Yeah, we had to replace the system in our suburban at ~200,000 miles because we uses it all the time during the winter. It was less than $500. But I would rather pay that than lose a loved one to slippery roads. Matter of fact my wife rolled our 2000 GMC because she didn't turn it on. The road was dry and all of the sudden it turned to ice. We had a freak rain storm at below freezing temps on the pass she had to cross over to get home. I firmly believe if she had had it on she wouldn't have lost control.