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While trying to find what sounded like wheel-bearing noise ("airplane noise") on our 2009 Mazda 5, I found that the driver's-side inner (tripod) joint boot had let go at the small end. I assumed that it was the tripod joint making the noise, and did a lot of research as to what was the best...

Do you know if the Bluetooth module is covered by some sort of extended warranty as a result of the TSB? It's not a big deal as we've never used it, but but I would get it replaced if there were no cost involved.

Hello all - For the last few years I've been running an onboard charger(NOCO Genius 1100), plugging it in when I think of it, fairly frequently in the winter. Because the use of the charger may have been masking the high dark current for awhile, it's hard to say when the problem started. In...

Beautiful car! As a 2nd-gen 5, it's equipped with a 6-speed, correct? I covet ... Hey, one thing to be aware of ... the 5 is not rated to tow, although I did add a towbar (hitch) solely for the purpose of hauling our bikes around. Class 1 (1-1/4") is the only hitch available. We have a...

Arg, the filter on the LHD version is already rather challenging! I would presume (but could well be wrong) that the UK (RHD) version is the mirror-opposite - that is, you remove that panel on the L (rather than the R) of the console, down in the passenger footwell. First time was challenging...

I'm assuming you've got a manual transmission. If so, I recommend that you: 1. Bleed the clutch fluid @ the slave cylinder on the transmission. This can make a huge difference! https://www.bobistheoilguy.com/forums/ubbthreads.php/topics/5354904/dont-forget-about-your-clutch-fluid#Post5354904...

Hey '08, have you solved this yet? I recently replaced the O2 sensor in our '09 (on the basis of mileage, not because there was a code thrown). I checked the resistance between the pins on the connector, with the following results: YL - BL = 2.7 Ohms (I would guess that this is the heater...

Hi Joe - Good question! I'd wondered the same. Haven't had any need to access same yet, but looked it up in the factory service manual. Ours is an '09, but I would bet your '12 is similar. Good news - there is an access hatch from inside the vehicle (which means that you don't have to drop...

SN13, right you are! I was talking about the A/F-ratio (upstream) sensor, not the cat monitor (downstream).

I've replaced it with an NTK from NAPA. It's a wideband unit. Easy job - about five minutes to remove the old one and install the new one. Used a purpose-designed O2-sensor socket - 22 mm crowfoot-style. You're right, the old one (Mazda-branded) was made in Japan, so was almost certainly a...

Good information, thanks! I've recently installed a Rola roof rack. Could tie the strap to it instead.

We bought our '09 Mazda 5 in 2013, and I bought and installed a Class 1 tow bar within a couple of weeks, with the intention of using it only to haul our bikes around. I don't remember the hitch manufacturer (and the car's not home as I write) but think it was a Reese. In any case, it has the...

Hello all - I'm considering replacing the O2 sensor on our '09 Mazda 5. The car's running well and is not generating any "check engine" codes, but some O2 sensor manufacturers (and some independent sources) recommend replacing the upstream sensor at 100K miles/160K km. Our car is at 170K km...

Well done! Must be some highway miles in there. Our '09 is running well at 167K km (c. 104K miles).

Ha, yes, I had fun last summer changing ours. First change for us, and likely the first ever. (We've had the 5 since 2013.) It was way overdue. It is pretty challenging, but I think it will go a lot faster next time.

ms2000, here's a link to a few YouTube videos: https://www.youtube.com/results?search_query=mazda+3+replace+pcv+valve Given that the Mazda 5 is based on the Mazda 3, the procedure should be the same. I should change mine at some point - our '09 is at 159K km. If you get to this before I do...