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Noise when auto hold disengages

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Old Nov 8th, 2018, 14:43   #11
taylora
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Manual says 5-10 minutes...not sure why the variation.
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Old Nov 8th, 2018, 14:47   #12
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Not sure that's correct.

Autohold maintains the foot brake pressure when you come to a stop, releasing the held brake pressure when you press the accelerator - using servo pumps and vacuum valves. It does not engage the electric parking brake unless the car has been stationary for a while - seven mins?

The parking brake is indeed electric but it's separate from autohold and only work on the rear wheels. Autohold uses the brake servo pressure and works on all four. Two separate systems for safety.
Read my post again. It is clear and correct in the most part but you may be correct in that it uses the same system as hill hold assist, but without the 2 second timer release. Neither the hanbrake nor the other system make any significant noise on mine apart from the pads releasing.
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Last edited by Quacker; Nov 8th, 2018 at 14:55.
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Old Nov 8th, 2018, 17:33   #13
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Manual says 5-10 minutes...not sure why the variation.
Just checked the manual for my car and it says ~5 mins.
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Old Nov 8th, 2018, 19:54   #14
GTA SOL
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The issue is when pulling away from a temporary stop so Iím not sure if this is auto hold or hill start.

Spoke to the dealer today and it seems they do think there is an issue after testing other XC60s in the dealership and not replicating the same noise. They have therefore raised it with Volvo abd weíll have to see what happens.

I disagree with the poster who said that itís something that happens on all Ďauto holdí. Iíve had 2 VW CCs, both with auto hold, neither of which made this noise when pulling away with auto hold. I know they are different manufacturers but Iíd have thought the principle of auto hold is the same. The Service Manager at the dealership said he has a v90 which doesnít make this noise.

More waiting while they try and sort it out. Think the car has spent almost as much time at the dealership as in my position since I bought. Starting to get a little disheartened and yearning for my CC back.
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Old Nov 8th, 2018, 19:57   #15
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No noise from my XC90 either.
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Old Nov 8th, 2018, 22:17   #16
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Originally Posted by GTA SOL View Post
The issue is when pulling away from a temporary stop so Iím not sure if this is auto hold or hill start.

Spoke to the dealer today and it seems they do think there is an issue after testing other XC60s in the dealership and not replicating the same noise. They have therefore raised it with Volvo abd weíll have to see what happens.

I disagree with the poster who said that itís something that happens on all Ďauto holdí. Iíve had 2 VW CCs, both with auto hold, neither of which made this noise when pulling away with auto hold. I know they are different manufacturers but Iíd have thought the principle of auto hold is the same. The Service Manager at the dealership said he has a v90 which doesnít make this noise.

More waiting while they try and sort it out. Think the car has spent almost as much time at the dealership as in my position since I bought. Starting to get a little disheartened and yearning for my CC back.
If you aren't on an uphill start when it happens it is the auto handbrake feature. This can be disabled with the little button immediately behind and part of the parking brake switch. There is a tiny green light that shows when it is switched on. Switch it off, by pressing it briefly for the light to extinguish and all your troubles 'should' go away.*


*This information is worth exactly what you paid for it.
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Old Nov 8th, 2018, 23:10   #17
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If you aren't on an uphill start when it happens it is the auto handbrake feature. This can be disabled with the little button immediately behind and part of the parking brake switch. There is a tiny green light that shows when it is switched on. Switch it off, by pressing it briefly for the light to extinguish and all your troubles 'should' go away.*


*This information is worth exactly what you paid for it.
The issue is I like the auto hold function and donít want to switch it off. In addition I donít think I should pay £40k for a car and to then have to switch off a function to stop an annoying noise that should not be happening. Just my opinion.
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Old Nov 8th, 2018, 23:15   #18
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Cannot say there is any noticeable noise from mine, XC60 MY19 although I do not use it that often,
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Old Nov 8th, 2018, 23:51   #19
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Cannot say there is any noticeable noise from mine, XC60 MY19 although I do not use it that often,
Likewise, no annoying noise just the very slight noise you would expect from the release of the brakes.
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Old Nov 9th, 2018, 08:34   #20
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I have this feature on both of our cars and I can confirm neither makes a noise when disengaged
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