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2014 Q5 squeaking electronic parking brake

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2014 Q5 squeaking electronic parking brake

 
Old 04-27-2019, 07:00 AM
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Default 2014 Q5 squeaking electronic parking brake

Hi All

I have a very irritating squeaking electronic parking brake when engaging. This is a very loud squeak when activating and can be heard

inside the car with all the windows closed. This is on the left rear brake only. I have removed the caliber with the electric motor/gearbox but cannot see any obvious wear or tear.

Any help on this would be great.
Cheers
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Old 04-27-2019, 02:56 PM
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If it was mine I'd remove the motor from the caliper and spray some decent lube onto the shaft that comes out of the motor assembly.Be real generous.Chances are you've got some dirt/corrosion in there and this could do away with your issue.
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Old 04-27-2019, 08:27 PM
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Originally Posted by KlausG View Post
Hi All

I have a very irritating squeaking electronic parking brake when engaging. This is a very loud squeak when activating and can be heard

inside the car with all the windows closed. This is on the left rear brake only. I have removed the caliber with the electric motor/gearbox but cannot see any obvious wear or tear.

Any help on this would be great.
Cheers
I have that too. Have had it since not long after I bought the 2+ year old car with 29k miles on it. Always believed it was normal.
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Old 04-27-2019, 11:33 PM
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Hi MurrayA4

I have done this with no change to the squeaking.
My plan is as follows:
Remove the caliper with the motor assembly. Then machine a piece of wood with the correct thickness and place between the piston and
the end stop. Activate the park brake.
This way I can then determine if the noise is from the motor drive or the brake pads being exposed to the very large clamping forces.

Watch this space...
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Old 05-15-2019, 04:09 AM
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Hi

Update:

Removed caliper.
Inserted wooden block to act as pads and rotor for spacing. Engaged park brake and still squeaking noise.
Removed electric motor and sprayed heavily with ACF50 and let the lube run into the gears of the gearbox assembly of the electric motor.
After retracting the brake piston via VCDS software the squeaking was gone.
Put everything back into place and no squeaking for a few weeks.
The squeaking has however slowly started become audible again over time.
I can only think the belt drive inside the electric motor assembly is the culprit.
Looking at replacing this component in the near future.
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Old 05-15-2019, 01:38 PM
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There's a "drive belt" in there ? I give up there !
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Old 05-15-2019, 10:31 PM
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Hi All

Here is a useful bit of info....
Attached Files
File Type: pdf
SSP_346 electro handbrake.pdf (1.48 MB, 10 views)
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Old 05-16-2019, 01:05 PM
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KlausG thank you.All I can say is oh my god ! Fortunately mine has been fine, use it every time I park.Generally I'm a fan of EPBrakes Up here in Canada cables freezing and rotting are a pain.But a toothed drive belt in the motor assembly kind of scares me.I just checked and ECS have a replacement (obviously sourced from a certain Oriental country) for 50 bucks so no big deal.
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