Cannot find ECU for WDA

HI!


I've had my V8 for a week now. He's got a few flaws I'm about to eliminate. The WDA and the Infarot remote control did not work among others. Remote control femed the batteries. New ones in, but still doesn't work. So I went looking for the WDA ECU. The car is now almost completely disassembled, I found some ECU just that for the WDA not. Under the driver's side the amplifier for radio, the voltage converter Airbag and the GRA control unit were only under the driver's board. It's not under the back seat either - I only found the ABS control unit, the ZV pump and the bedding. Where else should I look??? But WDA must be installed, I have the contact switches in the doors and hoods, I have the horn in the trunk and the Inferot receivers are also connected to everything. What I haven't yet expanded is the center console. Only there I have seen so far only the airbag control unit and the amplifier for the instrument lighting.
If it's missing, there's gotta be loose plugs hanging around somewhere.

Would be grateful for every tip

Greetings Riccardo