Kia Optima: Automatic Transaxle OperationThe optional automatic transaxle is electronically controlled.

All normal forward driving is done with the shift lever in the D (Drive) position.
To move the shift lever from the P (Park) position, the ignition switch must be in the ON position, the brake pedal must be depressed and the lock release button must be depressed.
For smooth operation, depress the brake pedal when shifting from N (Neutral) to a forward or reverse gear.
WARNING - Automatic Transaxle
Before leaving the driver’s seat, always make sure the shift lever is in the P (PARK) position; then set the parking brake fully and shut the engine off. Unexpected and sudden vehicle movement can occur if these precautions are not followed in the order identified.
✽ NOTICE
Transaxle RangesDescription
Body control module receives various input switch signals controlling time and alarm
functions for the intermittent wiper timer, washer timer, rear defogger timer, seat
belts warning, central ...
Replacement
1.
Disconnect the battery negative
cable from the battery and then wait for at least 30 seconds.
2.
Turn the steering wheel so that
the front wheels can face straight ...
Troubleshooting
Trouble Symptom Charts
Trouble Symptom 1
Trouble Symptom 2
Trouble symptom
Probable cause
Remedy
The set vehicle speed varies greatly ...