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.
Hyundai Sonata LF 2014-2019 Service Manual: Repair procedures
Teaching Procedures
1.
Key Teaching Procedure
Key teaching must be done after replacing a defective PCM(ECM) or when providing additional keys to the vehicle owner.
The procedure starts with an PCM(ECM) request for vehicle
specific data (PIN code: 6digits) from the tester. The "virgin" PCM ...
Hyundai Sonata LF 2014-2019 Service Manual: Muffler Repair procedures
Removal and Installation
Front Muffler
1.
Disconnect the battery negative terminal.
2.
Disconnect the rear oxygen sensor connector (A).
3.
Remove the front muffler (A).
Tightening torque:
39.2 ~ 58.8 N.m (4.0 ~ 6.0 kgf.m, 28.9 ~ 43.4 lb-ft)
4.
Install in the reverse order of ...