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Old 09-11-2012, 02:00 PM   #1
Thermo
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Default 2012 Impreza 2.0i Handbrake Poll

Just a quick question for all the Impreza 2.0i owners.

If you could perform a quick test: Drive the vehicle at any speed, 5 mph (in a parking lot) is sufficient, and pull and release the handbrake (keep the button on the lever depressed). It doesn't have to be pulled very strongly. Do you hear a bang or thud when the brake is engaged?

I haven't taken the rear brakes apart to look at them yet, since the car is brand new and under warranty, but the dealer is telling me that this is normal and all Impreza 2.0i's do this.

Thanks.
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Old 09-11-2012, 02:24 PM   #2
CopperTopNWOR
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You shouldn't be pulling the handbrake while the car is in motion unless it is an emergency.

That being said, when I have pulled it on my WRX and not been at a complete stop there is a sound from the rear end.

Last edited by CopperTopNWOR; 09-11-2012 at 02:45 PM.
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Old 09-11-2012, 03:18 PM   #3
Thermo
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Quote:
Originally Posted by CopperTopNWOR View Post
You shouldn't be pulling the handbrake while the car is in motion unless it is an emergency.
From a technical standpoint, I disagree. Barring any sort of extreme handbrake engagement, there is no detrimental effect to the braking system or drivetrain by applying the handbrake while in motion.

I would agree that there is no point to doing it (unless you are testing, performing maintenance, or like you said, in an emergency), since the braking effect is very low compared with the vehicle's main braking system. In fact, the owner's manual states that the handbrake should be engaged at approx. 22 mph to break-in the brake shoes.

In my WRX, there is no sound when the handbrake is engaged while the vehicle is moving. In any case, thanks for your response. I'm trying to determine a trend here, so if a significant proportion of Impreza's do this, then it may just be a benign effect of the system's design.
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Old 09-12-2012, 02:50 PM   #4
Geethirtyfour
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I get a squeal on my WRX when I pull hard, like the pads are worn down to the wear sensors which can't be true. I did the break in and I have only 500 miles on the car. No bang or thud, sorry.
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Old 09-14-2012, 09:39 AM   #5
Thermo
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Thanks Geethirtyfour. It's starting to look like most of the Subaru's with this setup have some sort of clunking. I still have to take a look at it this weekend, but it looks like a rather basic setup with rather low tolerances, so things shift about somewhat.

Last edited by Thermo; 09-14-2012 at 09:49 AM.
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Old 09-21-2012, 10:02 PM   #6
RememberMeJoeB
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yea i did that by accident terrible noises ensued and it scared me enough to never do it again. I used to be able to spin the spec-v with the handbrake i miss my spec-v.
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Old 09-30-2012, 06:01 PM   #7
ans2k
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yea, i hear it in my 2012 sport imp
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Old 09-30-2012, 06:55 PM   #8
RoadKillDMD
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Quote:
Originally Posted by Thermo
From a technical standpoint, I disagree. Barring any sort of extreme handbrake engagement, there is no detrimental effect to the braking system or drivetrain by applying the handbrake while in motion.
Elaborate please.
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Old 09-30-2012, 10:39 PM   #9
chazly413
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He's getting at the fact that it's fine to slow down with the e-brake if you're not locking up the rear tires (partial engagement, if full engagement is the e-brake fully yanked while parked), although you won't be able to stop for **** at any kind of speed using just the e-brake.

I have done this to stop my car from rolling down a hill without the engine on and I have never heard any such thud.

Last edited by chazly413; 09-30-2012 at 11:12 PM. Reason: unnecessary comma
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Old 10-01-2012, 09:04 AM   #10
Thermo
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Quote:
Originally Posted by RoadKillDMD View Post
Elaborate please.
The proper way to go about this is to ask how it would damage the vehicle, and you'll find that you won't have an answer.

If you're looking for the short and sweet answer, then chazly had it.
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Old 10-01-2012, 11:44 AM   #11
Big-E
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Quote:
Originally Posted by Thermo View Post
From a technical standpoint, I disagree. Barring any sort of extreme handbrake engagement, there is no detrimental effect to the braking system or drivetrain by applying the handbrake while in motion.

I would agree that there is no point to doing it (unless you are testing, performing maintenance, or like you said, in an emergency), since the braking effect is very low compared with the vehicle's main braking system. In fact, the owner's manual states that the handbrake should be engaged at approx. 22 mph to break-in the brake shoes.

In my WRX, there is no sound when the handbrake is engaged while the vehicle is moving. In any case, thanks for your response. I'm trying to determine a trend here, so if a significant proportion of Impreza's do this, then it may just be a benign effect of the system's design.
You must realize that this means to engage as in to begin to grab and not an all-out full-engagement to lock. These are two different types of 'engagement'.

To clarify (per Thermo below), I did read this post. I chose this sentence to emphasize because at its face, some may not understand that there is a fundamental difference between "extreme handbrake engagement" and "the handbrake should be engaged"; extreme versus non-extreme engagement (or to lock), which is not the case.

Last edited by Big-E; 10-02-2012 at 04:26 PM. Reason: Additional Content
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Old 10-02-2012, 04:15 PM   #12
Thermo
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I think you need to re-read the post (as well as the other posts) and you'll see that we already covered that fact. Even the statement you quoted in your post contains this information: "Barring any sort of extreme handbrake engagement, there is no detrimental ..." (second sentence).

However, in restating what has been stated, you are correct nonetheless.

Also, I would argue that, if you are trying to break-in the shoe lining, then you would prefer moderate engagement over light ("begin-to-grab") engagement. Of course light/moderate/heavy/severe/etc. are all terms that are subject to interpretation. :-)
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