| Description |
| • |
Monitors the vehicle's operating conditions to determine the optimal gear setting. |
| • |
Performs a gear change if the current gear setting differs from the identified optimal gear setting. |
| • |
Determines the need for Damper Clutch (D/C) activation and engages the clutch accordingly. |
| • |
Calculates the optimal line pressure level by constantly monitoring the torque level and adjusts the pressure accordingly. |
| • |
Diagnoses the automatic transaxle for faults and failures. |

Repair procedures
Transaxle Control Module (TCM) Schematic DiagramsHyundai Elantra AD (2016-2020) Owners Manual: Automatic Climate Control System
1. Driver's temperature control knob
2. Front windshield defrost button
3. Rear window defrost button
4. Fan speed control knob
5. Air intake control button
6. Passenger's temperature control knob
7. AUTO (automatic control) button
8. OFF button
9. Air conditioning button
10. Mode ...
Hyundai Elantra AD (2016-2020) Owners Manual: Parking Brake
Checking the Parking Brake
Check the stroke of the parking brake by counting the number of "clicks" heard
while fully applying it from the released position. Also, the parking brake alone
should securely hold the vehicle on a fairly steep grade. If the stroke is more
or less than ...