Oh I'm sure it's just another play to MAKE us take them back to the dealer to get serviced/repaired. Just like the anti theft systems like PATS, worked fine for years, but once the tools come out for the owners to reasonability repair themselves they come up with this incode/outcode scheme. Not much more secure for the car owner, just more money for the dealer. I haven't looked into the new TPM systems but I doubt working on them is going to be cheaper than the systems in use today, especially since after market suppliers are now providing sensors for most cars. But with the new ones, it's back to the dealer again. They know they have the money to stay ahead of us.