Drivetrain/Rear Axle Whine

[Emmitt]

I have a 2022 Bronco 4 door Badsquatch auto with the 4.7 rear end. I get what sounds like a rear axle whine that starts at about 10 mph and get progressively worse as my speed increases. I get the noise whether I am on dirt or paved roads. I can also put it in neutral and start coasting and the whine is still there which leads me to believe it is from the rear axle pinon/gear assembly. Does anyone else have this issue and is it normal with the 4.7 rear end? I attached a video and it is much louder than what the phone video picks up. The whine change you hear in the video at around 12 seconds is when I am in and out of the accelerator pedal. I have 20k miles and the noise has been there pretty much since new. My dealer indicates it is "normal" but I am not convinced. Thanks.

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[Ford Motor Company]

I have a 2022 Bronco 4 door Badsquatch auto with the 4.7 rear end. I get what sounds like a rear axle whine that starts at about 10 mph and get progressively worse as my speed increases. I get the noise whether I am on dirt or paved roads. I can also put it in neutral and start coasting and the whine is still there which leads me to believe it is from the rear axle pinon/gear assembly. Does anyone else have this issue and is it normal with the 4.7 rear end? I attached a video and it is much louder than what the phone video picks up. The whine change you hear in the video at around 12 seconds is when I am in and out of the accelerator pedal. I have 20k miles and the noise has been there pretty much since new. My dealer indicates it is "normal" but I am not convinced. Thanks.

Hi Kevin. Can you send us a DM with your VIN and dealership info? I can look into this for you.

 

[Bronco15]

I have a 2022 Bronco 4 door Badsquatch auto with the 4.7 rear end. I get what sounds like a rear axle whine that starts at about 10 mph and get progressively worse as my speed increases. I get the noise whether I am on dirt or paved roads. I can also put it in neutral and start coasting and the whine is still there which leads me to believe it is from the rear axle pinon/gear assembly. Does anyone else have this issue and is it normal with the 4.7 rear end? I attached a video and it is much louder than what the phone video picks up. The whine change you hear in the video at around 12 seconds is when I am in and out of the accelerator pedal. I have 20k miles and the noise has been there pretty much since new. My dealer indicates it is "normal" but I am not convinced. Thanks.

Have you ever found out the reason for your issue?

 

[Emmitt]

Have you ever found out the reason for your issue?

Yes - shaft bearings in the rear axle. They replaced the rear axle last week under warranty and that resolved the issue.

 

[Bronco15]

Yes - shaft bearings in the rear axle. They replaced the rear axle last week under warranty and that resolved the issue.

Great news! I am experiencing a similar whining noise, most noticeable between 50-60 mph when gently pressing the pedal. It seems to reduce when shifting from 4A to 2A. However, the dealer insists that it's normal

 

[Emmitt]

Great news! I am experiencing a similar whining noise, most noticeable between 50-60 mph when gently pressing the pedal. It seems to reduce when shifting from 4A to 2A. However, the dealer insists that it's normal

Mine was most prominent at that speed also. I don't hear any drivetrain noise now and there is a night and day difference. Good luck and push your dealer to do the right thing.

 

[Crazy Offroader]

Yes - shaft bearings in the rear axle. They replaced the rear axle last week under warranty and that resolved the issue.

My 22 badlands SAS is getting the rear end replaced Rt now( Joe cooper ford Edmond Oklahoma)
I had the whine and almost a dust cover rubbing the rotor sound. Also from pinion leaking bad with a driveline phasing feel.
wonder how long the dealer will have my bronco ?

 

[Emmitt]

My 22 badlands SAS is getting the rear end replaced Rt now( Joe cooper ford Edmond Oklahoma)
I had the whine and almost a dust cover rubbing the rotor sound. Also from pinion leaking bad with a driveline phasing feel.
wonder how long the dealer will have my bronco ?

It was on back order and right before the strike. It only took a few weeks to get my new axle in and all is still running great!

 

[Crazy Offroader]

It was on back order and right before the strike. It only took a few weeks to get my new axle in and all is still running great!

My unit hase been at dealer now going on 2 weeks… no parts at any dealer or pdc.. getting concerning at this juncture

 

[KT_bronco]

I just developed this today after having my fluids changed for the transfer case and differentials at the dealer. Anyone have an idea what they could have done incorrectly that would result in this type of noise?

 

[CarbonSteel]

I just developed this today after having my fluids changed for the transfer case and differentials at the dealer. Anyone have an idea what they could have done incorrectly that would result in this type of noise?

Low fluid level could cause it. I would take it back.

 

[Ford Motor Company]

I just developed this today after having my fluids changed for the transfer case and differentials at the dealer. Anyone have an idea what they could have done incorrectly that would result in this type of noise?

Hi there! Will you send us a message with your VIN and your local Ford dealer? I can look into things on my end.

 

[KT_bronco]

So I took it back and they tried diagnosing it, they heard the whine and agreed there is an issue, they also noticed in reverse it was making clicking noises in reverse.

Service advisor who has always helped me out said it would be covered under the 60k powertrain warranty which should speed things up.

Now I have to wait till they get freed up working on other cars and then the parts waiting game.

I did mention this thread and the axel shaft bearing, he said he would find out once he breaks into it. sigh.

Really bizarre this cropped up right after the fluid changes.

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