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: Water pump Repair procedures
Removal
1.
Loosen the drain plug (A), and drain the engine coolant. Remove the radiator cap to drain with speed.
System is under high pressure when the engine is hot.To avoid
danger of releasing scalding engine coolant, remove the cap only when
the engine is cool.
...
Hyundai Sonata LF 2014-2019 Owners Manual: Scheduled Maintenance Services
Follow Normal Maintenance Schedule if the vehicle is usually operated where none
of the following conditions apply. If any of the following conditions apply, you
must follow the Maintenance Under Severe Usage Conditions.
Repeated short distance driving.
Driving in dusty conditions or sandy area ...
