I realize the years of the vehicles are different, but you may find some useful info on the page listed below. If nothing else it may give you info to do some further research on and then come up with your own answer. I have found not any one of these forums has given me the answer, it was by gleening a bit from many that I found the answers to mine and I listed them on the page listed below along with much useful info.
My Power Drive Light does not stay on. Only when engaged for use does it light up to let you know it is on. It is not something you use all the time, so you may want to find out if it is stuck/engaged all the time and if it will harm the vehicle in any way. Call around to some mechanics and go out of area also. I find some of the best answers come from small independent shops and the only thing I ask a dealer is for parts identification and fluids and such. I learned early on that dealers have an expression of "Trust Me", and when I hear anyone say that I instinctively know not to trust them. Had a family member who used to be a car dealer and I would not trust a dealer as far as they can be lifted.
I hope yours is nothing like what I went through, if so, you may have a head start by reading what is offered and doing some of your own research. Best of luck to you and if not happy if it turns out the dealer lied to you, then there is recourse with a dealer selling a vehicle with a known problem in some situations. Start with your Attorney General's Office and explain it to them, but first try to work it out with the dealer as this is what will be asked of you anyway.
You have to follow protocol in these matters. They A.G.'s Off. have consumer help for some problems. There is the BBB.com to report them. There is also the State Dealer Licensing board to file a complaint with the state with. Do your homework first to be sure it is or is not supposed to stay on. For mine it was not and meant the alternator was going and in the process took out other items as well as that is how engineers make things work today in relay or sucession, etc.