2021 GENESIS G90 Owner's Manual

5-37
05
Driving with wheel and tire sizes dif-
ferent than original-equipment may
cause the ESC system to malfunc-
tion. Before replacing tires, make
sure all four tires and wheels are the
same as the original size. Never
drive the vehicle with different sized
tires and wheels installed.
Hill-Start Assist Control (HAC)
The Hill-Start Assist Control helps
prevent the vehicle from rolling back-
wards when starting a vehicle from a
stop on a hill. The system operates
the brakes automatically for approxi-
mately 2 seconds and releases the
brake after 2 seconds or when the
accelerator pedal is depressed.
• The HAC does not operate when
the gear is shifted to P (Park) or
N (Neutral).
• The HAC activates even though
the ESC (Electronic Stability
Control) is off but does not acti-
vate when the ESC has malfunc-
tioned.
NOTICE
If the ESC indicator light ( ) or
MDPS warning light ( ) stays
on or blinks, your vehicle may
have a malfunction with the
VSM system.When the warning
light illuminates, have your vehi-
cle checked by an authorized
retailer of Genesis Branded
products as soon as possible.
WARNING
Always be ready to depress the
accelerator pedal when starting
off on a incline. The HAC acti-
vates only for approximately 2
seconds.
WARNING

5-38
Driving your vehicle
Good Braking Practices
Wet brakes can be dangerous! The
brakes may get wet if the vehicle is
driven through standing water or if it
is washed. Your vehicle will not stop
as quickly if the brakes are wet. Wet
brakes may cause the products to
pull to one side.
To dry the brakes, apply the brakes
lightly until the braking action returns
to normal, taking care to keep the
vehicle under control at all times. If
the braking action does not return to
normal, stop as soon as it is safe to
do so and call an authorized retailer
of Genesis Branded products for
assistance.
DO NOT drive with your foot resting
on the brake pedal. Even light, but
constant pedal pressure can result in
the brakes overheating, brake wear,
and possibly even brake failure.If a tire goes flat while you are driv-
ing, apply the brakes gently and
keep the vehicle pointed straight
ahead while you slow down. When
you are moving slowly enough for it
to be safe to do so, pull off the road
and stop in a safe location.
Keep your foot firmly on the brake
pedal when the vehicle is stopped to
prevent the vehicle from rolling for-
ward. Whenever leaving the vehicle or
parking, always come to a com-
plete stop and continue to
depress the brake pedal. Shift
the gear to P (Park), apply the
parking brake, and press the
Engine Start/Stop button to the
OFF.
Vehicles with the parking brake
not fully engaged are at risk for
moving inadvertently and caus-
ing injury to yourself or others.
WARNING

Using All Wheel Drive (AWD)
The All Wheel Drive system delivers
engine power to front and rear
wheels for maximum traction. AWD is
useful when extra traction is
required, such as when driving on,
muddy, wet, or snow-covered roads.
If the system determines there is a
need for four wheel drive, the
engine's driving power is distributed
to all four wheels automatically.
ALL WHEEL DRIVE (AWD) (IF EQUIPPED)
5-39
05
If the AWD warning light ( )
stays on the instrument cluster,
your vehicle may have a mal-
function with the AWD system.
When the AWD warning light
( ) illuminates have your
vehicle checked by an author-
ized retailer of Genesis Branded
products as soon as possible.
WARNING
To reduce the risk of SERIOUS
INJURY or DEATH:
• Do not drive in conditions that
exceed the vehicles intended
design such as challenging
off-road conditions.
• Avoid high speeds when cor-
nering or turning.
• Do not make quick steering
wheel movements, such as
sharp lane changes or fast,
sharp turns.
• The risk of a rollover is great-
ly increased if you lose con-
trol of your vehicle at highway
speeds.
• Loss of control often occurs if
two or more wheels drop off
the roadway and the driver
over steers to reenter the
roadway.
• In the event your vehicle
leaves the roadway, do not
steer sharply. Instead, slow
down before pulling back into
the travel lanes.
• Always drive safely and use
caution when driving an AWD
vehicle.
WARNING

