Hyundai Sonata Hybrid 2021 Owner's Manual page 412

Emergency situations
7. Press the 12V Battery Reset switch.
8. Start the engine of the assisting
vehicle and let it run for a few
minutes.
9. Start your vehicle as soon as
possible. 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 your vehicle will not start after a few
attempts, it probably requires servicing.
In this event please seek qualified
assistance. If the cause of your battery
discharging is not apparent, have your
vehicle checked by an authorized
HYUNDAI dealer.
Disconnect the jumper cables in the
exact reverse order you connected them:
1. Disconnect the jumper cable from the
black, negative (-) chassis ground of
your vehicle (4).
2. Disconnect the other end of the
jumper cable from the black, negative
(-) battery/chassis ground of the
assisting vehicle (3).
3. Disconnect the second jumper cable
from the red, positive (+) battery/
jumper terminal of the assisting
vehicle (2).
4. Disconnect the other end of the
jumper cable from the red, positive (+)
jumper terminal of your vehicle (1).
7-6
The voltage range of the charger should be
13.3~14V and its current range should be
less than 60A. (13.8V is recommended).
• The use of an improper charger
with a voltage and current range
higher than specified may cause
overheating and damage to the 12V
ODN8HQ019028
battery.
• The use of an incorrect charger will
lead to a power shut-off to save the
12V battery. Stop using the incorrect
charger once the power of the
vehicle is shut off.
NOTICE
To prevent damage to your vehicle:
• Only use a 12-volt power supply
(battery or jumper system) to jump
start your vehicle.
• Do not attempt to jump start your
vehicle by push-starting.
Do not jump start another vehicle
with your hybrid vehicle. Jump starting
another vehicle will damage the
hybrid vehicle's 12 volt battery (lithium
polymer type).
Information
CAUTION
Information
An inappropriately disposed
battery can be harmful to
the environment and human
health. Dispose of the battery
according to your local law(s) or
regulations.
CAUTION