Bumping an old thread just to say that this was very helpful. I recently had my Eibachs installed and been driving around with my headlights pointing way too high. After checking the rear sensor, sure enough it was re-installed incorrectly. If you can jack the rear of the car up high enough, you can do this job without taking the rear wheel off. It's easier to stick your hand in front of the rear wheel to get to the 10mm bolt. Simply undo this bolt from the camber brace, flip the sensor arm and swing arm assembly to the proper position (see picture in post above) and re-install bolt. Took me 10 mins. My headlights now cycle properly and I'm no longer blinding people and receiving honks.
Jerez Black/Fox E93 M3 - Prem 2/Cold/Conv/DCT/EDC/19's/Ext Lthr/Crbn Trim/Enhanced Sound/Sat
Mods- 20" BBS LM's DBK/Challenge Catback/Eibachs/Trim wrapped black/Lux Angel eyes/35% Tint