At least one of the sensors on my 2010 Corolla is acting squirrelly, causing the light to come on even though all the tire pressures are normal. Since they are all about 10 years old I plan to replace them all. Any suggestions for a good (and reasonably priced) local (Winston-Salem area) source for this? I see the sensors for sale online for as little as $100 for four, but then there is installation, and getting the sensors to talk to the TPMS system, which make this not a DIY job, at least not for me.