2023 GENESIS G90 ignition

8-27
08
How to Adjust Tire Pressure
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1. Park your vehicle in a safe location.
2. Connect the filling hose O of the
compressor directly to the tire valve.
3. Plug the compressor power cord into
the vehicle power outlet.
4. Adjust the tire inflation pressure to
the recommended tire inflation. With
the ignition switched on, proceed as
follows.
-To increase the inflation pressure:
Switch on the compressor. To
check the current inflation pressure
setting, briefly switch off the
compressor.
-To reduce the inflation pressure:
Press the button U on the
compressor.
NOTICE
Do not let the compressor run for more
than 10 minutes, otherwise the device
will overheat and may be damaged.
Information
• The pressure gauge may show
higher than actual reading when the
compressor is running. To get an
accurate tire reading, the compressor
needs to be turned off.
• When reinstalling the repaired or
replaced tire and wheel on the vehicle,
tighten the wheel bolt to 101~116 lbf·ft
(14~16 kgf·m).
CAUTION
Do not use the sealant when the tire
pressure only needs to be adjusted.
WARNING
The tire inflation pressure must be at
least 32 psi (220 kPa). If it is not, do not
continue driving.
Call for road side service or towing.
008_RS4_HMA.indd 8-272022-04-18  3:48:15

9-13
09
Engine Oil and Filter
The engine oil and filter should be
changed at the intervals specified in the
maintenance schedule. If the vehicle
is being driven in severe conditions,
more frequent oil and filter changes are
required.
Drive Belts
Inspect all drive belts for evidence
of cuts, cracks, excessive wear or oil
saturation and replace if necessary.
Drive belts should be checked
periodically for proper tension and
adjusted as necessary.
Information
When you are inspecting the belt, turn the
engine off.
Fuel Lines, Fuel Hoses and
Connections
Check the fuel lines, fuel hoses and
connections for leakage and damage.
Have an authorized retailer of Genesis
Branded products replace any damaged
or leaking parts immediately.
Fuel Filter
The fuel filter is considered to be
maintenance free but periodic inspection
is recommended for this maintenance
depends on fuel quality. If there are
some important matters like fuel flow
restriction, surging, loss of power, hard
starting problem etc., replace the fuel
filter immediately. Have you consult an
authorized retailer of Genesis Branded
products for details.
Vapor Hose and Fuel Filler Cap
The vapor hose and fuel filler cap should
be inspected at those intervals specified
in the maintenance schedule. Make sure
a new vapor hose or fuel filler cap is
correctly replaced.
Air Cleaner Filter
We recommend that the air cleaner filter
be replaced by an authorized retailer of
Genesis Branded products.
Spark Plugs
Make sure to install new spark plugs of
the correct heat range.
When assembling parts, be sure to
wipe out foreign substances inside
and outside of the boot bottom of the
ignition coil and the insulator of the
spark plug with a soft cloth to prevent
contamination of the spark plug
insulator.
Cooling System
Check cooling system components, such
as radiator, coolant reservoir, hoses and
connections for leakage and damage.
Replace any damaged parts.
EXPLANATION OF SCHEDULED MAINTENANCE ITEMS

9-28
Maintenance
WARNING
To prevent SERIOUS INJURY or DEATH
to you or bystanders, always follow
these precautions when working near
or handling the battery:
Always read and follow
instructions carefully when
handling a battery.
Wear eye protection designed
to protect the eyes from acid
splashes.
Keep all flames, sparks, or
smoking materials away from
the battery.
Hydrogen is always present
in battery cells, is highly
combustible, and may explode
if ignited.
Keep batteries out of reach of
children.
Batteries contain sulfuric acid
which is highly corrosive. Do
not allow acid to contact your
eyes, skin or clothing.
If acid gets into your eyes, flush your
eyes with clean water for at least 15
minutes and get immediate medical
attention. If acid gets on your skin,
thoroughly wash the area. If you feel
pain or a burning sensation, get medical
attention immediately.
[When lifting a plastic-cased battery,
excessive pressure on the case may
cause battery acid to leak. Lift with a
battery carrier or with your hands on
opposite corners.

[Do not attempt to jump start your
vehicle if your battery is frozen.

[NEVER attempt to recharge the
battery when the vehicle’s battery
cables are connected to the battery.

[The electrical ignition system works
with high voltage. NEVER touch
these components with the engine
running or when the Engine Start/
Stop button is in the ON position.

[Don’t remove the battery vent
hose. When the battery vent hose is
removed, insert it into the vent hole.
WARNING
CALIFORNIA PROPOSITION 65
WARNING
Battery posts, terminals, and related
accessories contain lead and lead
compounds, chemicals known to the
State of California to cause cancer,
birth defects and reproductive harm.
Batteries also contain other chemicals
known to the State of California
to cause cancer. Wash hands after
handling.
BATTERY

9-55
09
Engine compartment fuse panel
Fuse NameFuse
RatingCircuit Protected
IG130A IG1 Relay
ECU330A Engine Control Relay
IG230A IG2 Relay
ACC30A ACC Relay
ECU210A ECM
EWP20A Electronic Water Pump
MODULE110A Front Radar, Front Corner Radar LH/RH
MDPS210A MDPS Unit
IEB310A IEB Unit
TCU215A TCM, P/N Relay, Electronic Oil Pump
SENSOR310A Oxygen Sensor #1 (B1/S1), Oxygen Sensor #2 (B2/S1)
SENSOR210AOxygen Sensor #3 (B1/S2), Oxygen Sensor #4 (B2/S2),
Purge Control Solenoid Valve, Oil Pump Solenoid Valve,
Canister Close Valve, Oil Control Valve (Intake #1/#2), Oil
Control Valve (Exhaust #1/#2), RCV Control Solenoid Valve
#1/#2, E/R Junction Block (A/C Relay)
SENSOR110AE/R Junction Block (Fuel Pump Relay), Injector
#1/#2/#3/#4/#5/#6 (MPI)
IGN COIL15A Ignition Coil #1/#2/#3/#4/#5/#6
SENSOR415A Cooling Fan Motor, Electric Super Charging Unit (Signal)
ECU420A ECM
WASHER15A WASHER RELAY
MHSG10A[With Mild HEV] Mild Hybrid Starter & Generator Motor
(Signal)