general problems of the 2013 Toyota Highlander

The door open alert and alert beeping came on as well as all of the interior lighting as I was driving. It shows glass door on the display. I checked all doors and none of the doors are open. It was very distracting and dangerous to be driving at night on the highway with all interior lights on. They keep going on and off and the alert keeps beeping. As far as I can find out, there is no way to turn off the interior lights. My car is out of warranty by 300 miles. I just had it in for the 35,000 mile service. I find numerous accounts of this known issue on several websites/discussion forums. I called Toyota and was informed there is no recall however I found there was a TSB? sent out on the back latches. I called jim norton Toyota in tulsa, ok and was informed they want a $110 diagnostic fee to see what the issue is. Seems like with all of the same issues that Toyota would look into this issue and resolve. Toyota said they could not waive the diagnostic fee. Hoping I can find a quick fix or someone willing to resolve this issue inexpensively or better yet, Toyota could step up and resolve the issue themselves as a customer service stand.