Hello all, first post here!

My '99 C280 started misbehaving today. My blinkers, wipers, horn, and rear defrost will no longer activate. This happened - likely not unrelated - after I was tinkering with fuses under the hood trying to sort out my other intermittent issue with the central locking and windows going out with no discernible rhyme or reason. The kicker is that my warning flashers still work fine.

So, two questions:

1. I deduce that either: A.) there are two relays, one for individual blinking and one for hazard flashers, B.) there are two separate fuses for hazards and individual blinking, and I messed one up, or C.) the wiper/blinker stalk gave out at a very convenient time but none of this had to do with poking around the fuse box.

2. This is much less important to me, but my windows (usually front driver, sometimes both front), and occasionally sunroof motors decide to stop working. This usually but not always is correlated with either poor remote unlock range or total failure of remote unlock. It happens in all seasons and all humidities, and with no other correlations I can figure out. It seems totally random. Any ideas?

As a side note, I have looked extensively on the blinker/wiper issues and it seems older W202s (per-1998?) had a "multifunction relay" that would cause similar symptoms. Reseating this or resoldering the internal components seemed to be a fix in those years, but my relays look different than what is described. Did something change?

EDIT: I reseated all relays. There is no "N10" relay, I confirmed. This was, in the older W202s, a combination relay that would be the obvious culprit given my symptoms. Instead there are quite a few different relays (see images below).