Mercedes Repair Questions? Ask a Mechanic for Answers ASAP
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On most models there is a back light bulb that burns out in the cluster that causes this to go dark.The instrument cluster is removed and on the back side the bulb is removed and replaced to correct this here.The bulb is cheap and usually has to come from a dealer or service facility that works on these and takes less then a half hour to replace.I have had to replace several of these bulbs for this exact fault here.
The only other thing that can be at fault here as this also occurs is that little led display burns out on some and needs replaced instead of the bulb but usually it is the back lit bulb that needs replaced.
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