Hyundai Sonata: Opening the trunk

• To open the trunk, press the trunk unlock button for more than 1 second on the transmitter (or smart key), press the button on the trunk handle with the smart key in your possession, or insert the master key (or mechanical key of the smart key) into the lock and turn it clockwise.

• To open the trunk from inside the vehicle, press the trunk lid release button. Once the trunk is opened and then closed, the trunk is locked automatically.
✽ NOTICE
In cold and wet climates, door locks and door mechanisms may not work properly due to freezing conditions.
WARNING
The trunk swing upward. Make sure no objects or people are near the rear of the vehicle when opening the trunk.
CAUTION
Make certain that you close the trunk before driving your vehicle. Possible damage may occur to the trunk lift cylinders and attached hardware if the trunk is not closed prior to driving.
Trunk
...
Closing the trunk
To close the trunk, lower the trunk lid, then press down on it until it locks.
To be sure the trunk lid is securely fastened, always check by trying to pull it
up again.
WARNING
The trunk lid sh ...
See also:
Radiator. Repair procedures
Removal and Installation
1.
Disconnect the battery terminals.
(Refer to Engine and transaxle assembly in this group)
2.
Remove the air ...
For best battery service
Keep the battery securely mounted.
Keep the battery top clean and dry.
Keep the terminals and connections clean, tight, and coated with petroleum
jelly or terminal grease.
Rinse any sp ...
Repair procedures
Inspection
Self Diagnosis With GDS
Smart key system defects can be quickly diagnosed with the GDS. GDS operates
actuator quickly to monitor, input/output value and self diagnosis.
The f ...
