Thinking about ADV, the cafd must be the same for all cars, it's just the settings that vary. Therefore the variance is only in the connection type.
I expect those that can't see all 4 codes cannot do so because their coding setup doesn't support viewing all 4 codes.
I don't know about bimmercode, but the only 100% way I can guarantee that those codes are not trimmed, is to use esysx with latest psdzdata for your target istep, and a version of esysx that has mappings for that psdzdata version.
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