No related codes.
So both keys emitting and car receiving are working.
Something is weird in-between.

Say today i take key 1 for a drive. First none of keys opens the car remotely, sync procedure not working.
I start the car with key 1. When turning the car off and removing from neiman, this key will work to open remotely and sync procedure works. Only for this key, not key 2.
Tomorrow I'll come back to the car, no keys are working, back to beginning...

I really don't get the logic behind that behavior.

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E53 - 2005 3.0dA