I would like to change the LEDs on the exterior rear view mirrors from Yellow to White, could someone please teach me how?
I asked one of the technicians @ the mercedes service centre, and he told me that i could not change those individual LED light bulbs. He also told me that, i might have to take the whole unit out and replace the whole thing. Is that true?
Is there any way that i could get around it, and just change those LED lights?

try search the C-class forum. I believe someone has done it before.