Rubicon Chirps over Bumps

[JeepCares]

Update: I just had my JLUR in for the FCA Field Engineer to take a look at. He had the dealership techs remove, grease, and reinstall the brake backing plates on both front wheels as well as re-torque the axle nut. And the sound was gone! For 15 miles....

Now the chirp is back and coming from BOTH sides, not just driver. So after 4 trips to the dealer totaling about 10 days, my brand new 20 JLUR has only gotten worse. I called the service manager, who is trying to get in touch with the FCA Field Engineer. To my dealerships credit, they are trying, but even the FCA rep hasn't been able to fix it. I love this jeep, but I'm at the point where I am googling my lemon law rights...

Thanks for chiming in here @JeepCares . I'm sending you guys a private message.

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[Mikethurman]

Hi guys. My 2020 JLUR is making a chirping sound from the left side of the car. From in the drivers seat it sounds like front left, but could be rear.

The sound presents itself when going over bumps at all speeds below 50mph. If I hit a bump in the road: chirp. Drive on a dirt road: chirps in time with the bumps of the road. Drive with the left tires on a rumble strip: rapid chirping in time with the rumble strip. Its not rotational, the speed reflects the bump frequency, not the speed of the car.

This Jeep has been at the dealership 4 times for a total of 6 days now. The service department is very helpful, but can’t find it. They have replaced all sorts of things not suspension related and no luck. Today they tried to give the car back and I declined. They said the only sound they could find in the suspension is the tie rod pin... which is supposed to be loose and there is nothing they can do about it.

Do any of you guys and gals have thoughts?

All stock JLUR 3.6 manual with 8500mi

Any luck figuring this out? Mine is doing the same thing. Thanks

 

[Mikethurman]

Update: I just had my JLUR in for the FCA Field Engineer to take a look at. He had the dealership techs remove, grease, and reinstall the brake backing plates on both front wheels as well as re-torque the axle nut. And the sound was gone! For 15 miles....

Now the chirp is back and coming from BOTH sides, not just driver. So after 4 trips to the dealer totaling about 10 days, my brand new 20 JLUR has only gotten worse. I called the service manager, who is trying to get in touch with the FCA Field Engineer. To my dealerships credit, they are trying, but even the FCA rep hasn't been able to fix it. I love this jeep, but I'm at the point where I am googling my lemon law rights...

Thanks for chiming in here @JeepCares . I'm sending you guys a private message.

Any luck on this? Thanks

 

[coyle996]

Any luck on this? Thanks

it was the brake pad retaining hardware/shim thing

 

[Mikethurman]

it was the brake pad retaining hardware/shim thing

Did they replace it and fix the noise? Mine goes in wed. Thanks and I appreciate it.

 

[coyle996]

Did they replace it and fix the noise? Mine goes in wed. Thanks and I appreciate it.

i think they replaced the hardware and greased it. Yes. Noise all gone.

 

[zeebo56]

I changed brakes and had brake noise because of the brake pad retaining hardware. I think a part was sticking out rubbing the rotor since I noticed a groove in the rotor when I was inspecting. I bent the bracket a little and the noise went away. The design of the ones on the jeep is a little more complicated. So make sure to inspect those pieces when you put them on to make sure nothing is sticking out weird.

Glad you got it figured out and it was something small.

 

[somedude922]

Would you guys say it is a chirp or more like a metallic clink? I think I have this issue too. I will check my brakes. I can replicate it sometimes by rocking the vehicle, or by pressing the brake
pedal when its in my garage.

 

[coyle996]

Would you guys say it is a chirp or more like a metallic clink? I think I have this issue too. I will check my brakes. I can replicate it sometimes by rocking the vehicle, or by pressing the brake
pedal when its in my garage.

Id call it a chirp. I could always replicate by driving on rumble strips.

 

[Sarge80]

Id call it a chirp. I could always replicate by driving on rumble strips.

I have this exact noise and have narrowed it down to brakes as well. Is this something that needs to be replaced by dealer or is it just a matter greasing brake components? I'd rather not take to dealer if not necessary

 

[Mikethurman]

Would you guys say it is a chirp or more like a metallic clink? I think I have this issue too. I will check my brakes. I can replicate it sometimes by rocking the vehicle, or by pressing the brake
pedal when its in my garage.

I would say bring it in of it's under warranty. My guy here fixed it right away and knew what it was just based off this thread and what jeep had in their system. My chirping is still gone with no issues to report.

 

[DanW]

Hi guys. My 2020 JLUR is making a chirping sound from the left side of the car. From in the drivers seat it sounds like front left, but could be rear.

The sound presents itself when going over bumps at all speeds below 50mph. If I hit a bump in the road: chirp. Drive on a dirt road: chirps in time with the bumps of the road. Drive with the left tires on a rumble strip: rapid chirping in time with the rumble strip. Its not rotational, the speed reflects the bump frequency, not the speed of the car.

This Jeep has been at the dealership 4 times for a total of 6 days now. The service department is very helpful, but can’t find it. They have replaced all sorts of things not suspension related and no luck. Today they tried to give the car back and I declined. They said the only sound they could find in the suspension is the tie rod pin... which is supposed to be loose and there is nothing they can do about it.

Do any of you guys and gals have thoughts?

All stock JLUR 3.6 manual with 8500mi

Do you have a GoPro or some kind of action cam with a microphone? You can get some pretty cheap ones on Amazon. Get a clamp mount, too. Then place it at different spots, drive around, and compare the sound in the videos, and you should be able to narrow it down pretty quickly. It'd save you some time. It would also help to determine if it is not a loose or improperly torqued bolt, and maybe something else, like brakes or whatever.

I've had a loose rear control arm bolt, but it didn't make a chirp, but rather a more metalic loud click. But mechanical things are weird and there are lots of variables that could result in different sounds. It was VERY hard to figure out whether it was front or rear.

 

[harmhammer]

I would say bring it in of it's under warranty. My guy here fixed it right away and knew what it was just based off this thread and what jeep had in their system. My chirping is still gone with no issues to report.

Did they happen to reference a Service Bulletin number when your guy looked it up in computer? Thank you!

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