Hyundai Sonata: Remote keyless entry - Features of your vehicleHyundai Sonata: Remote keyless entry

Battery replacement
A smart key battery should last for several years, but if the smart key is not working properly, try replacing the battery with a new one. If you are unsure how to use your smart key or replace ...

Remote keyless entry system operations
Lock (1) All doors are locked if the lock button is pressed. If all doors, trunk and hood are closed, the hazard warning lights will blink once to indicate that all doors are locked. Also, i ...

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Engine coolant
The high-pressure cooling system has a reservoir filled with year-round antifreeze coolant. The reservoir is filled at the factory. Check the antifreeze protection and coolant level at least once ...

Heated Oxygen Sensor (HO2S). Schematic Diagrams
Circuit Diagram ...

Battery. Description and Operation
Description 1. The maintenance-free battery is, as the name implies, totally maintenance free and has no removable battery cell caps. 2. W ...