Coolant Hoses

[350LX07]

Hello everyone,

I recently purchased a 2007 ES 350 with 69k miles. There's no indication, according to the carfax report  that the coolant hoses were ever replaced. I called several Lexus dealerships to find out if I need to be concerned about replacing them now, at 69k miles but none of them returned my call. It's interesting, I also called a Toyota dealership with the same question because Toyota manufacture Lexus automobiles. He told me that those hoses never need replacing. I said, I have never heard of that. Can anyone of you help me with this question, please? How often should they be replaced, including the by-pass hose? 

Thanks in advance!

[RX400h]

As far as I know, none of our hoses have been replaced. At some point in time, depending upon where you live and its weather conditions, hoses can last beyond 20 years. The general rule of thumb is that if you cannot squeeze and compress the hose, it probably needs to be replaced. Over time, plasticizers used to manufacture the hoses, diminish, causing the hoses to become harder and more prone to cracking/splitting.

[350LX07]

Wow, that's amazing. Thank you so much!!