Hyundai Sonata: Smart Key / Loss of a smart key
A maximum of two Smart Keys can be registered to a single vehicle. If you happen to lose your smart key, you should immediately take the vehicle and remaining keys to your authorized HYUNDAI dealer or tow the vehicle, if necessary.
Mechanical key
If the Smart Key does not operate normally, you can lock or unlock the door by
using the mechanical key.
Press and hold the release button (1) and remove the mechanical key (2). Insert
the mechanic ...
Smart key precautions
The smart key will 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 tran ...
Other information:
Hyundai Sonata LF 2014-2019 Service Manual: Components and Components Location
Components
1. Cowl side trim2. Front pillar trim3. Front door scuff trim4. Front door step trim5. Center pillar upper trim6. Center pillar lower trim 7. Rear door scuff trim8. Rear door step trim9. Rear pillar trim
...
Hyundai Sonata LF 2014-2019 Service Manual: Power Door Mirror Actuator Repair procedures
Inspection
1.
Disconnect the negative (-) battery terminal.
2.
Remove the front door quadrant inner cover (A).
3.
Disconnect the power door mirror connector from the harness.
4.
Apply battery voltage to each terminal as shown in the table and verify that the mirror operates properly. ...
