ok after replacing my front air shocker that had a leak..on fixing it all back up together i now have adifferent error .. solid yellow light still dropped at the front.. the mmi display shows all greyed out on all levels even jacking mode is not a option.. i will recheck all connections..oddly i dont have the strong hissing noise which im normally hearing .. the pump is newish last year replaced.. it might need re leveling i guess... apart from dealer would anyone know of uk garages maybe even mobile...