Whats that bulb for ?

[m3f_RAWM3EVO]

There is a bulb on the M3 speedo cluster ... just below the 170mph indicator what does it show when illuminated ?



Anyone know !!

[m3f_M3Blurr]

I have heard and am probably wrong but it maybe some sort of sensor that signals if the odometer has been tampered with. Anyone?

[m3f_Sirius]

Its a light sensor for the milage reading. As bright light shines on it, the milage reading gets brighter. Try it with a flashlight.



Same thing for the climate control on the digital version.

[m3f_Dan I Am]

Its a light sensor for the milage reading. As bright light shines on it, the milage reading gets brighter. Try it with a flashlight.



Same thing for the climate control on the digital version.

Those Germans thought of everything didn't they?

[m3f_RAWM3EVO]

light sensor !! are you sure ... I have a spare cluster I took apart and it looks like a bulb .. but I will try it.

[m3f_Sirius]

Yes, I am sure.. unless the evo's are different. Use the flashlight from your glovebox.

[m3f_orijinal_poser]

wow, i've also wondered what the hell that was. how'd you figure that out, sirius?

[m3f_95blkbimm3r]

how about searching previous threads before asking? i think this is the 3rd or 4th time ive seen this question posted



thanks

[m3f_RAWM3EVO]

Sorry, but I did a quick search but unless you put a good pattern match it isnt easy to find.