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Mazda CX-7 AC problems



  • wwestwwest Posts: 10,706
    Go to Home Depot and purchase a water flow shut-off valve to insert in the water hose to the cabin heater. Close the flow during the summer when the A/C use is predomninatly for cooling and thereby increase the A/C operational efficiency dramatically. Much lower load on the engine cooling radiator with the A/C compressor not cycling on as often.

    But nothing will make up for ignoring the need for regular oil and filter changes, especially with a turbocharged motor. I would NEVER buy a used car with a turbocharger absent a discussion with the previous owner to make sure that the previous owners wasn't of the "boy-racer", or "like", mentality.
  • cdcampcdcamp Posts: 1
    First off I do not claim to know anything about auto's:

    With that said I am looking for some reassurance and advice:

    Yesterday (May 10th, 2009) my AC compressor clutch went out on my 2007 touring CX-7 Below I have listed the facts:

    1. I am 300 miles over warranty 36,300
    2. I had a full (top of the line) inspection at the top mazda dealer in Omaha before the warranty expired less than a month ago
    3. The dealership feels bad that this has happened and offered to pay for all labor costs
    4. I have to pay parts $1,200 for a new A/C compressor clutch

    My question are:

    1. Should they have foreseen this problem? (I understand not all things are able to be foreseen)
    2. Is $1,200 sound right for a new AC clutch?
    3. Would I be safe with a used AC clutch?

    Thanks in advance for the help!


    UPDATE: my A/C compressor went out at 36,300 miles (300 miles after warranty). Dealership said they would pay for labor because I had a full inspection 3 weeks ago on the vehicle. Below is service sequence of events:

    Before I go into the summary of conversation I first want to say that all the dealership and Mazda customer service personnel were highly professional and very kind. I too was professional (IMO) and was not trying to flame them but, trying to reach a reasonable solution to the problem:

    1. Dealership: Woodhouse Mazda - Omaha
    1. They acknowledge that this is one of the main problems on CX-7's
    2. They acknowledge that the old A/C unit is faulty (Because the new unit is a redesign)
    3. They acknowledge that they do not check this problem as a "preventative maintenance" check (prewarranty)
    4. They acknowledge that they have a significant markup on parts ($1,200) so "Free Labor" is just another tool used for customer service

    2. Called Mazda customer service
    1. They said that they might be able to file a "Post Warranty Claim"
    2. While on hold he spoke to the warranty and they said the "district manager" knew the situation and approved "Free Labor" as the best they could do.
    3. Mazda (Customer Service) then claimed that was the best they could do.

    So in conclusion, I am out $1,200 dollars because of a faulty (Poorly designed) A/C compressor. So not only was I on the side of busy highway switching my baby and baby's car seat into my surprisingly reliable BMW 5 series (with 75,000 miles) but, now I have to pay 30% margin on new parts.... But hey the Labor is Free!! Thanks MAZDA!!

    Be Warned: THIS PART WILL FAIL (Make sure it fails before your warranty is up)

  • tidestertidester Posts: 10,110
    Make sure it fails before your warranty is up

    Exactly how would one go about doing that? :)

    But seriously, I'm not sure there's anything you can do at this point except try to talk them into giving you a bigger break on the cost. Even if they had inspected the clutch, anything they might have discovered would likely have been designated as "normal wear."

    tidester, host
    SUVs and Smart Shopper
  • wwestwwest Posts: 10,706
    I know things are often more expensive these days than I expect but even so $1200 seems more appropriate for the entire compressor/clutch assembly rather than the clutch only.

    Check with an aftermarket shop and you may get by with lower cost parts AND labor included.

    Just a quick check with Google indicates automotive A/C clutches sell for ~$100 and compressors for <&400.

    As the rabbit said as the combine approached "I'm about to be REAPED!"
  • sdbobo619sdbobo619 Posts: 13
    Call MAZDA customer service in IRVINE,CA and explain the situation, they know they have higher than acceptable failure rates with the 2007 CX7 AC system, as mysteriously the system was redesigned the following year. Tell them you expect them to take care of it and that you are aware of the issues with the CX7 AC system. And FYI 1200.00 for the parts only is ridiculous and is a scam, your dealer is trying to show he is helping but is just burying the cost of the labor in the PARTS..... I had my whole system replaced with labor and tax and the bill was 1400.00 but I called mazda and got them to split the bill as my car had 39.5K. So I saved 700.00 by doing some research and spending 15 minutes on the phone...
  • wwestwwest Posts: 10,706

    Not to be on Mazda's side, not by any means, but it was about this time period that many manufacturers began the switch to the new variable displacement compressors to improve FE.

