New Rear Axle Assembly/ Rear Differential -- [SSM 49571 : Chatter/Shudder During Low Speed Turning Events]

[Mustanggt429]

I was experiencing that chatter/ shudder during sharp turns from a stop, especially to the right. I thought it sounded like the rear diff due to it coming from the rear and only really happening on very sharp turns where one wheel spins but the other doesn't. Brought it to the dealer and basically said I believe it is related to this TSB:

SSM 49571 - 2019-2021 Edge/Nautilus, 2020-2021 Escape/Corsair, 2021 Bronco Sport - AWD - Chatter/Shudder During Low Speed Turning Events Some 2019-2021 Edge/Nautilus, 2020-2021 Escape/Corsair, 2021 Bronco Sport vehicles equipped with all wheel drive (AWD) may exhibit chatter/shudder during low speed turning events due to fluid contamination. Drain and refill the rear drive unit (RDU), refer to Workshop Manual Section (WSM) 205-02. Drive for 8 km (5 miles) in stop and go conditions with right and left turns and re-evaluate. If the issue is still present, continue with WSM diagnostics. For claiming, use base (4000) causal part.

Was able to take a technician on a ride and he acknowledged the sound and said it sounded like it was coming from the rear. They changed the fluid which did not fix the problem and ordered a new rear axle assembly which includes a new rear differential. Was able to take the car home that day and took it back a week later for the replacement rear. It appears that this fixed the issue as I don't hear the shudder anymore.. for now.. I figured I would post my experience as this seems to be a common issue I have been seeing with mixed diagnosis and solutions.

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[jkeaton]

First I've heard of it so it must not be that common. Glad they took care of it for you.

 

[Mustanggt429]

2021 Base with 28k mi by the way

 

[toddedmond]

My 21 OBX started doing this a couple of months ago. Taking it to the dealer on 10/30. Glad I got an extended warranty, mine has 45000 miles. I have the exact same symptoms, grinding type noise, especially turning right from a stop.

 

[Mustanggt429]

My 21 OBX started doing this a couple of months ago. Taking it to the dealer on 10/30. Glad I got an extended warranty, mine has 45000 miles. I have the exact same symptoms, grinding type noise, especially turning right from a stop.

Just curious, what did they end up doing?

 

[toddedmond]

On the first visit, they installed a new vent tube and replaced the fluid in the rear differential.
The dealer acknowledged that it didn't fix the issue and they had Ford provide a new differential.
I had to wait a couple of weeks for them to get the part, but was able to drive it.
Once installed, everything works like new and is quiet.
Actually, changing the fluid made the noise worse, so the diff was toast.

 

[Mr.Grey]

Was this covered under your warranty? I’m currently have the same issue and have an extended warranty just for these type of issues. Just wanted to see if the dealership gave you any trouble.

 

[Gnomad]

If you are still under warranty and your vehicle is in the VIN range you really need to get this done. We are 3k on the wrong side of the warranty and the estimate came in at $582 out the door, and that's if the RDU is still servicable.

 

[Ford Motor Company]

Was this covered under your warranty? I’m currently have the same issue and have an extended warranty just for these type of issues. Just wanted to see if the dealership gave you any trouble.

Hey, Paul. I would like to look into this concern you're experiencing with your Bronco. Please send over a private message with your VIN and the name/location of your local Ford dealer.

 

[Gnomad]

had the oil changed, $170 later, part not available so I will be checking and changing on a regular basis, probably engine oil change frequency.

 

[toddedmond]

Sorry for the delayed response. Yes, it was covered under my extended warranty.

 

[Mustanggt429]

yes, same here covered under manufacturer warranty, no problems with dealer

 

[Sunny6595]

Hey, Paul. I would like to look into this concern you're experiencing with your Bronco. Please send over a private message with your VIN and the name/location of your local Ford dealer.

Hey Ford Motor Company, I’m at 38K and having the same issue.

 

[Ford Motor Company]

Hey Ford Motor Company, I’m at 38K and having the same issue.

Hi there, Eric. Go ahead and send us a private message with your VIN and the name and location of your Ford dealer, and I’ll look into your shudder concern.

 

[Sunny6595]

Hey Ford Motor Company, I’m at 38K and having the same issue.

Do you have an email to reply to?

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