The Smart Cruise Control System may have limits to its ability to detect distance to the vehicle ahead due to road and traffic conditions.
Hyundai Sonata LF 2014-2019 Service Manual: Repair procedures
Replacement
1.
Disconnect the negative (-) battery terminal.
2.
Remove the crash pad lower panel.
(Refer to Body - "Crash Pad")
3.
Remove the steering column upper & Lower shroud.
4.
Remove the ignition switch (A) and disconnecting the Key Warning / immobilizer connector.
5.
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Hyundai Sonata LF 2014-2019 Service Manual: Lift And Support Points
General Information
When heavy rear components such as suspension, fuel tank,
spare tire, tailgate and trunk lid are to be removed, place additional
weight in the luggage area before hoisting. When substatial weight is
removed from the rear of the vehicle, the center o ...