2018 NX Fsport Noise! - ClubLexus - Lexus Forum Discussion

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2018 NX Fsport Noise!

Old 01-02-19, 12:53 PM
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Nmagnum
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Default 2018 NX Fsport Noise!

This has been on going since about 3k miles. We got the car in April of last year, new. It currently has a total of 7,000 miles on it. Have any of you experienced this sound in the video ? Itís a very audible metallic clicking sound when brakes are applied. We also had thudding sounds as well while coming to a stop at a light.
https://drive.google.com/file/d/1kKv...w?usp=drivesdk

Last edited by Nmagnum; 01-02-19 at 12:59 PM. Reason: Add link
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Old 01-02-19, 02:01 PM
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Could be the brake hold and or auto parking brake.

Have you asked the dealer?
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Old 01-02-19, 02:26 PM
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Itís currenrly at the dealer for the third time. Except they canít duplicate it. I provided them with the video.
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Old 01-02-19, 09:36 PM
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Yep! My 2017 does it as well. I had in in 3 times, until they gave me an answer. In the end, they told me our NX has floating calipers and the noise is the brake pads moving back and forth in the caliper. It makes sense, but itís BS. They wonít do anything about it, except maybe grease the pads and it will start again after a couple thousand miles.

They refuse to acknowledge these noises. I opened a case with Lexus corporate who told me that it isnít a defect, but rather a ďcharacteristicĒ of the vehicle. Whatever, this is the most clickety, vibrating, noisiest vehicle Iíve ever owned. I expected more from Lexus.
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Old 01-03-19, 03:26 PM
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ALL modern cars have floating calipers. ALL. Disk brake=floating caliper.

ONE click is normal. Yes, it is. Now, TWO clicks - not so much. So not sure. But indeed, one is perfectly fine going either direction. Also, when you start the car and take off, there will be clink coming from about where your left knee is. That is also normal, that's brake actuator resetting itself.
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Old 01-03-19, 03:42 PM
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I believe that they all have floating calipers, but I think itís weird that the NX is the first vehicle that Iíve ever heard the noise in. Do you know what that happens?

Also, as the OP shows in the videos....my NX originally only had one click and then now I can hear four separate clicks. I can hear each caliper click at different times.
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Old 01-03-19, 07:25 PM
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Originally Posted by ukrkoz View Post
ALL modern cars have floating calipers. ALL. Disk brake=floating caliper.

ONE click is normal. Yes, it is. Now, TWO clicks - not so much. So not sure. But indeed, one is perfectly fine going either direction. Also, when you start the car and take off, there will be clink coming from about where your left knee is. That is also normal, that's brake actuator resetting itself.
Almost all cars use floating calipers, but not all... performance BMW and MB, and other performance cars, use fixed style calipers. In these cars calipers are attached to the knuckles directly and do not float.

Last edited by Lex2000TL; 01-03-19 at 07:29 PM.
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Old 01-03-19, 07:34 PM
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Check to see if all brake pad retaining clips on the pad "ears" are oriented so that they compress (and click upon contact with the caliper) while braking in reverse and not while braking going forward. I encountered this annoying problem some time last year and discovered that my rear pads were oriented incorrectly. With the way your vehicle clicks in both forward and reverse, it might be possible that some pad "ear" springs are oriented correctly while the others aren't. Hope this helps.

EDIT: I think they're also called anti-rattle springs
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Old 01-03-19, 08:13 PM
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I don't think this is normal at all. Ask to drive another NX to see if it acts the same. Good luck.

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Old 01-04-19, 03:15 PM
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I watched video and saw TWO consecutive clicks in Reverse. That should not be the case, unless one side clicks ahead of the other.

I'll correct myself. All NORMAL cars. Performance vehicles always had weird stuff.

On a floating caliper setup, the piston is on only one side of the caliper and the caliper itself slides slightly side to side on pins. Fixed caliper setups have pistons on both sides of the caliper and the caliper does not slide at all. Fixed caliper setups provide more even brake pad wear than floating calipers and also provide more consistent pressure between the two sides of the caliper because this setup does not rely on the caliper's sliding.

Fixed caliper designs, of course, require at least two pistons; one for each side.
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Old 01-04-19, 04:41 PM
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Similar to my G37. Piston was on one side and it clicked backing out of the garage every morning. On the plus side the single piston design makes it easy to replace the brakes.
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