Hyundai Elantra: Dual Clutch Transmission Control System / Description and operation
The Dual Clutch Transmission (DCT) control system measures required data to identify the state of the control target and computes the appropriate compensation value if adjustment is necessary. The actuator is controlled according to the computed compensation value to obtain desired output.
If transmission or driving-performance-related failure is detected, first perform self-diagnosis and basic transmission inspection (oil check).
Then use the diagnostic tool to inspect the transmission control system components.

Description and operation
Description•
Function
The Transmission Control Module (TCM) is like the brain for the Dual Clutch Transmission (DCT)...
Other information:
Function malfunction
When Lane Following Assist is not
working properly, the ‘Check Lane
Following Assist (LFA) system’ warning
message will appear on the cluster. If this
occurs, we recommend that the function
be inspected by an authorized HYUNDAI
dealer...
The Hill-Start Assist Control (HAC)
helps prevent the vehicle from rolling
backwards when starting a vehicle from
a stop on a hill. The system operates the
brakes automatically for approximately
2 seconds and releases the brake after 2
seconds or when the accelerator pedal is
depressed...