    And God knows the CX-7 could use some FE improvment.
  • defreitasmdefreitasm Posts: 152
    Mine started making noise so I got it replaced before it actually went completely. Unfortunatly it happened at just under 38,000 miles so it cost me about 1200 to repair. I had no idea that this was a common failure.
  • runnernicrunnernic Posts: 15
    i have a 2008 grand touring cx-7 which i leased brand new in september... i have had nothing but problems... my truck is going in for the 3rd time tomorrow... i just had a new compressor and clutch put in because it was blowing out hot air.. now, if i leave the a/c on, the more i drive the warmer the a/c becomes.. it's crazy i'm so fed up about this... every time i accelerate, it blows out hot hot air... then, it doesn't return to even being somewhat cool... the 1st time i went in, they said there was absolutely nothing wrong with my truck and then i went back again because i knew i wasn't crazy... it's so ridiculous, i have to leave the car to get it checked pick it up then bring it in again for them to fix it... i had a honda before this and never had one problem with it! i'm so torn on what to do they said among cx-7's it's common for the compressor to stop working
  • wwestwwest Posts: 10,706
    Almost all modern cars with AC will disable the compressor as a preventative/protective measure if the engine coolant temperature approaches the point of overheating, not ACTUAL overheating, just rising to a nearby level.

    Most of these vehicles, if not all, do not have any type of indication to the driver as to what or why this has happened. But in most vehicles this disabling of the AC compressor would be so temporary that the driver would take no notice.

    "..every time i accelerate..."


    TurboCharged engine...water cooled turbo....??

    Newer variable displacement AC compressor...??

    Lets suppose your engine is normally running slightly hot, on the hot side of the operational envelope. Then add the extra HEAT of cooling the turbo when you are accelerating and it could be entirely possible that the AC compressor will be disabled until the engine coolant temperature declines to something nearer to normal operating temperature.

    The old fixed displacement AC compressor systems always had a reservoir for temporary storage of liquid refrigerant. The compressor only ran if/when this "reserve" was exhausted. The new variable displacement compressor can be set to compress refrigerant ONLY as fast as it is being used up.

    So if the compressor is disabled even for a relatively short period the loss of cooling effects will noticed almost immediately.

    But it sounds as if your engine/turbo/coolant may be always running slightly HOT.
  • I found this forum as a result of searching for AC Compressor problems on my 2007 Mazda CX-7. I was about 250 miles from home when my vehicle became non-drive able. I would like to add the following information:

    1) The vehicle has just under 44,000 miles on it.
    2) Dealership tells me that the cost to repair just the compressor (which seized) is $1,400 (I do not know if this includes labor, but I suspect that it does NOT).
    3) Dealership tells me that there are NO parts available in the United States!
    4) Dealership tells me that there are over 300 orders a head of mine for AC Compressors. This tells me that this is a KNOW FAILURE!
    5) Dealership states that even if he gets my part prioritized (as my car is non-drive able) that I can't expect to be back on the road until at least the end of June.

    Oh yeah, let me mention that my battery cables have melted due to this problem.

    I'm going to report this to NHTSA and find any other forum that I can to air my complaints. I can NOT afford a repair that will cost over $2,000 for a vehicle that is just over 2 years old, especially when I'm learning that this is a KNOW FAILURE.
  • wwestwwest Posts: 10,706
    "..battery cables melted...."


    Those are pretty damn healthy cables.

    The ONLY time I have seen that happen was with the ignition key stuck in the "start" position keeping the starter engaged with the engine running. The starter, accordingly, acted as an engine driven generator and attempted to charge the battery to an "infinite" voltage.

    Melted the insulation off of the battery cables and the ground wire burned open.

    I can think of NO other reason for melted battery cables, not even a "runaway" voltage regulator.
  • sdbobo619sdbobo619 Posts: 13
    You need to call the mazda service center (1-800) and tell them you are not paying 1400.00 they will split the bill with you at least. And everyone needs to report to NHTSA on their website. Maybe someone should start a class action
  • Drove from Detroit to Fort Wayne, Indiana (3 hour drive) to speak directly with service adviser and return rental car as I can't afford to keep this. I was informed that the battery cable is part of a wiring harness, and isn't as simple as a battery cable as I know it. It appears that the part has some sort of resistor part (like a fuse) that broke in two. I took pictures in case anyone wants to see this. The serpentine belt had threads holding it together and it would have broken within a short amount of time. Was told that my part has been "prioritized" and that it should arrive at the port on or around June 29th. Not sure how long it will take before it gets to the dealership.

    Good news is that the Mazda rep has agreed to pay for 75% of the cost of the repair (includes new O2 sensor, serpentine belt, AC compressor, and now a complete wiring harness/battery cable (dealership was originally going to repair this). I'm still not happy that I will have to pay up to $680, but this is better than the $2,000 originally quoted.

    Plan to file complaints with NHTSA later today as I see this as a potential "thermal event," also known as a fire. If the serpentine belt would have broke, I would have been stranded on the freeway with two other adults and a dog. Luckily, I had pulled into a rest area, so we were all safe.

