brake sensor HYUNDAI SONATA 2021 Owner's Manual

6-136
• The vehicle height gets lower or
higher due to heavy loading in a trunk,
abnormal tire pressure, etc.
• When the temperature of the rear
bumper is high.
• When the sensors are blocked by
other vehicles, walls or parking-lot
pillars.
• The vehicle drives on a curved road.
• The road pavement (or the peripheral
ground) abnormally contains metallic
components (i.e. possibly due to
subway construction).
• There is a fixed object near the
vehicle, such as a guardrail.
• While going down or up a steep
road where the height of the lane is
different.
• Driving on a narrow road where trees
or grass or overgrown.
• Driving in rural areas where the sensor
does not detect another vehicle for an
extended period of time.
• Driving on a wet road.
• Driving on a road where the guardrail
or wall is in double structure.
• A big vehicle is near such as a bus or
truck.
• When the other vehicle approaches
very close.
• When the other vehicle passes at a
very fast speed.
• While changing lanes. •
If the vehicle has started at the same
time as the vehicle next to you and
has accelerated.
• When the vehicle in the next lane
moves two lanes away from you or
when the vehicle two lanes away
moves to the next lane from you.
• A motorcycle or bicycle is near.
• A flat trailer is near.
• If there are small objects in the
detecting area such as a shopping
cart or a baby stroller.
• If there is a low height vehicle such as
a sports car.
• The brake pedal is depressed.
• ESC (Electronic Stability Control) is
activated.
• ESC (Electronic Stability Control)
malfunctions.
• The tire pressure is low or a tire is
damaged.
• The brake is reworked.
• The vehicle sharply stops.
• Temperature is extremely low around
the vehicle.
• The vehicle severely vibrates while
driving over a bumpy road, uneven/
bumpy road, or concrete patch.
• The vehicle drives on a slippery
surface due to snow, water puddle,
or ice.
• If the vehicle moves backward after
the vehicle is parked with a diagonal
line
While Driving

06
6-139
OHI058319L
[A] : Structure, [B] : Wall
• Pulling into the parking space where
there is a structure
The system may not operate properly
when pulling in the vehicle to the
parking space where there is a
structure at the back or side of your
vehicle.
In certain instances, when backing
into the parking space, the system
may not detect the vehicle moving
in front of your vehicle. In this case,
the warning or brake may not operate
properly.
Always pay attention to the parking
space while driving.
OHI058320L
• When the vehicle is parked rearward
If the vehicle is parked rearward and
the radar sensor detects the another
vehicle in the rear area of the parking
space, the system can warn or control
braking. Always pay attention to the
parking space while driving.
Information
This device complies with Part 15 of the
FCC rules.
Operation is subject to the following two
conditions:
1.

This device may not cause harmful
interfer

ence.
2.

This device must accept any
interfer

ence received, including
interference that may cause undesired
operation.

07
7-11
Each wheel is equipped with a tire
pressure sensor mounted inside the tire
behind the valve stem (except for the
spare tire). You must use TPMS specific
wheels. It is recommended that you
always have your tires serviced by an
authorized HYUNDAI dealer.
You may not be able to identify a tire
with low pressure by simply looking at it.
Always use a good quality tire pressure
gauge to measure the tire’s inflation
pressure. Please note that a tire that is
hot (from being driven) will have a higher
pressure measurement than a tire that is
cold.
A cold tire means the vehicle has been
sitting for 3 hours and driven for less
than 1 mile (1.6 km) in that 3 hour period.
Allow the tire to cool before measuring
the inflation pressure. Always be sure
the tire is cold before inflating to the
recommended pressure.
WARNING
• The TPMS cannot alert you to severe
and sudden tire damage caused by
external factors such as nails or road
debris.
• If you feel any vehicle instability,
immediately take your foot off
the accelerator, apply the brakes
gradually with light force, and slowly
move to a safe position off the road.
WARNING
Tampering with, modifying, or disabling
the Tire Pressure Monitoring System
(TPMS) components may interfere
with the system’s ability to warn the
driver of low tire pressure conditions
and/or TPMS malfunctions. Tampering
with, modifying, or disabling the Tire
Pressure Monitoring System (TPMS)
components may void the warranty for
that portion of the vehicle.
Information
This device complies with Part 15 of the
FCC rules.
Operation is subject to the following three
conditions:
1.

This device may not cause harmful
interfer

ence.
2.

This device must accept any
interfer

ence received, including
interference that may cause undesired
operation.
3.

Changes or
modifications not expressly
approved by the party responsible
for compliance could void the user’s
authority to operate the equipment.

07
7-19
WARNING
If your vehicle is equipped with a
rollover sensor, place the ignition
switch in the LOCK/OFF or ACC position
when the vehicle is being towed.
The side impact and curtain air bag
may deploy if the sensor detects the
situation as a rollover.
When towing your vehicle in an
emergency without wheel dollies:
1.
Place the ignition s
witch in the ACC
position.
2.

Place the shift butt
on in N (Neutral).
3.

R
elease the parking brake.
CAUTION
Failure to place the shift button in N
(Neutral) when being towed with the
front wheels on the ground can cause
internal damage to the transmission.
Emergency Towing
If towing is necessary, we recommend
you have it done by an authorized
HYUNDAI dealer or a commercial tow
truck service.

