2012 Hyundai Sonata Hybrid battery replacement

Features of your vehicle
64
Restrictions in handling keys
When leaving keys with parking lot and
valet attendants, the following proce-
dures will ensure that your vehicle’s trunk
and glove box compartment can only be
opened with the mechanical key.
Lock
Remove the mechanical key from the
smart key and leave the smart key with
the attendant. In this manner the smart
key can only be used to start the hybrid
system and operate door locks.
Trunk
1. Open the trunk lid.
2. Set the trunk lid control switch toLOCK position ( ).
3. Close the trunk lid.
Glove box
Lock the glove box using the mechanical
key.
Lock release
Trunk
1. Unlock doors by using the smart key and unlock the trunk lid with the
mechanical key.
2. Set the trunk lid control switch to UNLOCK ( ).
3. Close the trunk lid.
In this position the trunk will open with
the trunk lid release button or smart key.
Glove box
Unlock the glove box using the mechani-
cal key.
Battery replacement
A smart key battery should last for sever-
al years, but if the smart key is not work-
ing properly, try replacing the battery with
a new one. If you are unsure how to use
your smart key or replace the battery,
contact an authorized HYUNDAI dealer.
1. Insert a slim tool into the opening and gently pry open the rear cover of the
smart key.
2. Replace the battery with a new battery (CR2032). When replacing the battery,
make sure the battery positive “+” sym-
bol faces up as indicated in the illus-
tration.
3. Install the battery cover in the reverse order of removal.
OYF049004
OYF049212
OBH048004

Maintenance
52
7
✽
✽
NOTICE
• If the memory fuse is pulled up from
the fuse panel, the warning chime,
audio, clock and interior lamps, etc.,
will not operate. Some items must be
reset after replacement. Refer to
“Battery” in this section.
• Even though the memory fuse is pulled up, the battery can still be dis-
charged by operation of the head-
lights or other electrical devices.
Engine compartment fuse
replacement
1. Turn the engine start/stop button and
all other switches off.
2. Remove the fuse panel cover by pressing the tab and pulling up. 3. Check the removed fuse; replace it if it
is blown. To remove or insert the fuse,
use the fuse puller in the engine com-
partment fuse panel.
4. Push in a new fuse of the same rating, and make sure it fits tightly in the clips.
If it fits loosely, consult an authorized
HYUNDAI dealer.
OYFH071023N
CAUTION
After checking the fuse panel in theengine compartment, securelyinstall the fuse panel cover. If not, electrical failures may occur fromwater contact.

767
Maintenance
License plate light bulb replace-
ment
1. Loosen the retaining screws with aphilips head screwdriver.
2. Remove the soket by turning it connterclockwise.
3. Remove the bulb by pulling it straight out.
4. Install a new bulb.
5. Reinstall the bulb assembly securely with the retaining screws.
OYF079037L
WARNING
When you replace the high mount-
ed stop light replacement, be care-
ful not to damage to the high volt-
age battery. If not, it may result in
electric shock or burns.

