re 2008 rx350 - are there any issues with diff

45

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

3,895

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

3 people found this helpful.
45

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.

3 people found this helpful.
3,895

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 people found this helpful.
45

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.

45

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 people found this helpful.
3,895

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.

45

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 15,776 nationwide RX 350 listings starting at $3,000.

ZIP:

Lexus RX 350 Experts

  • #1
    tenspeed
    Reputation
    3,480
  • #2
    Nico Vlachos
    Reputation
    3,330
  • #3
    Papaobewon
    Reputation
    2,500
View All

Related Models For Sale

Used Acura MDX
285 Great Deals out of 14,825 listings starting at $1,269
Used Toyota Highlander
380 Great Deals out of 48,090 listings starting at $1,500
Used Lexus ES 350
228 Great Deals out of 11,618 listings starting at $4,900
Used BMW X5
325 Great Deals out of 18,048 listings starting at $2,895
Used Acura RDX
260 Great Deals out of 14,654 listings starting at $2,999
Used Toyota RAV4
425 Great Deals out of 74,147 listings starting at $1,995
Used Lexus GS 350
160 Great Deals out of 4,018 listings starting at $5,800
Used Honda CR-V
479 Great Deals out of 72,005 listings starting at $1,300
Used Toyota 4Runner
281 Great Deals out of 32,848 listings starting at $950
Used Audi Q5
163 Great Deals out of 10,872 listings starting at $5,550
Used Toyota Camry
761 Great Deals out of 70,900 listings starting at $1,200

Used Cars For Sale

2018 Lexus RX 350 AWD For Sale
373 listings starting at $46,305
2017 Lexus RX 350 AWD For Sale
87 listings starting at $42,937
2016 Lexus RX 350 AWD For Sale
89 listings starting at $31,999
2015 Lexus RX 350 AWD For Sale
44 Great Deals out of 839 listings starting at $20,999
2014 Lexus RX 350 AWD For Sale
142 listings starting at $19,999

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.