BIG KUDOS to Walmart Automotive in Portland Texas. I had my tires rotated during my last oil change, by a Ford dealer. The van is equipped with a tire pressure monitoring system sensor on each valve stem. Anyhow, my rear tires looked low the next day so I checked pressures, 70 psi front 49 psi rear. They forgot to adjust pressures and reset monitors. When I adjusted to 49 front and 70 rear the tire warning light came on. To reset them requires a lot of button pushing and air hose time so I asked Walmart if I could use their hose and explained why. The service guy said he had an easier way to do it, a little hand held computer. He just touched each valve stem with it until the vans horn chirped. After he did the final one my on dash screen showed "tires retrained." They said no charge and to stop by anytime I had the same issue. I tipped the Tech $20. Great people here in Texas.