re 2008 rx350 - are there any issues with diff

35

Asked by Feb 26, 2014 at 05:01 AM about the 2008 Lexus RX 350 AWD

Question type: Maintenance & Repair

Hi - I have recently purchased a used 2008 RX350 - car produces noticeable humming at
about 60kph and upwards, the dealer tells me that the crown wheel and pinion needs
replacing, car has done 75000 kilometres.  Are there any known issues with diffs, 2nd
part of question - if the car was used for towing is it possible that it was a factor?.
Thanks

8 Answers

3,545

I would say it's a wheel bearing only from experience. I have seen alot of wheel bearings fail on rx330's and 350's. I have never seen a differential fail or make a humming to this day. idk if towing would have necessarily been a factor, the bearings just tend to fail with time from what ive seen

2 of 2 people found this helpful.
35

Good day Kyle, Many thanks for the quick response. One thing I inadvertently omitted - the humming noise stops the instant I take my foot off the loud pedal and reappears as soon as I put the foot back on. The noise seems to be kind of "central", it is not coming from any particular direction.

2 of 2 people found this helpful.
3,545

If you have an exhaust gasket that is rotting away, that may be the potential problem. When the gasket fails, it allows exhaust gases to exit the system creating excessive noise since it's not reaching the muffler. I have seen exhausts leaks a few times. It's all just a guess since I can't physically see and drive the car.

1 of 1 people found this helpful.
35

Checked out the exhaust and it all OK, thanks for that. Dealer tells me that they are going to replace crown wheel and pinion - waiting for service date.

35

Hi Kyle, Got my car back from the dealer - they have replaced the crown wheel and pinion - the noise has gone - car is now super quiet. FYI they had to drop the engine to do the work.

1 of 1 people found this helpful.
3,545

Absolutely. I've pulled plenty of them. You can either pull the engine and trans and then separate the engine to get to the items or pull the trans and from differential/transfer case and do it that way. To each its own.

35

Humming noise is back - car had only done about 5 to 6k since new crown wheel and pinion. Dealer inspected car and I was told "normal noise for that car". Subsequently took it back another two times and the last time the Lexus field rep was involved and got I the same answer "normal noise for that car". Begs the question - if a brand new car demonstrated that noise what would be the outcome. Struggle to believe that a Lexus has a built in noise, if it had been there at test drive I wouldn't have touched it..

I got 2008 RX350 AWD and humming noise coming from rear end, any comments or suggestion ?

Your Answer

RX 350

Looking for a Used RX 350 in your area?

CarGurus has 20,002 nationwide RX 350 listings starting at $5,995.

ZIP:

Lexus RX 350 Experts

  • #1
    tenspeed
    Reputation
    3,280
  • #2
    Nico Vlachos
    Reputation
    3,020
  • #3
    Papaobewon
    Reputation
    2,310
View All

Related Models For Sale

Used Acura MDX
458 Great Deals out of 16,929 listings starting at $1,200
Used Toyota Highlander
457 Great Deals out of 31,158 listings starting at $2,500
Used Lexus ES 350
346 Great Deals out of 11,115 listings starting at $4,500
Used BMW X5
335 Great Deals out of 13,454 listings starting at $2,950
Used Acura RDX
183 Great Deals out of 10,808 listings starting at $4,157
Used Lexus GS 350
143 Great Deals out of 3,273 listings starting at $5,970
Used Toyota RAV4
701 Great Deals out of 46,303 listings starting at $1,195
Used Honda CR-V
736 Great Deals out of 57,132 listings starting at $1,200
Used Audi Q5
179 Great Deals out of 8,704 listings starting at $5,500
Used Toyota 4Runner
278 Great Deals out of 23,279 listings starting at $2,300
Used Lexus RX 400h
12 Great Deals out of 423 listings starting at $4,900

Used Cars For Sale

2017 Lexus RX 350 AWD For Sale
4 Great Deals out of 714 listings starting at $42,433
2016 Lexus RX 350 AWD For Sale
8 Great Deals out of 94 listings starting at $35,990
2015 Lexus RX 350 AWD For Sale
52 Great Deals out of 633 listings starting at $23,500
2014 Lexus RX 350 AWD For Sale
3 Great Deals out of 183 listings starting at $20,764
2013 Lexus RX 350 AWD For Sale
9 Great Deals out of 205 listings starting at $19,599

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.