2012 Jeep Wrangler: New TPMS Sensors Installed
January 22, 2012
What's right with this picture? The TPMS fault lamp is no longer glowing on the instrument panel of our 2012 Jeep Wrangler Sport.
I brought the Jeep and Mike's sack full of five sensors to a Just Tires store I pass every day on the 405 freeway while motoring through Carson, CA on my way home.
These TPMS sensors are of the simpler rubber-stemmed variety and they pop into the rim just like any regular rubber valve stem would. Our BFG tires not need be fully dismounted from the rim to make the swap; a broken outboard bead gives the tech enough room to reach in there.
"How much to install these?" I asked William, the friendly guy behind the counter.
"Three dollars and fifty cents apiece," said he.
I'll do the math for you: that's $17.50 for all five. Pretty cheap.
But the sensors do add a little weight where there was nothing before, so I had them rebalance the tires. That brought the total up to $104.85 -- just slightly over $20 per tire for everything. Necessary? Perhaps not, but I didn't want to have to come back.
And it is a lifetime balance -- the tire's lifetime, anyway. That could come in handy later on with big off-road tires like these.
Many TPMS systems require new sensors to be formally introduced to the vehicle's ECU with a special tool that plugs into the OBD port. But a 2012 Jeep learns the ID numbers of new sensors by merely driving for 10 minutes (or less) at a speed of 20 mph (or more).
Apparently "or less" is the operative phrase. The technician's test drive lasted no more than a mile before the lamp winked out.
Dan Edmunds, Director of Vehicle Testing @ 7,826 miles