notice ....7-87
7

7-4
Maintenance
1. Engine coolant reservoir
2. Radiator cap
3. Brake fluid reservoir
4. Air cleaner
5. Engine oil dipstick6. Engine oil filler cap
7. Windshield washer fluid reservoir
8. Fuse box
9. Jumper terminal
OHI078003
The actual engine compartment in the vehicle may differ from the illustration.
■5.0 GDI

7-5
07
You should exercise the utmost care
to prevent damage to your vehicle
and injury to yourself whenever per-
forming any maintenance or inspec-
tion procedures.
We recommend you have your vehi-
cle maintained and repaired by an
authorized retailer of Genesis
Branded products. An authorized
retailer of Genesis Branded products
meets Genesis Branded Vehicle's
high service quality standards and
receives technical support from
Genesis Branded Vehicle in order to
provide you with a high level of serv-
ice satisfaction.
Owner's Responsibility
Maintenance service and record
retention are the owner's responsibil-
ity.
You should retain documents that
show proper maintenance has been
performed on your vehicle in accor-
dance with the scheduled mainte-
nance service charts shown on the
following pages. You need this infor-
mation to establish your compliance
with the servicing and maintenance
requirements of your vehicle war-
ranties.
Detailed warranty information is pro-
vided in your Owner's Handbook &
Warranty Information booklet.
Repairs and adjustments required as
a result of improper maintenance or
a lack of required maintenance are
not covered.
Owner Maintenance
Precautions
Inadequate, incomplete or insuffi-
cient servicing may result in opera-
tional problems with your vehicle that
could lead to vehicle damage, an
accident, or personal injury. This
chapter provides instructions only for
the maintenance items that are easy
to perform. Several procedures can
be done only by an authorized retail-
er of Genesis Branded products with
special tools.
Your vehicle should not be modified
in any way. Such modifications may
adversely affect the performance,
safety or durability of your vehicle
and may, in addition, violate condi-
tions of the limited warranties cover-
ing the vehicle.
Certain modifications may also be in
violation of regulations established by
the U.S. Department of Transportation
and other federal or state agencies.
Improper owner maintenance dur-
ing the warranty period may affect
warranty coverage.
For details, read the separate
Owner's Handbook & Warranty
Information booklet provided with
the vehicle.
If you're unsure about any service
or maintenance procedure, have it
done by an authorized retailer of
Genesis Branded products.
NOTICE
MAINTENANCE SERVICES