One of my tires goes flat after a week. Before they told me that TPMS and valve was cracked, which they replaced and the tire still goes flat. What could be the reason? Also how to make this TPMS light go away?
Thanks

I got 2008 civic ex

 

if there's a slow leak it can be difficult pinpoint. a good trick is to pour very soapy water on the tire then look for tiny bubbles forming. it works better if you remove the tire and even better if you have a large enough container to completely submerge in water.