Craiglxviii
Senior Member
- Joined
- Sep 6, 2015
- Messages
- 17,781
- Reaction score
- 7,426
- Location
- Cambs UK
- Your Mercedes
- 970 Panamera Turbo; W221 S500L AMG Line, C215 CL500, W251 R350L AMG Line, plus several more now gone
The IR window closing/opening. I've had it on other cars that work through an RF system. IR is just pointless to the point I don't use it at all.
Wipers, namely automatic wipers. I've had them on my previous Alfa 159 and this. I used to complain bitterly about what a waste of time they were on the Alfa as they had their own mind. Sometimes they'd wipe when there was no need and then not when there was.
This MB seems worse. I think in both cases it has to do with how clean the screen is to start with. The MB has a very marked screen (stone chips etc) and the wipers although not worn seem to smear. So when I switch the wipers on they just wipe continuously until I get annoyed and turn them off. Effectively there is no intermittent.
There are three small cracks in the windscreen two of which have occurred since I bought it. I need them fixing or ideally a new windscreen which might make a difference. New wiper blades also on order.
Lastly the wiper switch itself. I can't see what it is set on because the steering wheel spoke covers it. This is only and issue when I start the car because once I'm moving due to the problem mentioned they just wipe anyway after a minute or so I find myself twisting my head at daft angles trying to see past it.
Auto wipers are dramatically affected by a putted windscreen. The system relies on light scattering (raindrops being optically coupled to the glass). If there is putting the system may read that as raindrops. Or it may struggle to discriminate raindrops due to excess optical white noise so not activate.