Kia Optima: Cruise ControlThe cruise control system allows you to program the vehicle to maintain a constant speed without resting your foot on the accelerator pedal.
With cruise control, you can set and automatically maintain any speed of more than about 25 mph (40 km/h).
WARNING - Cruise Control
Do not use the cruise control feature under the following conditions:
To set cruise control speed:

1. Push in the cruise control main switch. This turns the system on.
2. Accelerate to desired cruising speed above 25 mph (40 km/h).

3. Push the “COAST/SET” control switch and release it. The "CRUISE" indicator light in the instrument cluster will illuminate after you have set the vehicle speed at the desired speed.
4. Remove your foot from the accelerator pedal and the desired speed will automatically be maintained.
5. To increase speed, temporarily depress the accelerator pedal enough for the vehicle to exceed the preset speed. When you remove your foot from the accelerator pedal, the vehicle will return to the speed you have set.
To cancel the cruise speed
Do one of the following:
Power Steering
To Resume the Preset SpeedDisassembly
1.
Disconnect the negative (-) battery
terminal.
2.
Remove the front tire (A) from
hub assembly.
Tightening torque :
10~15N.m (9~11kgf.m, 7.37~11lbf.ft ...
Lumbar Support (Driver’s Seat Only)
You can adjust the lumbar support by moving the lever on the right side of the
driver’s seatback. Pivoting the lever toward the front of the vehicle increases
the lumbar support. Pivoting the ...
Owner maintenance precautions
Improper or incomplete service may
result in problems. This section gives
instructions only for the maintenance
items that are easy to perform.
As explained earlier in this section, several
p ...