Where is the Audi A4 Body Control Module Located?

[VonJayden]

For older models, it is located under the driver's footwell, while for newer models, it is on the right side of the trunk. Below is relevant information: 1. Definition of the control module: The automotive engine control module is the core component of engine control. Based on input from various sensors, it controls fuel injection and ignition timing, and provides optimal control commands to other output devices. 2. Fault detection: Additionally, the ECM detects faults in itself, various sensors and actuators, serial data lines, and the malfunction indicator lamp (MIL) circuit. When a fault is detected, the ECM records the corresponding fault code and takes appropriate measures. 3. Replacement: The engine control calibration program is stored in an electrically erasable programmable read-only memory (EEPROM), which is a permanent memory soldered onto the ECM and cannot be replaced separately.