Hi all... long time lurker, finally posting.
We've owned a 2007 Edge SEL (everything but the Nav - mostly an around town vehicle, have an iPhone for directions) since March 2007. Ever since taking delivery, we've had an intermittent problem, which I've never seen addressed here. I just received some new info from my dealer, so I thought I'd share!
Seemingly at random, the vehicle would deliver a Tire Pressure Sensor Fault warning. It happened during road trips, it happened around town. Nothing seemed to be amiss with the tires or their pressure. The in-town dealer told us that it was the same as a Low Tire Pressure warning, but I didn't buy it (nor would I have bought anything else from them, especially the Edge!).
We had made our dealer aware of this right away, and it has been looked at by three dealers. No one had an answer, and I never saw a TSB on this.
Thankfully, during scheduled service this week, we were able to deliver the vehicle with the Tire Pressure Sensor Fault active. They connected it the the diagnostic computer, and were able to at least get an error code: B2872/B287A. The Symptom Code Information on this error indicates that certain cell phone chargers or similar devices may interfere with the wireless connection between the tire sensors and the TPM system receiver. They specifically call out model MOTMINIVPC, a Motorola charger. We have a similar charger in the vehicle but rarely have it plugged in. However, we do permanently keep a Belkin plug-in charger with audio-out in the console power point with a mini-stereo cable plugged in to the AUX jack for our iPods and my iPhone.
Ford recommends that the dealer have us provide the charging device and the discharged cell phone so they can perform a road test and try to replicate the issue. Since this struck me and my dealer service manager as silly, we're keeping an eye out for this ourselves. Also, if this is the extent of the problem, I'm just not likely to worry about this issue at all any more. Since most wireless set-ups like this TPM system and plug-in electrical devices are likely to 1) cause interference and 2) are required to accept interference, there's not much I can do about it!
Anyway, this outlines a problem we were having, and a possible explanation. I hope anyone else searching for info on this issue finds this helpful! Drive on!