My first time using this site. I have a 2016 Mazda CX-5. No matter what I do to set the clock, it constantly runs 15 minutes fast. Try to outsmart it by setting it 15 minutes early, thinking it will advance to correct setting, but still reverts to running 15 minutes fast. Turned on the GPS sync function, didn't make a difference. We don't have the navigation system. When it first started doing this, it was setting itself to about 7-8 minutes fast, now it has settled in at a steady 15 minutes ahead. Kind of annoying. Anyone else experience this? Thanks.