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

Driving in sand or mud
• Maintain slow and constant speed.
• Keep sufficient distance between
your vehicle and the vehicle in front
of you.
• Reduce vehicle speed and always
check the road condition.
• Avoid speeding, rapid acceleration,
sudden brake applications, and
sharp turns to prevent getting
stuck.
When the vehicle is stuck in snow,
sand or mud, avoid running the
engine continuously at high rpm,
doing so may damage the tires,
transmission, differential or AWD
system.
Information
• When using Snow Tires, mount
them on all four wheels.
• When using AutoSock
®(fabric snow
chain), install them on the rear tires.
For more information on Snow Tires
and Tire Chains, refer to "Winter
Driving" in this chapter.
Driving up or down hills
• Driving uphill
- Before starting off, check if it is
possible to drive uphill.
- Drive as straight as possible.
• Driving downhill
- Do not change gear while driving
downhill. Select gear before driv-
ing downhill.
- Drive slowly and select Manual
Shift Mode to provide engine
braking while driving downhill.
- Drive straight as possible.
i
NOTICE
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05
Exercise extreme caution driv-
ing up or down steep hills. The
vehicle may flip depending on
the grade, terrain and water/
mud conditions.
WARNING

Emergency Precautions
Tires
When replacing the tires, be sure to
equip all four tires with the same
size, type, tread, brand and load-car-
rying capacity.
In an emergency situation, a com-
pact spare tire may be used. But, do
not use the compact spare tire con-
tinuously. Repair or replace the origi-
nal tire as soon as possible to avoid
failure of the differential or AWD sys-
tem.
Tire size mismatch. Check all tire
sizes.
If your vehicle is equipped with differ-
ent tires (size, type, etc.) on the front
and rear, the message will appear. To
use the AWD system, equip the vehi-
cle with the same tires on the front
and rear.
5-42
Driving your vehicle
Do not use tire and wheel with
different size and type from the
one originally installed on your
vehicle. It can affect the safety
and performance of your vehi-
cle, which could lead to steering
failure or rollover causing seri-
ous injury.
WARNING
OHI058226L
Never start or run the engine
while an AWD vehicle is raised
on a jack. The vehicle can slip or
roll off of a jack causing serious
injury or death to you or those
nearby.
WARNING
OHI059029N

Towing
AWD vehicles must be towed with all
wheels off the ground, either on a
flatbed tow truck or using doilies.
For more details, refer to "Towing"
in chapter 6.
Vehicle inspection
• If the vehicle needs to be operated
on a vehicle lift do not attempt to
stop any of the four wheels for turn-
ing. This could damage the sys-
tem.
• Never engage the parking brake
while running the engine on a car
lift. This may damage the AWD
system.
Dynamometer testing
An AWD vehicle must be tested on a
special four wheel chassis dynamome-
ter.
An AWD vehicle should not be tested
on a 2WD roll tester. If a 2WD roll
tester must be used, perform the fol-
lowing procedure:
1. Check the tire pressures recom-
mended for your vehicle.
2. Place the rear wheels on the roll
tester for a speedometer test as
shown in the illustration.
3. Release the parking brake.
4. Place the front wheels on the tem-
porary free roller as shown in the
illustration.
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05
OHI058031Roll Tester (Speedometer)
Temporary Free Roller
Keep away from the front of the
vehicle while the vehicle is in
gear on the dynamometer. The
vehicle can jump forward and
cause serious injury or death.
WARNING

5-44
Driving your vehicle
Electronic Control Suspension
(ECS)
The Electronic Control Suspension
controls the vehicle suspension
automatically to maximize driving
comfort by taking into account the
driving conditions such as speed,
surface of the road, cornering, stop-
ping requirements and acceleration.
ECS (Electronic Control
Suspension) malfunction indi-
cator
Check Electronic Suspension
If the ECS warning message comes
on, you may have a problem with the
ECS system. Have the system be
checked by an authorized retailer of
Genesis Branded products.
Dynamic Stability Damping
Control (DSDC)
The Dynamic Stability Damping
Control provides comfort riding and
driving stability by meticulously opti-
mizing the suspension power during
sharp curving or abrupt obstacle
avoidance.
Operating conditions
• The DSDC is activated, when driv-
ing speed exceeds 30 mph (50
km/h).
• The DSDC does not operate, when
the Electronic Stability Control is
deactivated.
The Dynamic Stability Damping
Control does not operate, when
there is a malfunction with the
Electronic Stability Control.
The Dynamic Stability Damping
Control operation is limited in fol-
lowing situations:
- There are wide variations in tire
pressures.
- The vehicle is driven on a steep
slope.
- The vehicle is driven on a rough,
rugged surface.
NOTICE
GENESIS ADAPTIVE CONTROL SUSPENSION (IF EQUIPPED)
NEVER install any tires/wheels
in different sizes or of different
models on your vehicle. It may
cause a malfunction of the
Dynamic Stability Damping
Control.
WARNING
OHI048132L