Let's try to focus on one thing at a time for clarity and educational purposes.
Code:
Address 17: Instruments Labels: 7L6-920-xxx-7L6.lbl
Part No SW: 7L6 920 890 K HW: 7L6 920 890 K
Component: J285 KOMBI-INST. 9733
Revision: KHH06V02
Coding: 0007101
Shop #: WSC 54173 003 1048576
VCID: 408FBC7913A4158F8F-8014
1 Fault Found:
00446 - Function Limitation due to Under-Voltage
002 - Lower Limit Exceeded - Intermittent
Freeze Frame:
Fault Status: 00100010
Fault Priority: 6
Fault Frequency: 55
Reset counter: 132
Mileage: 148458 km
Time Indication: 0
Date: 2022.04.05
Time: 10:09:58
We will start with this one, as it appears to be the most significant. (I'm also not liking the HVAC one, but let's see)
So, you've had the BEM step in and cut off circuits 55 times thus far, since the date\odo shown.
It will reset on its own after another 132 ignition cycles if the conditions don't happen again.
Please see if you can extract the history file as per post #15, as that should give us additional useful information.
Does the parasitic draw issue seem to coincide with your horn replacement or any other known maintenance or fault?