Clunk from the rear of the car
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This is a discussion on Clunk from the rear of the car within the Everyday Impreza Talk forums, part of the Community - Meet other Enthusiasts category; I've got a 2013 5-door hatch, all stock. When I leave my driveway in the morning, I back out of ...

  1. #1
    Registered User XRedJar's Avatar
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    Clunk from the rear of the car

    I've got a 2013 5-door hatch, all stock.

    When I leave my driveway in the morning, I back out of my space and turn hard left. When I start going forward, after rolling a few feet, I hear a clunk from the rear of the car.

    I'm assuming that maybe the rear diff "unlocks" when you back up and turn sharply, and then "locks" back up after rolling forward.

    "locks" may not be the most correct word, but hope it gets the point across.

    I'm not overly concerned, just wondering if it's a normal thing that others are aware of as well.
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    Registered User maus's Avatar
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    I believe what you are hearing is the ABS self testing.
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    Luke Skywalker Mikie13's Avatar
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    The differentials are very chattery. Under full lock turning, you're gonna hear some clunking going around, especially slowly. This is due to the smaller turning radius of the inside wheels compared to the outside wheels, so obviously there is gonna be minor "strain" on diffs.
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    Registered User XRedJar's Avatar
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    Quote Originally Posted by Mikie13 View Post
    The differentials are very chattery. Under full lock turning, you're gonna hear some clunking going around, especially slowly. This is due to the smaller turning radius of the inside wheels compared to the outside wheels, so obviously there is gonna be minor "strain" on diffs.
    Thats sort of what I figured, just that I don't hear any noise while turning....only after turning while backing up, then I hear the noise after have started going forward.

    It's not a harsh clunk, just noticable.
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  6. #5
    Registered User maus's Avatar
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    Quote Originally Posted by XRedJar View Post
    Thats sort of what I figured, just that I don't hear any noise while turning....only after turning while backing up, then I hear the noise after have started going forward.

    It's not a harsh clunk, just noticable.
    Its the ABS system
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    I hear the exact same noise coming from my 2013 wrx 5 door hatch. Right after putting it into first gear and rolling forward a little bit the clunking sound can be heard. It only happens when I first start driving the car after warming it up.

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    Registered User mcdbrendan's Avatar
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    This happens to my '09 sedan also

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    Luke Skywalker Mikie13's Avatar
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    Quote Originally Posted by maus View Post
    Its the ABS system
    Explain.
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    Registered User maus's Avatar
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    Quote Originally Posted by Mikie13 View Post
    Explain.
    I know on the newer cars when you first start them up the ABS system performs a self check. The clunk you hear is the ABS system. You only hear it after the car has been sitting. I guarantee you thats what OP is hearing.
    Last edited by maus; 04-08-2013 at 04:33 PM.
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    Registered User XRedJar's Avatar
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    Quote Originally Posted by maus View Post
    I know on the newer cars when you first start them up the ABS system performs a self check. The clunk you hear is the ABS system. You only here it after the car has been sitting. I guarantee you thats what OP is hearing.
    Thanks much.
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  12. #11
    Registered User dan5505's Avatar
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    Same noise here. Could this have anything to do with the hill assist?

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    Registered User maus's Avatar
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    Quote Originally Posted by dan5505 View Post
    Same noise here. Could this have anything to do with the hill assist?
    No its the ABS Cycling. This is completely normal.
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  14. #13
    KHP
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    Quote Originally Posted by maus View Post
    No its the ABS Cycling. This is completely normal.
    +1

    I've talked to a Subaru tech regarding this "clunk" sound. Maus is correct regarding ABS self test after rolling a few feet forward after the car has been sitting for a while.

    I know my car 2011 WRX, my friends 2013 WRX, and my friends wife's 2010 Impreza all does this. Completely normal.
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  15. #14
    Registered User Feels Goodman's Avatar
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    I hear the same noise too, i'm glad to hear it's a normal.

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    Quote Originally Posted by KHP View Post
    +1

    I've talked to a Subaru tech regarding this "clunk" sound. Maus is correct regarding ABS self test after rolling a few feet forward after the car has been sitting for a while.

    I know my car 2011 WRX, my friends 2013 WRX, and my friends wife's 2010 Impreza all does this. Completely normal.
    so if ABS is making that noise for self check then it will make noise when it is really used for intended purpose
    why then it never make cling in wet weather

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