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Acura MDX Maintenance and Repair

1820 messages,  Last post on Dec 04, 2009 at 1:04 PM

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What is this discussion about? Acura MDX, SUV


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#1706 of 1820
mysterious knocking noise!!??!!?? by joryan
Jan 31, 2009 (1:35 pm)
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I have a 2009 MDX. Daily upon a cold start up and take off, once I reach approx 18-20 mph just after shifting to 2nd gear, I hear a fast knocking in the front end of the car. It lasts about half of a second and it is about 4 or 5 knocks. The knocks are not violent, but somewhat subtle. It is only upon a cold take off. If the car has been repeatedly started and driven and it is warm, it doesn't happen. I have listened and felt for it, but it doesn't happen. It has less than 6K miles on it and I just chaneged the oil at 5K. Nothing is out of whack or functioning abnormally in any way. No fault lights or anything either. Any opinions? I'm am ready to take it in for a check up at the dealer. It is annoying and worrying me. Thanks to anyone that can provide some insight.
 
Jo
#1707 of 1820
Re: mysterious knocking noise!!??!!?? [joryan] by hemorse
Jan 31, 2009 (1:57 pm)
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Replying to: joryan (Jan 31, 2009 1:35 pm)

I have a 2008 with the exact same issue. It seems to go away after the engine warms up, but is there upon initial start. I first thought something was loose, but that appaerntly is not the case. Mine is a fully loaded tech/sports package.
#1708 of 1820
Re: mysterious knocking noise!!??!!?? [hemorse] by joryan
Jan 31, 2009 (2:11 pm)
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Replying to: hemorse (Jan 31, 2009 1:57 pm)

It's good to know that it isn't some freak thing that only happens to me, like most occurences. Sorry you're having the same issue. Have you gotten it checked out at the dealer or anywhere? I have owned nearly 15 cars in my lifetime from new to 20 year old vehicles and never experienced this before. You have any clues to what it is? I can't stand it since a $40K vehicle should act appropriately all the time, especially when nearly brand new.
 
Jo
#1709 of 1820
Re: mysterious knocking noise!!??!!?? [joryan] by ahhaaa
Jan 31, 2009 (3:52 pm)
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Replying to: joryan (Jan 31, 2009 1:35 pm)

I have a 2007 MDX that did the same thing when newer. I noticed it 2-3 times, after a cold start in the morning, either immediately when driving, or within a couple blocks. It was subtle, like you said 4-5 knocks, and seemed similar frequency as a rotating tire, at speeds from 10-30 MPH. I ignored it, figuring it was a new drive train doing its thing and it would either get better or worse. It got better. I don't remember hearing it since. I'll check though.
#1710 of 1820
Re: mysterious knocking noise!!??!!?? [ahhaaa] by brahda808
Feb 02, 2009 (2:08 am)
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Replying to: ahhaaa (Jan 31, 2009 3:52 pm)

I got an 08 Sport/Tech. and it does the same when first used in the morning at around 20 mph. I haven't confirmed it with the dealer yet, but I am sure it has something to do with a system check with the anti lock brakes. My work car (Ford Crown Vic.) does the same. Our employer's mech. stated that is just the system checking the anti lock brakes.
#1711 of 1820
Re: mysterious knocking noise!!??!!?? [joryan] by upstatedoc
Feb 02, 2009 (10:19 am)
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Replying to: joryan (Jan 31, 2009 1:35 pm)

Pretty sure it's the ABS test. Haven't noticed it too much in the MDX, much more prevalent in the TL.
#1712 of 1820
09 MDX - noise from rear of car - Thud/Thump by smilsom
Feb 18, 2009 (5:50 am)
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I have a new 09 MDX Tech and I notice when I go over fairly sharp bumps or small potholes a distinct low frequency thunk or thump eminates from the rear of the car. I brought it in to service and nothing was loose, including the spare tire which I thought it could be at first. Then I took out another 09 MDX for a test ride and I heard the same exact noise. I believe I'm probably more sensitive than most to noises but I have a hard time believing that I'm the only one that finds this noise bothersome. I just got rid of an X5 and there were no noises like this. Acura client services called me and asked me to bring the vehicle back as I believe they have had multiple complaints about this issue. It sounds like a rear suspension issue to me but its not a one off problem with my vehicle. Anyone else notice this or have heard of this issue?
#1713 of 1820
Re: 09 MDX - noise from rear of car - Thud/Thump [smilsom] by upstatedoc
Feb 18, 2009 (6:36 am)
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Replying to: smilsom (Feb 18, 2009 5:50 am)

Search the discussion for rear suspension thud, there are multiple posts and multiple remedies, some work, some don't. I think it is inherent in the suspension.
#1714 of 1820
Driver Key Settings.... by smilsom
Mar 04, 2009 (2:09 pm)
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Anyone know if there's a way to not have all of the radio presets change from one Driver (key) to another? Would prefer all the radio settings to be the same for both keys.
 
Any help would be greatly appreciated.
 
Thanks
#1715 of 1820
new car tires by jdh
Mar 13, 2009 (6:36 am)
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Can anyone tell me if acura used bridgestone tires on the 2008 MDX vehicle as oem equipment. This is a used vehicle with 2700 miles and is the basic version of the car.
 
Thanks
 
JACK

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