Maybe it just needs a new airbag. I've got a brown steering wheel airbag from a 1996 e320. Have a whole 96 e320 parts car that may have many parts you need. If you can't find anything local pm me. I'll give you a good deal.

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What Would Rudolph Do?
1975 300D, 1975 240D, 1985 300SD, 1997 300D, 2005 E320 , 2006 Toyota Prius