small amber light under int. rear view mirror
Super Member
Joined: Oct 2009
Posts: 887
Likes: 6
From: Northern New Jersey
2010 GLK Black, Premium 1, Lighting, Multimedia, Appearance and Media Pkg, 2012 Corvette Grand Sport
Your answer is in post #16 of this thread from almost 3 years ago. 
Unless they changed it in newer MY's the answer is right under your nose.
Unless they changed it in newer MY's the answer is right under your nose.
Senior Member
Joined: Nov 2002
Posts: 334
Likes: 10
From: Northern California
2016 GLE300d 4Matic
Just to add my .02 This is one of those nice extra touches. A tiny light so you're not fumbling in the dark for something, It's not bright enough to mess up your night vision but bright enough to see something set down or find a knob etc. It's officially an ambient light just like the little lights on the inside door handle or in the coin holder. If your trying to separate keys or some similar items you can hold it close to get more light without blasting the cabin with light.
When someone asks about the extra touches in a Mercedes - I point to the small light and then the triple blink turn signal bump.
Now if only more manufacturers did this
When someone asks about the extra touches in a Mercedes - I point to the small light and then the triple blink turn signal bump.
Now if only more manufacturers did this
Super Member
Joined: Oct 2009
Posts: 887
Likes: 6
From: Northern New Jersey
2010 GLK Black, Premium 1, Lighting, Multimedia, Appearance and Media Pkg, 2012 Corvette Grand Sport
If you have two lights on the rear view mirror # 3 and 5 buttons still control the "reading" lamps left and right. The single lamp shown in the picture circled in red is the amber light just like above but now stands alone.
Hope that takes the mystery out. Maybe now we can let this thread rest in peace. Happy New Year to all!!!
Super Member
Joined: Oct 2009
Posts: 887
Likes: 6
From: Northern New Jersey
2010 GLK Black, Premium 1, Lighting, Multimedia, Appearance and Media Pkg, 2012 Corvette Grand Sport
OK. There are two "reading" lamps listed as # 6 on the picture. There are two LED's on the bottom of the rear view mirror. One is in the red circle in the picture that is the one that is always lit. The other LED only lights when you use one of the three buttons used to open garage doors or similar radio operated devices. Does that clear it up for you?
Newbie
Joined: Jun 2017
Posts: 3
Likes: 0
From: london
Merceded CLC 220
orange light under rear view mirror
My merc 220 CLC has orange light under rear view mirror. I have just noticed it as it seems to be on all the time and my mechanic is curious as to why it is on all the time as may be problem if battery lowish...may put too much drain on battery over time. Does anyone know how to disable this light?
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Newbie
Joined: Apr 2022
Posts: 2
Likes: 0
2013 GLK 350
Makes more sense than every other reply I read.
I wish our DMV in US would consider adopting this option to punish bad drivers.
I wish our DMV in US would consider adopting this option to punish bad drivers.
It is part of a laser tag system use to identify bad driving. If you have a yellow light you got your first tag. love to know what it is for but I like this answer.
The cap on the dash covers a laser sensor this is a leftover from the German automobile manufactures safety council program to improve safety by taking cars away from drivers that demonstrate poor driving skills. The theory is bad driving often causes accidents while not actually being involved in it. In Europe if you do something dumb other drivers can send your auto a signal by laser. If you receive 5 tags in a year’s time you receive a fine, in 3 years if you have 8 or more the German auto manufactures will not sell you a new car. If you have 12 your driver license could be revoked. I think it still works in here. You can check your status at night by putting your hand under the rear view mirror if there is no colored light you’re good, but if it is light yellow all the way to bright red you got tagged for doing something stupid.
The cap on the dash covers a laser sensor this is a leftover from the German automobile manufactures safety council program to improve safety by taking cars away from drivers that demonstrate poor driving skills. The theory is bad driving often causes accidents while not actually being involved in it. In Europe if you do something dumb other drivers can send your auto a signal by laser. If you receive 5 tags in a year’s time you receive a fine, in 3 years if you have 8 or more the German auto manufactures will not sell you a new car. If you have 12 your driver license could be revoked. I think it still works in here. You can check your status at night by putting your hand under the rear view mirror if there is no colored light you’re good, but if it is light yellow all the way to bright red you got tagged for doing something stupid.
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Joined: Jun 2021
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From: New Hampsha
'17 GLS450, '14 GLK250, Grandpa's Roadster
Just like getting canceled on Twitter! (Be careful what you wish for... "There's that person who started the tagging business; let's tag her!")
