2022 HYUNDAI SONATA HYBRID battery replacement

Convenient Features
5-10
Smart key precautions
The smart key may not work if any of the
following occur:
• The smart key is close to a radio
transmitter such as a radio station or
an airport which can interfere with
normal operation of the transmitter.
• The smart key is near a mobile two
way radio system or a cellular phone.
• Another vehicle’s smart key is being
operated close to your vehicle.
If the smart key does not work correctly,
open and close the door with the
mechanical key. If you have a problem
with the smart key, contact an authorized
HYUNDAI dealer.
If the smart key is in close proximity to
your mobile phone, the signal could be
blocked by your mobile phone’s normal
operational signals. This is specifically
relevant when the phone is active such
as making and receiving calls, text
messaging, and/or sending/receiving
emails. When possible, avoid keeping the
smart key and your mobile phone in the
same location such as a pants or jacket
pocket in order to avoid interference
between the two devices.
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
interference, and
2. This device must accept any
interference 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 device.
NOTICE
Keep the smart key away from
electromagnetic materials that blocks
electromagnetic waves to the key
surface.
NOTICE
Always have the smart key with you
when leaving the vehicle. If the smart
key is left near the vehicle, the vehicle
battery may be discharged.
Battery replacement
OFE048009
ODN8059266
If the Smart Key is not working properly,
try replacing the battery with a new one.

05
5-77
Turn signals and lane change signals
ODN8A059207
To signal a turn, push down on the lever
for a left turn or up for a right turn in
position (A).
If an indicator stays on and does not flash
or if it flashes abnormally, one of the turn
signal bulbs may be burned out and will
require replacement.
One touch turn signal function
To activate the One Touch Turn Signal
function, push the turn signal lever up or
down to position (B) and then release it.
The lane change signals will blink 3, 5 or
7 times.
You can activate or deactivate the One
Touch Turn Signal function or choose
the number of blinks (3, 5, or 7) from the
User Settings mode in the LCD display.
Battery saver function
The purpose of this feature is to prevent
the battery from being discharged.
The system automatically turns off the
parking lamp when the driver turns the
vehicle off and opens the driver-side
door.
With this feature, the parking lamps will
turn off automatically if the driver parks
on the side of road at night.
If necessary, to keep the lamps on when
the vehicle is turned off, perform the
following:
(1) Open the driver-side door.
(2) Turn the parking lamps OFF and ON
again using the headlamp switch on
the steering column.
Headlamp delay function
If you place the ignition switch in the
ACC or OFF position with the headlamps
ON, the headlamps (and/or position
lamps) remain on for about 5 minutes.
However, with the engine off if the
driver’s door is opened and closed, the
headlamps (and/or position lamps) are
turned off after 15 seconds.
The headlamps (and/or position lamps)
can be turned off by pressing the lock
button on the remote key or smart key
twice or turning the light switch to the
OFF or AUTO position. However, if you
turn the light switch to the AUTO position
when it is dark outside, the headlamps
will not be turned off.

07
7-3
If You Have a Flat Tire While
Driving
If a tire goes flat while you are driving:
• Take your foot off the accelerator
pedal and let the vehicle slow down
while driving straight ahead. Do not
apply the brakes immediately or
attempt to pull off the road as this
may cause loss of vehicle control
resulting in an accident. When the
vehicle has slowed to such a speed
that it is safe to do so, brake carefully
and pull off the road. Drive off the
road as far as possible and park on
firm, level ground. If you are on a
divided highway, do not park in the
median area between the two traffic
lanes.
• When the vehicle is stopped, press the
hazard warning flasher button, shift
the gear to P (Park), apply the parking
brake, and press the Engine Start/Stop
button to the OFF position.
• Have all passengers get out of the
vehicle. Be sure they all get out on the
side of the vehicle that is away from
traffic.
• When changing a flat tire, follow the
instructions provided later in this
chapter.
IF THE ENGINE WILL NOT
S TA RT
• Be sure to shift the gear to P (Park).
The vehicle starts only when the gear
is in P (Park).
• This vehicle does not have a regular
12V battery that needs periodic
replacement. It is lithium ion polymer
type integrated into the HEV high
voltage battery. The vehicle has a
12V battery protection system that
cuts 12V battery from vehicle draw
to prevent full discharge. If vehicle
will not start, first try pressing the
12V Battery Reset switch (left side of
the steering wheel near the fuel door
open switch) to reconnect the 12V
battery, but you must start vehicle
within 15 seconds of pressing the 12V
Battery Reset switch. After starting
the vehicle (
indicator ON ),
operate the vehicle safely outdoors in
ready mode stopped and/or drive it
for 30 minutes total to charge the 12V
battery fully.
• Check the fuel level and add fuel if
necessary.
If the vehicle still does not start, call
an authorized HYUNDAI dealer for
assistance.
NOTICE
Push or pull starting the vehicle may
cause the catalytic converter to
overload which can lead to damage to
the emission control system.

