2015 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. If the smart key is not working
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 position.
3. Install the battery cover in the reverse order of removal.
OYF049004
OYF049212
OBH048004

753
Maintenance
✽
✽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
OYFH044150/OYFH071079N/OYFH071080N/OYFH071081N/OYFH071082N/OYFH071083N/OYFH071084N
High mounted stop light
replacement
1. Push the cushion up.
2. Disconnect the seat warmer cable islocated under the cushion.
3. Remove the nuts under the seatback connecting each seatback.
4. Push the seatback up. The seat back is connected to the hook attached to
package tray.
5. Remove the C pillar.
WARNING
When you replace the high mount-
ed stop light replacement, be care-
ful not to touch or damage the high
voltage battery. Touching or damag-
ing the high voltage battery may
result in electric shock or burns.

I5
Index
FluidBrakes fluid ··················\
··················\
·········· ·7-27
Washer fluid ··················\
··················\
·········· ·7-28
Front passenger and rear seat 3-point system with combination locking retractor ··················\
········3-19
Front seat adjustment ··················\
··················\
·····3-4
Fuel filler lid··················\
··················\
··············4-22
Fuel gauge ··················\
··················\
··············· ·4-43
Fuel requirements ··················\
··················\
·········1-3
Fuse/relay panel description ··················\
·············7-55
Fuses ··················\
··················\
··················\
···· ·7-51
Engine compartment fuse ··················\
·············7-53
Fuse/relay panel description ··················\
··········7-55
Instrument panel fuse ··················\
················· ·7-52
Memory fuse ··················\
··················\
········· ·7-52
Multi fuse ··················\
··················\
··············7-54
Gauge Engine temperature gauge ··················\
············4-42
Fuel gauge ··················\
··················\
············ ·4-43
Glass antenna ··················\
··················\
·········· ·4-125
Glove box ··················\
··················\
···············4-119 Hazard warning flasher
··················\
··················\
·4-70
Hazardous driving conditions ··················\
············5-30
Headlight bulb replacement ··················\
··············7-62
Headrest ··················\
··················\
············ ·3-7, 3-11
High voltage battery ··················\
··················\
···· ·7-80
Highway driving ··················\
··················\
·········5-33
Hill-start assist control (HAC) ··················\
···········5-22
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
Sonata hev energy flow ··················\
··········H4, 4-45
State of charge (SOC) ··················\
··················\
·H3
The air intake of hybrid battery ··················\
······H12
The componets of hybrid vehicle ··················\
······H7
The ECO GUIDE gauge ··················\
············· ·4-43
The ECO level ··················\
··················\
·· ·H2, 4-47
The EV

MODE ··················\
··················\
······ ·4-53
The READY indicator ··················\
················ ·4-41
The service indicator ··················\
··················\
·4-53
Hybrid electric vehicle ··················\
··················\
· ·4-45
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