For your safety, the Dual clutch transmission has a shift lock system which prevents shifting the transaxle from P (Park) or N (Neutral) into R (Reverse) unless the brake pedal is depressed.
To shift the transaxle from P (Park) or N (Neutral) into R (Reverse):
1. Depress and hold the brake pedal.
2. Start the engine or turn the ignition switch to the ON position.
3. Move the shift lever.
If the brake pedal is repeatedly depressed and released with the shift lever in the P (Park) position, a chattering noise near the shift lever may be heard. This is a normal condition.
WARNING
Always fully depress the brake pedal before and while shifting out of the P (Park) position into another position to avoid inadvertent motion of the vehicle which could injure persons in or around the car.
Shift-lock override

If the shift lever cannot be moved from the P (Park) or N (Neutral) position into R (Reverse) position with the brake pedal depressed, continue depressing the brake, then do the following:
1. Press the shift-lock release button.
2. Move the shift lever.
3.We recommend that the system be inspected by an authorized Kia dealer.
Ignition key interlock system
The ignition key cannot be removed unless the shift lever is in the P (Park) position.
Paddle shifter
Good driving practicesKia Cee'd JD Service Manual: Input Speed Sensor 2 Repair procedures
Inspection
Refer to DTC code "P2765, P2766" Input Shaft Speed Sensor.
Removal
1.
Turn off the ignition switch and then disconnect the battery (-) cable.
2.
Remove the under cover.
3.
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Kia Cee'd JD Service Manual: Rear Disc Brake Components and components location
Components [Without EPB]
1. Guide rod bolt
2. Bleed screw
3. Caliper carrier
4. Caliper body
5. Brake pad
6. Pad retainer
Components [With EPB]
1. Guide rod bolt
2. Bleed screw
3. Caliper ...