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Infiniti M35/M45 Maintenance and Repair



  • I'm considering a M35X for my current A6 and the poor performance of the heated seats is a big negative for us. Is everyone having this problem? Does it heat both bottom and back? Does the ventilation feature work well? :confuse:

  • james27james27 Posts: 433
    The cooling is nicer than the heating. The heat doesn't appear to be electrical resistance heat like on most seats and takes longer to notice. It does cover both the bottom and the back.
  • My A6 and my XC90 had great seat heaters. The M35 has bad heaters, but the rest of the car makes it a much better experience! The seat AC isn't much better, and feels as though they wet, even though they aren't.
  • art234art234 Posts: 99
    Has anyone with an M35 experienced a buzzing sound or vibration from the engine compartment between 2500 and 3000 RPM, particularly on acceleration? It seems like a loose shroud or engine cover, but the dealer can't find it.

    Any ideas?
  • art234art234 Posts: 99
    Oh yeah, I agree with all who say the seat heat on the M is slow and not great. It seems to start faster if it's been on for a while, then stop the car and restart--although I can't figure out why.

    My wife has the RX-400H from Lexus and the seat heat on that is amazing.
  • I have a 2006 Infiniti M45, with the Adv Tech package. I have what looks to be aux inputs mounted behind the center console next to a "lighter" power outlet. Anyway, I just recently got a Creative Zen Micro and connected it into the aux inputs. Unfortunately, when I push the steering wheel "source" button all that it cycles through are the 3 sets of preset radio stations - the aux input is never enabled...

    I am sure that this is a silly question, but I must be doing something wrong... I looked into the manual (yes, I broke down and did that!) and all it says to do is to use the "source" button...

    Any help would be appreciated. I can always get one of the FM based solutions, but I know that I would be giving up way too much audio quality.

  • art234art234 Posts: 99
    You have to use the Disc selection on the dash-and when you cycle it tot the DVD, move the cursor down to the AUX button in the lower left hand corner and enter.

    My IPOD plays fine throught the aux inputs, although when connected to the cig lighter jack it makes a humming noise.

    That should help you.
  • bcorigbcorig Posts: 13
    Related question - is the Advanced Tech package the only one that has AUX inputs? I'm still playing my iPOD through the radio by FM transmission - really decreases sound quality
  • art234art234 Posts: 99
    I think you need the upgraded audio with dolby 5.1 and the audio DVD player in the center console in order to have the AV inputs in the back, although I am not sure--and I am not sure which package that is part of.
  • Thanks for the pointer - don't know how I missed that! Anyway, works great now. I now have my MP3 player hooked up to a Creative Xmod unit (which acts like an external sound card using Creative's X-Fi technology), and then the Xmod connected to the Aux inputs in. The MP3 player and the Xmod unit are neatly tucked into the center console so there isn't any clutter. The sound is great - once again, thanks for the help!

  • art234art234 Posts: 99
    No problem--it was my pleasure.

    Enjoy the ride....
  • tayl0rdtayl0rd Posts: 1,926
    I've read in the M forums here that the M doesn't use heating elements to warm the seats. It actually uses the HVAC system of the car! That's about the worst possible way to heat the seats. By the time the cars heating system is warm enough to produce warm air, the seats will already be warmed by your body anyway. Very poorly executed by Infiniti. The cooling portion also takes far to long to become noticeable; again, because it is dependent on the car's HVAC system.
  • rollbarrollbar Posts: 297
    This is the first post from me on the M board. I have a 2006 G35 Coupe. I'm posting because I have a problem with the transmission in my Coupe that may pop up in the M45.

    When shifting manually, sometimes the shift from 2nd to 3rd is very harsh. It actually slams into 3 so hard I wonder if the rear end is going to show up in my rearview mirror. :cry:

    Dealer tried a new valve body but it didn't fix the problem; they are busy now putting a new trany in the car. New I say because apparently there are no rebuilts available for my 2006 Coupe. That's a good thing, I would not have been happy with remanufactured.

    The kick here is that the Dealer had two cars in the shop with exactly the same symptoms; you guessed it, the other car was an M45. Apparently the two share transmission components. The two tranys are not identical but close.

    I don't have any info on the M35 but since it uses the same engine as the G35 the tranys maybe identical.

    The Dealer has questioned Infiniti several times but has been told there is no "problem" with these gearboxes. I got the impression the Service guy was skeptical. He is still amazed they would have two cars in at the same time with identical problems. (Yup, the M is upshifting hard between 2nd and 3rd too.)

