To resume cruising speed at more than approximately 25 mph (40 km/h)

If any method other than the CRUISE ONOFF switch was used to cancel cruising speed and the system is still activated, the most recent set speed will automatically resume when the RES/+ switch is pushed. It will not resume, however, if the vehicle speed has dropped below approximately 25 mph (40 km/h)
See also:
Changing the Climate Control Air Filter
The climate control air filter is located in front of the evaporator unit behind
the glove box.
It helps to decrease the amount of pollutants entering the car.
1. Open the glove box and remove t ...
SIX-SPEED AUTOMATIC AND MANUAL TRANSMISSIONS
Hyundai's commitment to making the Hyundai Sonata extremely fuel efficient
continues with a six-speed automatic transmission with SHIFTRONIC manual control
or a standard six-speed manual transaxle ...
Anti-Lock Brake System
The Anti-Lock Brake System (ABS) is designed to prevent wheel lock-up during
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