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Infiniti M35/M45 Maintenance and Repair

kfhmailkfhmail Posts: 199
OK...let's see if there are any problems with the 2006 M35.


  • patpat Posts: 10,421
    Well, how 'bout we add the M45 to it as well? :)
  • varixvarix Posts: 72
    Purchased M35X liquid plat with premium pkg one week ago. Only one problem; static from left drivers seat surround speaker at higher volumes. Getting it replaced next week. That's it problemwise, otherwise flawless... :D
  • drtraveldrtravel Posts: 395
    The moonroof frame rattles a little while driving over bumps or whenever I make hard turns and the car's body flexes. I hear this "squeaky noise" behind and over my right ear. It's a pretty irritating noise especially when driving on freeways and their multi-grooves.

    Took the car over to Tustin Infiniti. They heard the noise and had the Japanese engineers look at the car. They removed the headliner, adjusted a few moonroof bracing members and added a piece or two of rubber. Took the car for a test ride and claimed success.

    I picked the car up and after only two miles of driving the noise was still there. Was not a happy camper. If I hadn't actually seen my car with it's headliner down I would have suspected they did nothing at all. I've driven it for three weeks now and the noise seems to be getting more noticeable - of course I could becoming more sensitive to it.

    Will take it back but they again need the engineers to look at it.
  • drtraveldrtravel Posts: 395
    Whenever my car is parked and cools down (even after short 3-5 miles trips) I hear a banging sound (sounds like a loud wind chime) from under my car. Sometimes this goes on for over 30 minutes with a chime every 5 minutes or so. The first one occurs about 3 minutes after engine shut-off although often this is a small chime. Later occurrences are louder.

    Took my car over to Tustin Infiniti and again the Japanese engineers looked at my car. They diagnosed the noise to be caused by the contraction of the exhaust heat shield. Umm...they classified the noise as "normal". The technician tried a fix by heating up the shield then reconnecting it in the fully expanded position. He also put a minor crease in it to allow for some flexure. Sounded promising at the time but alas the noise is still there - maybe even louder but then again I'm probably more sensitive to it now.

    Will take it back but again they need the enginners to look at it - say their hands are tied because the car is new.

    My big issue is that the noise is classified as "normal". When I first took the car in the service writer heard the noise (for at least 30 minutes) and said he had never heard it before. I actually test drove four other M's at two dealers - drove them hard then parked them and listened for at least ten minutes - heard nothing. I have been monitoring these boards carefully and no one else has reported this problem. Believe me if you heard the noise you would complain. If this sound is normal it would occur on most cars yet I have no evidence that this is the case except for Tustin Infiniti and their Japanese engineer saying so.
  • alexr9alexr9 Posts: 1
    I'm having the same problem with my car. Yesterday I took my M35 to the Infiniti in Valencia and they gave me the same song and dance that the noise is "Normal". The dealer said that they are going to order a new exhaust and hopefully this will fix the noise.

    I agree that the noise is very annoying and extremely loud. I'm hoping that by replacing the exhaust the noise will be fixed.
  • prophetprophet Posts: 72
    I have an (infrequent) overhead clicking sound which was traced to the moonroof rails by two tech's from the dealership. They are on order for replacement. With 4,600 miles on my M35, its a much better vehicle than my BMW 5 series was & the electronics are first class.
  • tom43tom43 Posts: 8
    I have owned my M35 for 4 weeks now, with 1400 miles on it. I have a very annoying rattle noise coming from the rear passenger side (I can't seem to isolate the exact location). Is anyone else hearing that noise? Other than that by far the greatest car I have ever had and driven. Look forward to any feedback.
  • prophetprophet Posts: 72
    Have them check the moonroof assy. (it was hard to pin down but that's where mine was).
    However, it sure beats my previous 2003 BMW which had a drivers door/window creak which wasn't fixed until the month before I traded it in for my M.
  • The only problem I've had, and it's more of an annoyance/poor design than a real problem, is that the car doesn't clear a standard concrete parking block. Any stall I pull into I have to be careful because the front undercarriage scrapes against any concrete parking block.

    Otherwise the car has been an absolute joy.
  • drtraveldrtravel Posts: 395
    Spoke with the owner and service manager - both of whom said my noise was definitely not normal. The called the Infiniti engineer from Japan who brought along a few other factory engineers with him who did all the repair work.

