OK, I got the light switch replaced per recall, and apparently also needed a dash software update (#09-09079).
All easy-peasy but then I tried to reset the trip meter at the gas station. Prior to the software update, all I had to do was hold in the center button on the turn signal switch for a few seconds. Post-update this does nothing.
I call the shop and they say you have to hold the top switch on the cluster in while pressing the center button. Huh? Well, OK, it works.
Am I going nuts? Was I doing it wrong all along?
PS - after the software upgrade, the DTC was set to off and I did a nice big wheelie getting on the freeway. Good thing no CHPs nearby!