If any method other than the CRUISE toggle switch was used to cancel cruising speed and the system is still activated, the cruising speed will automatically resume when you push the toggle switch up (RES+) or down (SET-).
If you push the toggle switch up (RES+), the speed will resume to the recently set speed. However, if vehicle speed has dropped below approximately 20 mph (30 km/h), it will resume when there is a vehicle in front of your vehicle.
CAUTION
Always check the road conditions when you push the toggle switch up (RES+) to resume speed.
Hyundai Sonata LF 2014-2019 Owners Manual: Radar to Detect Distance to the Vehicle Ahead
The Smart Cruise Control uses a radar to detect distance to the vehicle ahead.
Radar check message
If the radar or cover is dirty or obscured with foreign matter such as snow,
this message will appear. In this case, the system may not function temporarily,
but it does not indicate a malfunction ...
Hyundai Sonata LF 2014-2019 Service Manual: Seat Belt Pretensioner (BPT) Repair procedures
Removal
1.
Disconnect the battery negative cable, and wait for at least three minutes before beginning work.
2.
Remove the door scuff trim.
(Refer to Body - "Interior Trim")
3.
Remove the center pillar trim.
(Refer to Body - "Interior Trim")
4.
Loosen the seat belt pretensioner m ...