From what I remember from my reasearches - the control modules in wheelarches are basically ballasts+igniters and those also are responsible for auto levelling (translating the physical levelling signals to commands for levelling motors). Replacing it with the same part number may work BUT it will need Vida+Dice to calibrate and program those in. Im alcmost sure I read about people doing it DYI for V50 having only spare part from scrapyard and Vida laptop (no software needed for download). But if its not something you have access to or abilities/will to play around with, main dealer is your only option. I can only imagine it will be a good $$$ though :/
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