it might be just one of the bulbs in your cluster. Do a search in this forum on cluster removal or cluster bulbs to get info on what you will need to do to get the cluster out. You will also need the cluster removal tools, these can be found on eBay for about $20 US.
Good luck
__________________ 2001 W208 Black Opal Metallic
K2a, K3, K4 + COMAND, HID halo projector headlights, flat hood emblem, chrome cluster rings, Bluetooth phone adapter, MB illuminated door sills, AMG steering wheel, AMG pedals, chrome AMG II dual spoke wheels, Nitto NT 555 Extreme Performance, 235/35/19 front, 265/30/19 rear
2004 W211 Platinum Blue Metallic
Premium Package, Apperance Package, Keyless Go, Bluetooth puck and tail
After following someone's suggestion that I "make" some hook tools from a coat hanger and fighting with the cluster for half and hour, I gave up and asked my mechanic to remove it. He did so just like that (snap) and left it loose for me to remove and find the lamps that needed replacing.
There's a bunch of them back there and my temp. display was one that needed replacing also. The lamps from the dealer are inexpensive and very easy to replace. I pulled the two plugs from the back (also very easy to do) and took the whole instrument cluster into the parts counter.
Upon reinstalling the cluster, I added a bit of lube to the points (two top, two Bottom) where the cluster is pressed in - rubber on the cluster and metal spring clips inside the hole.
Perhaps a friendly fellow at the dealer will snap out the cluster for you. The rest is easy.
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