The location of the electronic transmission control unit (AT ECU) may vary depending on the make and model of the vehicle.
General locations of the automatic transmission ECU:
* Under the hood in the engine compartment, usually next to the automatic transmission or on the mudguard.
*In the car interior under the dashboard.
*In the trunk or under the back seat.
To determine the exact location of the automatic transmission ECU in a particular vehicle, you can refer to the operating manual or technical documentation.