Emergency situations
7-4
Before Jump Starting
This vehicle does not have a regular 12V
battery that needs periodic replacement.
It is lithium ion polymer type integrated
into the HEV high voltage battery. The
vehicle has a 12V battery protection
system that cuts 12V battery from vehicle
draw to prevent full discharge.
Using the 12V battery reset switch
ODN8HQ019028
1. Press the 12V Battery Reset switch to
reconnect the 12V battery.
2. Start the vehicle within 15 seconds of
pressing the 12V Battery Reset switch.
3. After starting the vehicle
( indicator on), operate the vehicle
safely outdoors in ready mode
stopped and/or drive it for 30 minutes
total to charge the 12V battery fully. If you do not start the vehicle
immediately after pressing the 12V
Battery Reset switch, the power of 12V
battery is automatically disconnected
after few seconds to save the 12V battery
from additional discharge. If the 12V
battery is disconnected prior to starting
the vehicle, press the 12V Battery Reset
switch again and then immediately start
the vehicle as explained.
Repeated use of the 12V Battery Reset
switch without a sufficient engine
ON cycle (30 Min+) may cause over
discharge of the 12V battery, which will
prevent the vehicle from starting. If the
12V battery is over discharged to a point
that the reset does not work, try to jump-
start the vehicle.
Information
After starting the vehicle
( indicator on), the 12V battery is being
charged whether the engine is running or
not. Although there is no engine sound, it
is unnecessary to depress the accelerator
pedal.
The following items may need to be reset
after the battery has been discharged or
the battery has been disconnected.
See chapter 4 and 5 for:
• Power Windows
• Trip Computer
• Climate Control System
• Clock
• Audio System
• Sunroof
IF THE 12 VOLT BATTERY IS DISCHARGED

Maintenance
8-38
■ Blade type
■
Cartridge type
■
Multi fuse Normal
Blown
Normal Blown
Normal Blown
Normal Blown
OLF074075
A vehicle’s electrical system is protected
from electrical overload damage by
fuses.
This vehicle has 2 (or 3) fuse panels, one
located in the driver’s side panel bolster,
the other in the engine compartment.
If any of your vehicle’s lights,
accessories, or controls do not work,
check the appropriate circuit fuse. If a
fuse has blown, the element inside the
fuse will be melted or broken.
If the electrical system does not work,
first check the driver’s side fuse panel.
Before replacing a blown fuse, turn the
engine and all switches off, and then
disconnect the negative battery cable.
Always replace a blown fuse with one of
the same rating.
If the replacement fuse blows, this
indicates an electrical problem.
Avoid using the system involved and
immediately consult an authorized
HYUNDAI dealer.
Information
Three kinds of fuses are used: blade type
for lower amperage rating, cartridge
type, and multi fuse for higher amperage
ratings.
FUSES

08
8-47
ODN8089051L
Back-up lamp (Bulb type)
1. Disconnect the negative battery
cable.
2. Remove the side under cover.
3. Remove the socket from the
assembly by turning the socket
counterclockwise until the tabs on
the socket align with the slots onthe
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. Insert a new bulb by inserting it into
the socket and rotating it until it locks
into place.
6. Install the socket into the assembly by
aligning the tabs on the socket with
the slots in the assembly. Push the
socket into theassembly and turn the
socket clockwise.
7. Reinstall the lamp assembly to the
body of the vehicle.
High Mounted Stop Lamp
Replacement
ODN8089030
If the LED lamp (1) does not operate,
have the system checked by an
authorized HYUNDAI dealer.
The LED lamps cannot be replaced as
a single unit because it is an integrated
unit. The LED lamps has to be replaced
with the unit.
A skilled technician should check or
repair the LED lamp, for it may damage
related parts of the vehicle.

