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Author Topic:  Horrendous Rear Break Noise in Reverse - 2017 MKZ  (Read 8311 times)

Offline 14SHOCAR

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Horrendous Rear Break Noise in Reverse - 2017 MKZ
« on: December 18, 2016, 10:39:08 PM »
Well -- here we go. First documented problem with the MKZ. We got hit by some major snow this weekend. I was out driving my car to run a few local errands, and I parked the car in our indoor heated garage. A few hours later (after the snow had melted off my car + wheel wells), I leave to run a few more errands. When I put the car into reverse, I get the following squeaking noise:



I drove forward before taking the video to see if maybe the rear brakes were stuck somehow. It rolled forward perfectly, without any brake noise. I then put it in reverse and took the video. The feeling in the wheel was almost like the emergency brake was on -- but you can tell that when I let off the brake, It doesn't squeal. I put the car into park and looked at my rear brakes and they weren't rusted or didn't have any snow or ice on them.

It's was very strange. After I drove forward around the block, I didn't have any issues with the reverse squeal nor has it come back. Any ideas?????

« Last Edit: December 18, 2016, 10:42:20 PM by 14SHOCAR »
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Offline derfdog15

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Re: Horrendous Rear Break Noise in Reverse - 2017 MKZ
« Reply #1 on: December 18, 2016, 10:42:58 PM »
My mustang typically does this when things get cold/wet and it sits for a bit. No visible signs of rust, but a bit of squeel, which goes away after the brakes have heat cycles a bit.

My best guess is that temperature causes some weird expansion/compression somewhere, that is fixed after heat cycling. I have not noticed this type of thing on my SHO, but it has been a while since it has sat outside in any type of adverse condition.
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Offline 14SHOCAR

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Re: Horrendous Rear Break Noise in Reverse - 2017 MKZ
« Reply #2 on: December 18, 2016, 10:44:33 PM »
Quote from: derfdog15 on December 18, 2016, 10:42:58 PM
My best guess is that temperature causes some weird expansion/compression somewhere, that is fixed after heat cycling. I have not noticed this type of thing on my SHO, but it has been a while since it has sat outside in any type of adverse condition.

I know, I've had this issue too with previous cars. The vibration and sound was VERY loud -- louder than usual.
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Offline SHOdded

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Re: Horrendous Rear Break Noise in Reverse - 2017 MKZ
« Reply #3 on: December 18, 2016, 11:17:33 PM »
How many miles on the MKZ?  Are the brakes bedded in yet?  Probably slide pins need lubed.
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Offline 14SHOCAR

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Re: Horrendous Rear Break Noise in Reverse - 2017 MKZ
« Reply #4 on: December 18, 2016, 11:19:45 PM »
Quote from: SHOdded on December 18, 2016, 11:17:33 PM
How many miles on the MKZ?  Are the brakes bedded in yet?  Probably slide pins need lubed.

About 700 Miles. Good call on the pins.
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17 Lincoln MKZ 3.0T GTDI -To Tune, or Not To Tune -- THAT is the question.
15 Road Glide Special - CFR Exhaust, Powder Coated everything, DirtyAir Air ride
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LMS 93 V8 3Bar Tune, K&N Intake, LMS 160 t-stat, LMS pre-gapped plugs, Corsa Exhaust
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