I took the gauge, receipt and card to the dealer. Mentioned a low
battery and things. Not sure if they heard everything I said. The
guy at the parts counter opened up another package, took out the
gauge, noted my customer # from the receipt (which was from their old
system), took the bad gauge, and off I went.
The card (from the sales pack) did say that if the unit doesn't read
properly, send it to the factory for free replacement.