Follow up.....Talked to local MB parts man and he said they have been replacing a lot of tank sending units for this year and model, two units per tank at $315 for one and almost $500 for the other plus labor. Also the OBVR will cost about $500 plus labor. Is there any place to get these parts at less cost but good quality? Do you recommend MB garage for this type repair or would a good independent be as good with less cost...Don't think I want to try this one myself ( two things I don't like to work around, electricity and raw fuel)......Desert