Originally Posted By: leeharvey418
I've never seen a TPMS sensor with a replaceable battery. Not saying they're not out there in some application, but they're certainly not the norm.
Given that the current sensors are about at what would be the expected service life, I'd just replace them, corrosion or not. Yeah, you might get another five years out of them, but compared to a lot of sensors out there, you're already living on borrowed time.
According to Tire Rack, you're going to need the plug-in tool to let the car learn the new sensors. Anybody who sells the sensors should be able to do it for you, but be sure to ask first. As others have mentioned, I'd absolutely trust Costco to know what they're doing with a sensor installation.
The ford stem style, 9L3Z-1A189-A use a CR2032 type battery (not sure the number exactly but that style), but they are pretty much in there forever. I was playing with an old one trying to see if I could get it out, but you have to destroy the case to get the battery out. Would be nice if someone had thought ahead and made the batteries replaceable, but the they couldn't sell a $100 every few years.
