Headlight Aiming, 2016/7 GLC 300 and GLC43, NHTSA Recall #17V819 .
 

Just received subject recall letter advising certain 2016/17 GLCs and GL43s have headlights that may be erroneously aimed (too low).

Letter advises owners to return their vehicle to the dealer for headlight adjustment - at no charge.

Although the lights on my GLC seem fine am scheduling an appointment..

I saw this recall on MBUSA, and scheduled it along with some other things.
To me, the best part of getting this done was the description on the invoice for this recall item. Though I am in USA, the description was in German.

RECALL 20171200115, HEADLIGHT ADJUSTMENT
CAUSE:
022018 ARBEITEN; ELEKTRISCHE SICHERUNG AN STARTERVORSCHALTRELAIS NACHTRAEGLICH EINBAUEN VERR. - NR.: 15 900 38, CODE: 17WMB08 0.50
15099 CAMPAIGN RECALL HEADLIGHT ADJUSTMENT 20171200115

I just noticed this AFTER I got home and the service dept was closing up early today due to limited appts and service availability after our snowfall yesterday.
OK, so, I am competent in German and immediately recognized that the German text exactly describes the work that was done for the earlier recall 17V114 (An authorized Mercedes-Benz dealer will retrofit a fuse on the starting current limiter on the affected vehicles). I think I'll call up the service dept to verify what they did, but I am sure that they will not understand the German text in this service item from the invoice. I am not a mechanic, let alone a Mercedes mechanic, but I don't quite see the relationship between these items or why the work done for recall 17V114 shows up in the service notes for the headlight adjustment recall.

Weird.
My GLC43 beams are aimed correctly but my C450 beams were way too low. Both vehicles have ILS. I adjusted the C450 myself as it's pretty easy to do.

Didn't think there was anything wrong with my headlight adjustment but returned the vehicle in order to comply with the recall.

I'll be darned, after getting the vehicle back and driving at night, discovered there was noticeable improvement. At least in my case...valid recall.