This is related to the blower motor issue somehow.What happens when you remove or check a fuse or relay to make a key not work and how is it fixed? Does the key need to be taken to a dealer to be reset or can it be fixed by the owner somehow.I'm used to dealing with old school technology(pre-computers and electronics)so any help is appreciated so I don't have to take it to a dealer.Sorry to sound ignorant but this is pissing me off !!!

 

Do any of your keys work? If so, you can get the non-working one relearned. If none of them work, I think you have to go to the dealer.

 

I got the key issue resolved this morning. Just had to insert the "working key" in and turn on the engine. "Then turn the engine off and within 5 seconds put in the "non-working" key and turn to "run" but don't start the engine. After 5 seconds the key should be reprogrammed. Worked 1 st try !!! The info was listed under PASSKEY III in the owners manual. Now,back to the issue of no A/C. I did look at the cabin filter closer and it looks as if it's never been changed. At least not for quite awhile. It is stained like you said.