    It's obvious that this is a common problem with the 2007 CX-7 as there are numerous complaints already on NHTSA's website.
  • runnernicrunnernic Posts: 15
    thanks so much... it's just ridiculous and they keep telling me o well there's nothing we can do about it!!! i'm so fustrated.. i practically live at the freakin dealership!
  • rhondebrhondeb Posts: 1
    I bought my 2007 Mazda CX7 in November of 2006. I did not use the A/C until summer of 2007 then again summer of 2008. My mileage is approx 44,000. I live in a rural area so I have long distance driving to go anywhere.
    This being my 3rd summer of A/C I was totally dumbfounded when the air started blowing warm in May 2009. Reading these posts I see I am not alone. I am ready to
    go after Mazda to fix this problem especially knowing the problem is there and having so many people dissatisfied. Even though I am over my warranty, I will fight this!

    I have to travel 120 miles just to get to my dealership. When I took it in to be looked at, they told me it was the compressor and it would cost $1500.00
    Then they tried to sell me an extended warranty to use to get it fixed. Is that a scam or what?
    Has anyone out there had some satisfaction from Mazda? I'm just now looking into what can be done. Thank you your input on this.
  • sdbobo619sdbobo619 Posts: 13
    call Mazda, someone needs to take this to an attorney, they will have a field day with this. Its so obvious Mazda is covering it up
  • ningjningj Posts: 1
    After reading so many stories about CX-7 AC compressor failure on this sites, I think Mazda needs to recall this model. Here is my experience.

    I drove Mazda CX-7 that I leased on 2008 September to Lake Tahoe for family camping activity on 06/12/09 from San Jose. After about 3-4 hours drive, we almost reach Lake Tahoe but air condition went off and we smelled something like burning plastic. I know something was wrong but luckily I arrived safely in camping sites.

    On Saturday (06/13/09) morning when I went to gas station to add fuel, the engine generated heavy smoking and I have to stop to call roadside assistance. My CX-7 was towed to Carlson Neveda, which is about 30 miles away. I had to use a rental car to continue my camping activity and drove back the rental car back to San Jose which was 250 miles away. One week later on 06/19/09, Carlson Mazda dealer called me that my CX-7 was fixed after replacing AC compressor. I had to drive up total 10 hours round trip to get my car and return rental car. It was bad experience.

    Since my car was less than 2 years old about 25k, I asked Mazda manager whether this CX-7 ac compressor problem is common or not, his answered was a simple 'no'. But I think CX-7 was a defect product and lack of quality control from Mazda.

    Although I did not need to pay for repair because under warranty, I will never trust Mazda again. I hope Mazda file bankruptcy soon like other GM cars because their products should not be in the market. In my opinion, this kind of problem caused engine smoking on its belt is highly dangerous and fatal error that could cause severe tragedy on the road. This problem should not occur on a 1 year new car.
  • huyeniehuyenie Posts: 2
    Does anyone have any suggestions?

    The mazda dealership wants to charge us almost 3k to fix our 2008 Mazda CX7. :mad: Apparently the service guy said that it was in fact the AC pump that failed and caused all the other problems. He said that the pump, clutch assembly, tensioner, belt, and some crank bolts need replaced. He also said the it would not be covered under the power train warranty. The gentlemen I spoke with there before, said that if the service dept. deemed that it was the AC pump that caused the problem, that it WOULD be covered. That&#146;s why I had it towed 75 miles down there!
  • huyeniehuyenie Posts: 2
    Just went to the Defects and Recall website and reported the defected AC compressor in my 2008 Mazda CX7. I have a feeling more and more 2008 owners will soon have the same problems. It only took a minute to fill out, just have your vin# handy. PLEASE report this if you have a similar problem with your CX7. Here's the website again:
  • Well, just got home from my long drive (3 hours to be exact) to pick my 2007 Mazda. After a phone call from the Service Mgr, I was seeing more red than you can imagine. Basically, he threatened me and told me that if I didn't accept Mazda's offer of 75% off of my repair bill, I was going to have to pay the full $3300! He told me that Mazda was upset that I was making such demands of 100% payment of the bill, reimbursement for rental car, etc. and that they were going to rescind their offer of 75%. After I calmed down a bit, I could see a little clearer. I put on my "happy face" and had a friend drive me down to pick up the darn car. I figured that I could fight things once I paid the bill. On the advice of NHTSA, I will be contacting my State Attorney General and will put the car up for sale tomorrow! On my drive home, stopped for gas (was down to 1/4 tank) and upon restart, the vehicle sputtered and stalled. Same thing on second attempt. Third attempt, I gunned the engine a bit and was on my way. Called the dealership on my way home to give them a "heads up" that I was experiencing problems. What a headache.
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