stratman

Hello all,


Last night I noticed that the triangle on the rear view mirrors (both) was not active. Then it came on and went off again a short time later. Probably a loose wire and hopefully that is all it is. Has anyone had this occur and, if so, is this a dealer only fix item or does anyone know how to trace the wiring for this? This car is mostly a black box to me as I can't find a factory manual for it. Kind of frustrating because I'm used to doing at least some of the work on my own cars.

zcct04

Triangle only lights up when you are:
1. Traveling more than X mph (20?) AND
2. have somebody in your blind spot

For owners manual, try the link below. For shop manual, I think you are SOL.
http://www.mbusa.com/mercedes/servic...owners_manuals

Edit - I think it's ALWAYS on when you're going slower than the trigger speed. Once above the trigger speed, it turns off unless there's someone in your blind spot.

rediesel

^^ Your edit is correct under ~15MPH it is illuminated yellow constant.

jcfay

Actually, in my 2014 the light is dark <20mph, then yellow if >20mph and nothing in blind spot. If >20mph and something in blind spot then red, and if your turn signal is on then it beeps and flashes IIRC.

odonnks

I'm pretty sure your <>'s are reversed.
Below or < 20 mph the indicator is yellow and over or >20 mph it's off unless a vehicle is in your blind spot at which time it's red.

jcfay

oops, yup, my mistake. Good thing I don't drive based on my writing! thanks

sack5000

That's the thing, look for cars rather than lights.

jcfay

yup, definitely do that too, but the blind spot warning is pretty awesome, IMO. The blind spot in the C63 is pretty significant, even with your mirrors set correctly, and so I think it's a huge help. Still gotta be aware, of course, but I think much of the tech is a big safety bonus and help.