    Well, back to my G35 Coupe board; just thought you might want to know.

  • james27james27 Posts: 433
    They're replacing mine on Monday in a 2006 M35x with about 15K miles on it. The loaner (a G35)had a perceptable difference on the 2-3 shift vs the others, so I think it is a generic problem. Hopefully, the new one is better!
  • james27james27 Posts: 433
    I'm not sure, but the heating/cooling MAY be from a peltier diode type component, and not directly from the hvac system. Anyone know for sure?
  • james27james27 Posts: 433
    Has anyone bought the M's service manual? Retail is about $220 and a cursory search didn't find it for less. While I normally don't do much work on a car, it is nice to understand what it entails and to have a decent wiring diagram to decide if a tweak is possible or desirable.
  • rlejr66rlejr66 Posts: 44
    Long overdue follow up on this post that seemed to fall into never never land. I took my '06 M35 Sport in for the 15K service last Friday. When I finally got a chance to look at the receipt last weekend detailing the work that was done, what did I see? I saw that the recall for the ICC was done during this visit. Interesting that I never received any feedback from Infiniti after calling to find out what the deal was back in July '06. I just assumed the recall had been cancelled indefinitely. I guess it wasn't a life threatening thing. Although I would think the correct functionality of the cruise control would be a major safety concern which should have been addressed asap.
  • rollbarrollbar Posts: 297
    New tranny is hooked up and I'm back in the seat again. By the way, there is no doubt, the sedan seat is wider than the Coupe. I was comfortable in the sedan but the second I got into the Coupe I felt the pressure of the seat control panel on my right thigh.

    Car shifts fine although I thought I picked up a bit of an affirmative bump 2nd to 3rd this morning. We'll see over the next week or two if it's really gone; maybe the new tranny will develop the same problem. Hope not. If anyone can bring out the problems it may be me, (Infiniti may put me on a "Do not sell to" list.) Do Dealers share those lists?

    Funny; when I picked up my G35 Coupe the guy with the M45 that had the same problem, (and also just got a new transmission), was standing at the counter going over his invoice for the tranny, ($4,000). We were both covered under warranty of course. He apparently did not know a Coupe was in with the same problem and seemed concerned that we might have the same transmission. Service tech stated they were not identical. I'll bet the differences are not significant; mounting brackets, etc.

    The tranny and test results were headed back to Infiniti for analysis by the engineering folks who were interested in trying to sort out the problem Dealer said. I bet so at $4 K a pop.

  • I don't believe the M uses peltier diode components for heating/cooling the seats. While useful in small footprint applications (such as computer CPU cooling, drink holder cooling, etc), the last time I checked peltier diodes were notoriously inefficient, dissipating a significant amount of heat for only a little cooling, and may not be well-suited when trying to cool the larger surface of a car's bucket seat.

    Also, anecdotally, the fact that the seat's cooling/heating is almost perfectly timed to the status of the car's climate system certainly indicates that they are simply capturing heated/cooled air from the climate control system and forcing it through the ventilated seat via a blower. That would also certainly justify the formal name for the system being "Climate Controlled Seats".

    Interestingly, if you get the M package with the deluxe rear seats, they are heated using traditional, dedicated electrical heaters. Too bad they didn't elect to combine the best of both worlds and use quick-warming electric seat heaters for winter plus the a/c cooled air for summer.

    The "climate controlled seats" do take longer to warm up than the "old fashioned" electric kind, but having access to the ventilated cooled seats in the warm months makes it worthwhile, IMHO. :-)

    - Racer_X
  • Too bad they didn't elect to combine the best of both worlds and use quick-warming electric seat heaters for winter plus the a/c cooled air for summer.

    Amen. Perfectly explained and I agree with your final comment. The concept of using "climate controlled" air really makes sense. Unfortunately, the engineers didn't consider that most people use the heater function to stay warm until the climate control kicks in. Also, many people have begun to use the seat warmers as therapeutic heat rather than a function to keep warm. My girlfriend keeps the seats in her BMW on the high heat setting even during the summer.

    Though others on this forum have commented otherwise, I have yet to drive a car with seats that cool as nicely as the M. Other manufacturers merely run fans to reduce sweat on your back... giving the illusion of cooling. The cool air from the climate control system on the M is terrific.
  • s54s54 Posts: 29
    Anyone know of an effective and safe polish for the grille of the M? I have a number of spots related to salt or magnesium chloride or whatever they use in Colorado.


  • tayl0rdtayl0rd Posts: 1,926
    ... Though others on this forum have commented otherwise, I have yet to drive a car with seats that cool as nicely as the M. ...

