Is that comprehensive 3yr warranty or 6 yrs power train one? For me, mazda USA rep confirmed that it is under 3yrs/36k warranty but not in 6yrs one.My '17 serpentine tensioner was replaced a month ago while the dealer had it for other service. They noticed it. Under warranty.
A lot more discussions about belt tensioner here, especially for DIYers:Is that comprehensive 3yr warranty or 6 yrs power train one? For me, mazda USA rep confirmed that it is under 3yrs/36k warranty but not in 6yrs one.
I plan to get it fixed with oem parts online ($105+taxes&shipping for the tensioner) and I'll also get belts replaced at the same time. Non dealer installer may charge ~$150, so total would be around $300 while IIRC dealer quoted ~$470.
Yes, it’s leaking ⋯View attachment 233139 that's how leak is looking. I'll check the other thread mentioned above.
For me, it is 29.5k milesWhat mileage have you all been getting out of the stock tensioner before needing replacement in the Gen 2 CX-5's?
My CX-5 is gen 1 like yours and i changed the tensioner out at 29k miles.For me, it is 29.5k miles
This’s something I should do too with leaky belt tensioner at 42K miles. In fact, we all should do it if the tensioner is failing under 60K miles.⋯
Reporting to NHTSA.
I reported my failed LED daytime running light to NHTSA and encouraged others to do the same. Some made comments on the thread that we were petty for a bulb that cost <$20 when, in reality, the replacement was/is over $1,250 per light as it requires the replacement of the entire adaptive headlight assembly. It's now a NHTSA recall.This’s something I should do too with leaky belt tensioner at 42K miles. In fact, we all should do it if the tensioner is failing under 60K miles.
The belt tensioner TSB has been posted and discussed in every detail in another thread which is going on for a while with 324 posts and a lot of DIY information by Digbicks1234:I reported my failed LED daytime running light to NHTSA and encouraged others to do the same. Some made comments on the thread that we were petty for a bulb that cost <$20 when, in reality, the replacement was/is over $1,250 per light as it requires the replacement of the entire adaptive headlight assembly. It's now a NHTSA recall.
Mazda USA knows damn well when they have a problem and the tensioner is a well-known problem that I discovered with very little investigative effort both here and on-line: https://static.nhtsa.gov/odi/tsbs/2019/MC-10168785-0001.pdf
No, just looks like a little seepage,not even a real leak.I'd just wipe it off and check occasionally.From that picture, it looks like they leak from the top of the boot. If it is not under warranty and you are going to change it yourself you can probably wait for nicer weather if it isn't making noise. It doesn't look like it leaked that much yet.
At least they handed you some Vaseline.They just spouted some BS about changing out both belts (this at 29k miles)along with the tensioner and quoted me $420 .They said not covered by warranty (I was past the 3 yr warranty) and that they leak around 40k miles.I had a nearly identical experience yesterday. Picked up my 2016 CX-5 AWD GT from an oil change at my local dealer and was handed a jar of Vaseline when they told me that I should replace my tensioner as well. 53k on the odometer. Estimate at just under $400. Reporting to NHTSA.
At least they handed you some Vaseline.They just spouted some BS about changing out both belts (this at 29k miles)along with the tensioner and quoted me $420 .They said not covered by warranty (I was past the 3 yr warranty) and that they leak around 40k miles.
Once something is leaking it’ll keep leaking until the fluid is below the threshold making the leakage or the fluid is almost running dry. My leaky tensioner will be replaced soon but not in a hurry. In the mean time I’m waiting for a recall happening if we’re lucky like the problematic LED DRLs on ‘16 CX-5.Of my 3 Mazdas ('14 M3, '16 M6, and '17 CX5), the Mazda6 showed the oil stains like the pic above, and even on the generator (I wonder why). I cleaned it up completely. I have not seen any sign of leak for more than 6 months. I will keep it under regular check.
Maybe yours had belt dust sticking to the tensioner and alternator and it wasn't an oil leak.But, I have not seen any sign of leak for 6 months after cleanup. I check it every weekend.