I bought the Pilot used about 3-5 months ago. I noticed the rear passenger TPMS was saying it was low. No problem, I added air and all seemed fine. for a week or so. Then the same wheel said it's low again. I did manual check with gauge,and it was low. So I added air again. Happened again. I brought to local dealer (non-honda) who I trust, and they said the tire had a pin hole, which they plugged. After a week or so the leak was back. So I just had both rear tires replaced yesterday, since they were on the way out anyway. Well, TPMS is still saying that same wheel is about 7-8 lbs. lower than the other 3. A manual air gauge check says they are all exactly the same psi. So question is what is going on with that one sensor?. The tire is new, but the TPMS reading is off. How do I avoid spending mucho $$$ at the dealer, and does anyone have any idea what the issue might be? Thanks so much. This forum is excellent!