Not sure what model year that came from but the'01 has no power to the brake filament of the top lamp so cannot do the extra light trick.

I rewired my brakes lights to always use all four but only could do this because I have a replacement set of tail lights. (made in 09 I think).

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2011 E70 • N55 (me)
2012 E70 • N63 (wife)