Your vehicle speed can be reduced due to a vehicle in the adjacent lane.
Apply the accelerator pedal and select the appropriate set speed. Check to be sure that the road conditions permit safe operation of the Smart Cruise Control.
Hyundai Sonata LF 2014-2019 Service Manual: Engine Room Under Cover Repair procedures
Removal and Installation
1.
Loosen the mounting clip and bolt and then remove the under cover (A).
Tightening torque:
7.8 ~ 11.7N.m (0.8 ~1.2kgf.m, 5.7 ~ 8.6 lb-ft)
2.
Install in the reverse order of removal. ...
Hyundai Sonata LF 2014-2019 Service Manual: ETC (Electronic Throttle Control) System Troubleshooting
Fail-Safe Mode
ItemFail-SafeETC MotorThrottle valve stuck at 7°TPSTPS 1 faultECM looks at TPS2TPS 2 faultECM looks at TPS1TPS 1,2 faultThrottle valve stuck at 7°APSAPS 1 faultECM looks at APS 2APS 2 faultECM looks at APS 1APS 1,2 faultEngine idle state
When throttle v ...