Some items need to be reset after the battery has been discharged or the battery has been disconnected. See chapter 3 for:
Hyundai Sonata LF 2014-2019 Service Manual: AVN Remote Controller Components and Components Location
Components
1. Left Remote Control Switch (Audio + Hands free)2. Right Remote Control Switch(Cruise+Trip Computer)
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Hyundai Sonata LF 2014-2019 Service Manual: Repair procedures
General Inspection
After or before servicing the EPS system, perform the
troubleshooting and test procedure as follows. Compare the system
condition with normal condition in the table below and if abnormal
symptom is detected, perform necessary remedy and inspection.
Test conditionNormal ...