Index
I-6
E
Electric Power Steering (EPS)
........................................................................\
....5-38
Electronic Stability Control (ESC)
.....................................................................6-28
Emergency towing
........................................................................\
......................7-28
Emergency trunk safety release
........................................................................\
..5-64
Emission control system
........................................................................\
.............8-57
Crankcase emission control system
...............................................................8-57
Evaporative emission control System
............................................................8-57
Exhaust emission control system
...................................................................8-58
Energy flow
........................................................................\
.................................1-20
Engine only propulsion
........................................................................\
..........1-20
EV propulsion
........................................................................\
........................1-20
Power assist
........................................................................\
.............................1-20
Vehicle stop
........................................................................\
............................1-20
Engine brake ........................................................................\
............................ 1-21
Engine generation ........................................................................\
.................... 1-21
Power reserve
........................................................................\
..........................1-21
Regeneration
........................................................................\
..........................1-21
Engine brake/regeneration
........................................................................\
.....1-22
Engine generation/motor drive
........................................................................\
1-22
Engine generation/regeneration
.....................................................................1-22
Start engine to avoid battery discharge
..........................................................1-22
Engine compartment
........................................................................\
.....................2-6
Engine compartment panel fuse replacement
.....................................................8-40
Engine coolant
........................................................................\
............................8-17
Engine number
........................................................................\
............................2-14
Engine oil
........................................................................\
....................................8-15
Engine specification ........................................................................\
....................... 2-7
Engine Start/Stop button
........................................................................\
................6-6
Event Data Recorder (EDR)
........................................................................\
..........1-8
Explanation of scheduled maintenance items
.....................................................8-13

Index
I-16
Seats ........................................................................\
..............................................3-3
Safety precautions
........................................................................\
....................3-4
Front seat adjustment
........................................................................\
...............3-5
Rear seat adjustment
........................................................................\
..............3-10
Head restraints
........................................................................\
........................3-11
Front seat warmers
........................................................................\
.................3-15
Side curtain
........................................................................\
................................5-125
Side view mirrors
........................................................................\
........................5-49
Smart Cruise Control (SCC)
........................................................................\
.......6-87
Smart key
........................................................................\
......................................5-5
Locking
........................................................................\
....................................5-5
Unlocking
........................................................................\
.................................5-7
Trunk opening
........................................................................\
..........................5-8
Mechanical key
........................................................................\
........................5-9
Battery replacement
........................................................................\
...............5-10
Smooth cornering
........................................................................\
.....................6-133
Snow tires
........................................................................\
.................................6-135
Spare tire
........................................................................\
.....................................7-14
Special driving conditions
........................................................................\
.........6-132
Hazardous driving conditions
......................................................................6-132
Rocking the vehicle
........................................................................\
..............6-132
Smooth cornering
........................................................................\
.................6-133
Driving at night
........................................................................\
....................6-133
Driving in the rain
........................................................................\
................6-133
Driving in flooded areas
........................................................................\
.......6-134
Highway driving ........................................................................\
.................... 6-134
Speedometer
........................................................................\
.................................4-5
Steering wheel
........................................................................\
............................5-38
Electric Power Steering (EPS)
.......................................................................5-38
Tilt steering / Telescope steering
....................................................................5-39
Heated steering wheel
........................................................................\
............5-40
Horn ........................................................................\
......................................... 5-41
Steering wheel audio control
........................................................................\
.....5-127
Storage compartment
........................................................................\
................5-118
Center console storage
........................................................................\
.........5-118
Glove box
........................................................................\
.............................5-118
Sunvisor
........................................................................\
....................................5-120
Surround View Monitor (SVM)
........................................................................\
..5-86