Index
2I
Air bags··················\
··················\
··················\
··················\
··3-35Air bag warning label··················\
··················\
············3-62
Air bag warning light ··················\
··················\
············3-38
Curtain air bag··················\
··················\
··················\
·····3-53
Driver's and passenger's front air bag ··················\
·····3-48
Occupant classification system ··················\
···············3-42
Side impact air bag··················\
··················\
················3-52
SRS components and functions ··················\
··············3-39
Air cleaner ··················\
··················\
··················\
···············7-30
Antenna (glass) ··················\
··················\
··················\
······4-111
Anti-lock brake system (ABS) ··················\
··················\
··5-18
Appearance care··················\
··················\
··················\
·······7-69 Exterior care ··················\
··················\
··················\
········7-69
Interior care ··················\
··················\
··················\
·········7-73
Armrest ··················\
··················\
··················\
··················\
··3-13
Audio system ··················\
··················\
··················\
·········4-111 Glass antenna ··················\
··················\
··················\
·····4-111
Steering wheel audio control ··················\
·················4-111
Automatic climate control system (Type A)··················\
4-80 Air conditioning ··················\
··················\
··················\
··4-88
Climate control air filter··················\
··················\
········4-90
Economy air conditioning ··················\
··················\
·····4-87
Heating and air conditioning··················\
··················\
·4-81
Automatic climate control system (Type B)··················\
4-91 Air conditioning ··················\
··················\
··················\
··4-99
Automatic heating and air conditioning··················\
··4-92
Economy air conditioning ··················\
··················\
·····4-98 Manual heating and air conditioning ··················\
······4-93
Automatic transaxle ··················\
··················\
··················\
···5-9 Shift lock system ··················\
··················\
··················\
·5-12
Aux, USB and iPod port ··················\
··················\
··········4-110
Battery ··················\
··················\
··················\
··············7-34, 8-2
Battery saver function··················\
··················\
················4-69
Before driving ··················\
··················\
··················\
············5-3
Bottle holders, see cup holders ··················\
··················\
4-106
Brake system··················\
··················\
··················\
············5-14 Anti-lock brake system (ABS) ··················\
················5-18
Electronic stability control (ESC) ··················\
···········5-19
Hill-start assist control (HAC) ··················\
················5-22
Parking brake ··················\
··················\
··················\
······5-16
Power brakes ··················\
··················\
··················\
·······5-14
Brakes fluid··················\
··················\
··················\
··············7-27
Bulb replacement ··················\
··················\
··················\
·····7-60
Bulb wattage ··················\
··················\
··················\
·············8-3
Button start/stop, see engine start/stop button·················5-5
California perchlorate notice ··················\
··················\
·····7-78
Camera (Rear view) ··················\
··················\
··················\
·4-68
Capacities (Lubricants) ··················\
··················\
···············8-5
Capacity/Weight ·················\
··················\
··················\
·········8-2
A
B
C

I5
Index
GaugeEngine temperature gauge··················\
··················\
·····4-42
Fuel gauge ··················\
··················\
··················\
···········4-43
Glass antenna ··················\
··················\
··················\
·········4-111
Glove box··················\
··················\
··················\
···············4-105
Hazard warning flasher··················\
··················\
··············4-68
Hazardous driving conditions ··················\
··················\
····5-30
Headlight bulb replacement ··················\
··················\
·······7-60
Headrest ··················\
··················\
··················\
············3-7, 3-11
Highway driving ··················\
··················\
··················\
······5-33
Homelink mirror, see the Electric chromic mirror (ECM) with HomeLink system ··················\
··················\
·········4-31
Hood··················\
··················\
··················\
··················\
·······4-21
Horn ··················\
··················\
··················\
··················\
·······4-30
How to use this manual ··················\
··················\
···············1-2
Hybrid HMC Hybrid system··················\
··················\
················H2
State of charge (SOC) ··················\
··················\
··············H3
Sonata hev energy flow ··················\
··················\
··H4, 4-45
The componets of hybrid vehicle ··················\
··············H7
The air intake of hybrid battery ··················\
···············H12
The READY indicator··················\
··················\
···········4-41
The ECO level··················\
··················\
················H2, 4-47\
The EV MODE ··················\
··················\
··················\
···4-53 The service indicator ··················\
··················\
·············4-53
The ECO GUIDE ··················\
··················\
··················\
4-43
Hybrid electric vehicle··················\
··················\
···············4-45
Immobilizer system ··················\
··················\
··················\
···4-7
Indicator symbols on the instrument cluster ··················\
·1-7
Indicators and warnings ··················\
··················\
·············4-53
Inside rearview mirror ··················\
··················\
···············4-31
Instrument cluster ··················\
··················\
··················\
····4-40 Engine temperature gauge··················\
··················\
·····4-42
Fuel gauge ··················\
··················\
··················\
···········4-43
Hybrid electric vehicle ··················\
··················\
··········4-45
Instrument panel illumination ··················\
·················4-41\
Odometer ··················\
··················\
··················\
·············4-41
Speedometer ··················\
··················\
··················\
········4-42
Trip computer ··················\
··················\
··················\
······4-44
Warning and indicators ··················\
··················\
·········4-53
Instrument panel fuse··················\
··················\
·················7-51\
Instrument panel illumination··················\
··················\
····4-41
Instrument panel overview ··················\
··················\
··········2-3
Interior care··················\
··················\
··················\
··············7-73
Interior features··················\
··················\
··················\
······4-106 Aux, USB and iPod port ··················\
··················\
·····4-110
Clothes hanger··················\
··················\
··················\
···4-109
Cup holder ··················\
··················\
··················\
·········4-106
Digital clock ··················\
··················\
··················\
······4-108
Floor mat anchor(s) ··················\
··················\
·············4-109
G
I
H