Hyundai Elantra HD: To set cruise control speed
1. Push the CRUISE ON-OFF button on the steering wheel to turn the system on. The CRUISE indicator light in the instrument cluster will illuminate.
2. Accelerate to the desired speed, which must be more than 25 mph (40 km/h).
3. Push the COAST/SET switch, and release it at the desired speed.The SET indicator light in the instrument cluster will illuminate. Release the accelerator at the same time. The desired speed will automatically be maintained.
On a steep grade, the vehicle may momentarily slow down while going downhill.