Shift-lock system
For your safety, the Intelligent Variable Transmission (IVT) has a shift-lock system which prevents shifting the transmission from P (Park) into R (Reverse) unless the brake pedal is depressed.
To shift the transmission from P (Park) into R (Reverse):
1. Depress and hold the brake pedal.
2. Start the engine or place the ignition switch in the ON position.
3. Move the shift lever.
Shift-lock release

If the shift lever cannot be moved from the P (Park) position into R (Reverse) position with the brake pedal depressed, continue depressing the brake, and then do the following:
1. Place the ignition switch in the LOCK/OFF position.
2. Apply the parking brake.
3. Carefully remove the cap (1) covering the shift-lock release access hole.
4. Insert a tool (e.g. flathead screwdriver) into the access hole and press down on the tool.
5. Move the shift lever.
6. Remove the tool from the shiftlock override access hole then install the cap.
If you need to use the shift-lock release, have your vehicle inspected by an authorized HYUNDAI dealer immediately.
Transmission ranges
ParkingHyundai Elantra AD (2016-2020) Owners Manual: Engine Compartment
â– 1.6 T-GDI
â– 2.0 MPI
1. Engine oil filler cap
2. Engine oil dipstick
3. Brake/Clutch fluid reservoir
4. Positive battery terminal
5. Negative battery terminal
6. Fuse box
7. Air cleaner
8. Engine coolant reservoir
9. Windshield washer fluid reservoir
The actual engine compartment ...
Hyundai Elantra AD (2016-2020) Service Manual: Rear Package Tray Trim Components and Components Location
Component Location
1. Package tray trim
...