    You really need to experience the Mercedes ventilated seats this Spring/Summer. The M's seats are utter rubbish in comparison, IMO, of course. The beauty of the Mercedes seats is that they are engineered as they should be. They don't force air through the seat, they draw it out. Much more effective at eliminating and preventing sweat and cooling you off.

    I've tried the M's seats and didn't care for them at all. It seemed to take forever for any cooling to begin and when it did, it seemed to only be on the seat bottom.
  • I have an '03 SL500 and had an E prior to the SL. I also converted a family friend to MB with an S. The ventilated seats function the same way in all three of the cars I've been in. They wick but don't really cool.

    I wish the M moved air through the entire seat, but you are correct that air is moved only through the seat bottom and the lumbar region of the seat. Even with this limitation, and with dark graphite seats, I've found the M's seats to much cooler that MB's.
  • Anybody here of an issue like this?
    I felt some strange shaking in the steering wheel when breaking from the first day that I got it. Thought it might just need to be worked in a bit. After 400 miles, it was still there, so I brought it in.

    They said the Rotors had warped and had to be replaced.

    Anybody ever here of such an issue?

    Anyway, they replaced them, balanced the tires and changed the oil Free of Charge.

    Just wanted to get some opinions on this.

  • All, Another issue I had, is that the Driver Side window will go Auto down, but not auto up.

    I inquired at the dealer, and they said the computer needs to be programmed and I have to bring it back in.

    Is it possible to do myself, or does this have to get done at the dealership?

  • james27james27 Posts: 433
    After I had some soundproofing installed, the windows weren't reliable in using the one-touch up/down. They told me they had to adjust the limit switches, course it could have been readjusting the computer. If the motor is a stepping motor, that might work with resetting the computer (i.e., telling it it is fully up, then moving things down and telling it the position), I don't know.
  • I haven't been on this Board for a while, but I am very interested to see your post about the rough shift from 2nd to 3rd. I have an M35x that does it and I posted a question about this issue a few months back and people seemed to think it was just me. I guess not.

    Interestingly, I was part of an Infiniti owner focus group about a year ago and the chief engineer and some specific feature chiefs (sound note, ride) from Japan rode with me in my car. We talked about a lot of things and they taped it. It was pretty cool. Anyway, I asked about the rough upshift from 2nd to 3rd and the Chief engineer said that it does not indicate a problem.

    I have just about stopped trying to use the manumatic shift because it is so difficult to get it to shift smoothly. I've tried everything and sometimes I get lucky.

    Otherwise, I really love the car (2 years, 27K miles). I have been a little disappointed in my dealership - they are not in the same league as their competitors in this class.

    Thanks for the post, I'll keep an eye on it and if it gets worse, now I know that I'm not delusional.
  • Go to Wham Bam is a metal polish that is unbelievable. I've used it, and its earlier version Bombs Away, for years on my Harleys.

    You know the discoloring on the exhaust pipes of a motorcycle right where they attach to the cylinders? Well the first time I saw this product used, the guy said he was going to remove that discoloration. I would have bet him $1000 he couldn't do it. I've used every polish imaginable over the years and never removed that discoloration. Well, he just started rubbing this polish back and forth over the pipes and sure as heck the pipes were restored to practically new condition. The interesting thing is the discoloration doesn't even come back at all, or not as badly.

    Since then I've used it to restore discoloration on my pipes and to restore several types of metal (such as a brass heat register) to their original condition. I'm realizing this sounds like a commercial for them. Trust me, I have absolutely no affiliation with this company, but they have a fantastic product.
  • csrmaxcsrmax Posts: 9
    FINALLY!!! someone else with the same problem.
    I have a 2007 M45 Sport with 3100 miles on it. I live in the Northeast, and I've noticed in cold weather, the transmission feels VERY rough,(worse in Manual mode between 2nd and 3rd) especially when the car is cold and ascending hills. I've had the vehicle back to the dealer for the problem, and of course, they find nothing wrong!! From your post, it seems that Infiniti is aware a an "issue" but if you could give me an idea for where I should investigate next, I'd greatly appreciate it!!
  • bobicgbobicg Posts: 15
    I have this same rubbing sound coming from the right front end . It only occurs at very slow speeds and on a hard right turn. Anyone else have this problem?? It does not seem to have any effect on the steering, braking or tires. I cannot see any wear or rub marks in the wheel well. Could this be a brake related problem, caliper or rotor? 2006 m35X.
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