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Yes true, although I think that applies to the brake light? If you have the AHM3+ OR AHM4 this module uses 2 12v feeds, one from fuse 31 and one from fuse 32, as bmw increased this to two power feeds Ito these modules compared with the original 1 power feed in the AHM3. This was to cater for trailers that had extended lighting and drew extra power.
IF YOU HAVE THE AHM3+ OR AHM4 it could be erroring as it is expecting 2 12v feeds to the module?
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