The Volkswagen Jetta automatic transmission control unit is usually located in one of the following locations:
* Under the hood: In the engine compartment, near the battery or coolant expansion tank.
*Interior: Under the center console, next to the gear lever.
* Under the car: Under the front bumper, near the radiator and air conditioning condenser.
The exact location may vary depending on the year and model of Jetta. It is recommended that you refer to the repair manual for your specific Jetta model or consult a qualified mechanic to determine the exact location of the automatic transmission control module.