Although this article is specific for Mondeo Mk3 (2000-2007), the issue may be actual for other Ford and Mazda models with xenone headlamps.
Thanks to Marcin Tomalak who found the solution and sent us the photos. Also thanks to unknown guys from Ford Club Polska who gave us the hint where to search.
Mondeo Mk3 vehicles equipped with xenone headlamps (High Intensity Discharge headlamps, HID) have auto-leveling system that requires special calibration procedure in case of HID components replacement or repair. In fact, the owner needs it every time when the LHID module (main HID module, placed in the left headlamp block) throws DTC B2477 and B2626.
The calibration procedure was one of the first service functions implemented in FORScan, however we got a lot of complaints from users who claimed it doesn't work. In the meantime, we were sure the procedure works OK as some other users were able to perform the calibration. Finally, it was found out that the procedure fails if the auto-leveling sensor is not set to zero level position. Normall, when vehicle is on level ground, the sensor has to be in the zero. If it is not so, the calibration procedure will fail.
Some photos that illustrate this:
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