no heat on passenger side only.
brand new 2008 TL.
it wodul not just be a fuse or something easy?
anyone knwo what fuse for the passenger side heat?
just cold air blows no mater what settings.
talking the reg heat from vents, not seat heat.
it's both the dash & floor vents blowing cold on passenger side only.

 

Not certain on the 08 models, but on the earlier 3G TL's you can pull the trouble codes up manually by :
Ignition on
Press & hold the off button. While holding the off button, press the recirculation button 5 times within 10 sec. Release the off button and self diagnostic will begin.
If any problems, the temp indicator will light up the segment A-S corresponding to the error. The temp indicator will alternate every second between displaying 88 (all segments lit) and error code segment A-S. If code present there is a list of the trouble codes.
To stop, just turn ignition off.

As it is a new vehicle, just return it to the dealer and let them do the repair.