Kia Optima: Releasing the parking brake
Foot type
To release the parking brake, depress the parking brake pedal a second time while applying the foot brake. The pedal will automatically extend to the fully released position.

Hand type
To release the parking brake, first apply the foot brake and pull up the parking brake lever slightly. Secondly depress the release button (1) and lower the parking brake lever (2) while holding the button.
If the parking brake does not release or does not release all the way, have the system checked by an authorized Kia dealer.
WARNING

Check the brake warning light by turning the ignition switch ON (do not start the engine). This light will illuminate when the parking brake is applied with the ignition switch in the START or ON position.
Before driving, be sure the parking brake is fully released and the brake warning light is off.
If the brake warning light remains on after the parking brake is released while the engine is running, there may be a malfunction in the brake system. Immediate attention is necessary.
If at all possible, stop driving the vehicle immediately. If that is not possible, use extreme caution while operating the vehicle and only continue to drive the vehicle until you can reach a safe location or repair shop.
Applying the parking brake
Anti-lock brake system (ABS)Air Intake Control Switch
This is used to select fresh outside air or recirculation of the inside air.
WARNING
Continued climate control system operation in the recirculated air position
may allow humidity to incr ...
Removal
1.
Disconnect the negative(-) battery
terminal.
2.
Remove the lower (A) after loosening
the mounting screws.(Refer to the BD group - "Crash pad")
...
Components and Components Location
Components Location
1. Fuel Tank
2. Fuel Pump
3. Fuel Filter
4. Fuel Pressure Regulator
5. Canister
6. Fuel Tank Air Filter
7. Fuel Tank Band
8. Fuel Tank ...