    They replaced the entire sunroof assembly which took care of that problem.

    They also replaced the Y-Pipe for the exhaust system - this might have been a newly updated design but am not sure. They all seemed very interested in this problem. Anyhow the noise is no longer present.

    Dropped the car off Monday AM - it was ready Tuesday PM. Suprisingly quick considering they had to remove and replace the headliner plus get the parts. I'm guessing that the factory engineers had some pull.

    So now I give Infiniti two thumbs up!!

    PS. As far as the engineers knew I was the only owner who had these two problems, which makes the new M a very reliable car.
  • infinity2infinity2 Posts: 12
    I have the same problem. The rattle in the moonroof drives me crazy. I went to the dealer and he said I was the first person to complai about it. They tried using some insulation tape but it did not work. I am not sure I want them to ttake the roof assembly apart and repalce the sun roof. I will play it by ear and see if the rattle continues to annoy me.
  • infinity2infinity2 Posts: 12
    I get the same loud bang about 5 minutes after I turn off the engine. Happens about 50% of the time. I hae not spoke to the dealer about it yet. I will watch and see if it gets worse
  • infinity2infinity2 Posts: 12
    I have an m35 and really like the car. However, the engine seems really loud at times and I am wondering if it is normal. Anyone else have that problem?

    Also, A moon roof rattle and loud banging noise coming from under the car after the engine is off for about 5 minutes are problems as well.

    Anyone else have suggestions of the same problems?
  • prophetprophet Posts: 72
    Engine sound under acceleration is normal given the gearing on the M35. Its higher pitched than my BMW 530i was but otherwise the same. The Moonroof clicking I had went away by itself. Ironically, the exhaust system heat expansion/cooling noise on shutdown is still there although not as loud. If it continues I'll have the dealer look at it during my next oil change.

    With more than 5,000 miles behind me the car runs great. The electronics are first class and beat anything I've ever owned.
  • docnukemdocnukem Posts: 485
    Interesting. I had a moonroof rattle (kind of sounded like two small glass globes knocking together) from the rear passenger side of the moonroof. I have not heard it for some time now. It was usually present for most rides but went away for short periods. Now it appears to be gone.
  • pete15pete15 Posts: 5
    I have had my m35x since late March. Recently the moonroof stopped opening or closing all the way when I hit the button. When I hit the button it goes an inch. If I hold it down it goes an inch. It happens in either open or close. I can get it to open all the way and close all the way but it takes dozens of button pushes to do it. It had been working fine until about a month ago. I am scheduled for a visit to the dealer in July.

    Is this a malfunction or an incorrect setting? Anybody else have this kind of problem?
  • carnaughtcarnaught Posts: 1,566
    Had I think similar problem. A piece of plastic on the right when popped up was acting as a splint. It was fixed at the dealer in the drive and I was on my way with no problem(s) since.
  • tomnhtomnh Posts: 12
    I have also had my M35x since late March and my sunroof stopped like yours. The dealer ordered a new motor and replaced it. Last week it happened again. They are now telling me that the rails need to be replaced as well. This will happen next week.
  • ewl88ewl88 Posts: 71
    I posted this earlier in the main infiniti m35/45 area but I guess this is the more appropriate place...

    I have ~1200 miles on my m35x. I've noticed my steering wheel seems to have less resistance (feels "looser") esp at lower speeds ~20-25 mph compared to when I first got the car. Then it firms up to where I want it when I reach highway speeds. Is that expected? Is this just a function of the breaking in period? (I think I preferred the steering feel at lower speeds before)

    Has anyone else noticed this? It's subtle. So much that I'm wondering if it's just me and not really a problem at all.

  • stixpixxstixpixx Posts: 10
    I finally purchased my new M35 with Tech/Journey at Tustin Infiniti. Sales manager was great. With the help of Car_Man in the Leasing forum. I walked in they had the car I wanted, worked with salesman and sales manager, told him what I was looking to pay and what leasing numbers I expected. The deal took 2 minutes to get done. Got $2700 off MSRP of 49910. Paying $607.00 a month plus tax with $1637 drive offs on a 39 month 15K miles. Thanks to all, these forums have been invaluable in acquiring my new M.
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