Maintenance
8-52
Instrument panel fuse panel
Fuse Name (A)Circuit Protected
S/HEATER (FRT) 25A Front Seat Warmer Control Module, Front Air Ventilation Seat
Control Module
TRUNK 10AICU Junction Block (Trunk Lid Relay)
DOOR LOCK 20AICU Junction Block (Door Lock Relay,
Door Unlock Relay, Two Turn Unlock Relay)
MODULE1 7.5A Key Solenoid
MODULE3 10ADriver Door Module, Passenger Seat Relax Unit,
Hazard Switch, Crash Pad Switch (Up),
Front Mood Lamp Unit, Start/stop Button Switch,
Driver/Passeger Smart Key Outside Handle
S/HEATER (RR) 25A Rear Seat Warmer Control Module
P/SEAT (PASS) 30APassenger Seat Manual Switch, Passenger Seat Relax Unit
MODULE6 10ADriver Door Module
SAFETY
P/WINDOW (RH) 30APassenger Safety Power Window Module,
Rear Power Window Switch RH
P/SEAT (DRV) 30ADirver Seat Manual Switch, Driver IMS Module
IBU1 15A IBU, Driver/Passenger Door NFC Module, IAU,
BLE Unit, Ignition Switch
AMP 25A AMP, DC-DC Converter (AMP)
SAFETY
P/WINDOW (LH) 30ADriver Safety Power Window Module,
Rear Power Window Switch LH
BRAKE SWITCH 10AIBU, Stop Lamp Switch
SUNROOF2 20APanorama Sunroof, Data Link Connector
AIR BAG2 10ASRS Contorl Module
AIR BAG1 15A SRS Contorl Module, Passenger Occupant Detection Sensor
E-SHIFTER1 10ASCU, Electronic ATM Shift Lever
MEMORY 10ADriver IMS Module, Security Indicator, A/C Switch,
Driver/Passenger Power Outside Mirror,
A/C Control Module, Instrument Cluster,
Rain Sensor, Head-Up Display

Maintenance
8-56
Engine compartment fuse panel
Fuse Name (A)Circuit Protected
FUSE HEATED
MIRROR 10ADriver/Passenger Power Outside Mirror, A/C Switch,
A/C Control Module, ECM
ECU5 10A[G4FN] ECM
AMS 10ABattery Sensor
FUEL PUMP 1 20AE/R Junction Block (Fuel Pump Relay)
A/C 2 10AA/C Control Module
B+4 60AICU Junction Block (Long Term Load Latch Relay,
Fuse - MODULE3, AIR BAG2, E-SHIFTER1, SUNROOF1,
SUNROOF2, S/HEATER (FRT), TRUNK, BRAKE SWITCH,
DOOR LOCK)

08
8-63
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 washers,
make sure to maintain sufficient
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 operate normally.
• Do not bring the nozzle tip close to
boots (rubber or plastic covers) or
connectors as they may be damaged
if they come into contact with high
pressure water.
• Do not use any high-pressure nozzles,
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
thoroughly with lukewarm or cold water.
Do not allow soap to dry on the finish.
WARNING
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.
NOTICE
• 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 interior.
• To prevent damage to the plastic
parts, do not clean with chemical
solvents or strong detergents.
appEaranCE CarE

Index
I-2
A
Air bag warning labels

........................................................................\
................. 3-57
Air bags
........................................................................\
........................................ 3-37
Driver’s air bag
........................................................................\
....................... 3-39
Passenger’s front air bag


........................................................................\
......... 3-39
Side air bags


........................................................................\
............................ 3-40
Curtain air bags


........................................................................\
....................... 3-41
How does the air bags system operate?........................................................... 3-42
SRS components and functions


....................................................................... 3-42
SRS warning light
........................................................................\
................... 3-43
What to expect after an air bag inflates


...........................................................3-46
Occupant Classification System (OCS)
.......................................................... 3-47
Why didn’

t my air bag go off in a collision

....................................................3-52
Air bag collision sensors


........................................................................\
......... 3-53
Air bag inflation conditions


........................................................................\
.... 3-54
Air bag non-inflation conditions


..................................................................... 3-54
SRS Care
........................................................................\
................................. 3-56
Additional safety precautions


........................................................................\
.. 3-57
Air bag warning labels


........................................................................\
............ 3-57
Air cleaner


........................................................................\
................................... 8-26
Air cleaner filter replacement


........................................................................\
...... 8-26
Air conditioning system specification


................................................................. 2-10
Antenna
........................................................................\
...................................... 5-152
Anti-lock Brake System (ABS)


........................................................................\
... 6-27
Appearance care........................................................................\
........................... 8-63 Exterior care


........................................................................\
............................ 8-63
Interior care


........................................................................\
............................. 8-67
Armrest
........................................................................\
........................................ 3-11
Audio / Video / Navigation system
.................................................................... 5-154
Auto defogging system
........................................................................\
.............. 5-141
AUT

O headlamp position

........................................................................\
............ 5-74
Auto LOCK - Enable on shift


........................................................................\
...... 5-34
Auto LOCK - Enable on speed


........................................................................\
.... 5-34
Auto UNLOCK - Enable on shift
........................................................................\
5-34
Auto UNLOCK -Air bag deployment

................................................................. 5-34
Automatic climate control system


..................................................................... 5-127
Automatic heating and air conditioning


........................................................5-128
Manual temperature control mode


................................................................ 5-129