CVT UOA taken before Honda HR-V transmission failure

[michael007]

2016 Honda HR-V CVT failed @ 114k miles.

The transmission fluid was replaced every ~10k miles

When the transmission failed, the fill plug was missing.

A sample was taken during a drain and fill, about a month or two before the failure.

Thought it's interesting the TAN is more than x4 of the TAN of a HCF-2 VOA.

Informative post from @MolaKule from the HCF-2 VOA thread:

VOA: https://bobistheoilguy.com/forums/threads/honda-hcf-2-cvt-fluid-voa.346538/

 

[atikovi]

When the transmission failed, the fill plug was missing.

Sounds like it was ran low on fluid or dirt entered the open fill plug causing the failure.

 

[michael007]

Sounds like it was ran low on fluid or dirt entered the open fill plug causing the failure.

I agree but the big question is what causes the fill plug to pop out?

According to the Honda TSB, the cause of the fill plug popping out is because the breather plug is blocked.

If CVT fluid has a high TAN, will it cause more fumes which will increase the chance of the breather plug becoming clogged?

The fill plug was regularly checked and the breather plug was regularly cleaned to prevent this problem but I guess I wasn't doing it often enough.......

More info about the Honda TSB:
https://bobistheoilguy.com/forums/threads/honda-cvt-transmission.367290/post-6447077

 

[atikovi]

Are you buying a new Honda transmission? Does anyone rebuild them?

 

[michael007]

Are you buying a new Honda transmission? Does anyone rebuild them?

This isn't Honda's first rodeo. Dealer replaced it for free and I only had to pay for the rental.