The paddle shifter is available when the shift lever is in the D (Drive) position or the manual shift mode.
With the shift lever in the D position
The paddle shifter will operate when the vehicle speed is more than 6 mph (10 km/h).
Pull the [+] or [-] paddle shifter once to shift up or down one gear and the system changes from automatic mode to manual mode.
When the vehicle speed is lower than 6 mph (10 km/h), if you depress the accelerator pedal for more than 5 seconds or if you move the shift lever from Manual Shift Mode to D (Drive), the system changes from manual mode to automatic mode.
With the shift lever in the manual shift mode
Pull the [+] or [-] paddle shifter once to shift up or down one gear.
NOTICE
If the [+] and [-] paddle shifters are pulled at the same time, gear change may not occur.
Hyundai Elantra AD (2016-2020) Service Manual: Rear Combination Lamp Repair procedures
Removal
1.
Disconnect the negative (-) battery terminal.
2.
Remove the outside rear combination lamp assembly (B) after disconnecting the connector (A).
3.
Remove the bulb (A) after turning it in the counter clock-wise direction.
[LED Type]
[Bulb Type]
4.
Disconnect the inside rear ...
Hyundai Elantra AD (2016-2020) Service Manual: Fluid Components and Components Location
Components Location
1. Automatic transaxle2. Drain plug gasket3. Drain plug4. ATF level check plug5. ATF level check plug gasket6. ATF injection plug O-Ring7. ATF injection plug (Eyebolt)
...