The headliners start to come down from using open windows, where the warm, humid air helps deteriorate the glue and foam. At some point you'll need to get it recovered. Shop around in the meantime for a good upholsterer, unless you want to tackle the job yourself.

If you have the owner's manual and warranty book, it shouold have the data card with all the original option codes. Otherwise, subscribe to EPC net, and you can get it (or ask the dealer).

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Prost!