Good Sam Club Open Roads Forum: 2021 Chassis Class A Motorhomes
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 > 2021 Chassis Class A Motorhomes

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ClydeNBonnie

California

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Posted: 07/18/21 06:20pm Link  |  Quote  |  Print  |  Notify Moderator

We bought a new 2021 Newmar Bay Star w/ the Ford F53 chassis. Immediately ABS and traction control lights came on. Spent a month in Ford service department. Front left wheel speed sensor replaced. Did not fix problem. ECBM replaced. Did not fix problem. Wire harness overlay replaced. Did not fix problem. Left front tone ring assembly replaced. Fixed problem for 200 miles. Spent 12 days in another Ford Service Department. Wire harness overlay replaced again. So far, ABS and TCS lights have stayed off. Just spent 16 days in Ford service department for rear axle safety recall. At the suggestion of someone in another forum, we filled out a complaint form on the NHTSA website. I guess if enough people do, the NHTSA might investigate and a recall might result.

ClydeNBonnie

California

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Posted: 07/18/21 06:33pm Link  |  Quote  |  Print  |  Notify Moderator

One footnote. This Service Bulletin was issued in or around Nov 2020:

“SSM 49315 - 2020 F-53 Motorhome Chassis - Bent Or Damaged Rear Axle Tone Ring(s) With DTCs C0037 And/Or C0038 - 16,000-22,000 Lbs. GVW Vehicles
Some 2020 F-53 Motorhome Chassis 16,000-22,000 lbs. gross vehicle weight (GVW) vehicles may exhibit an anti-lock brake system (ABS) light on with diagnostic trouble code (DTC) C0037 and/or C0038. This may be due to a bent or damaged rear axle tone ring. Inspect the tone ring teeth on the affected rear wheel and replace the tone ring if damage is present. It is recommended to inspect the service tone ring before installation to make sure no damage has occurred in shipment. The tone ring is susceptible to damage during the ring to rotor installation as well as installing the hub and rotor assembly onto the axle housing. Use a suitable jack to aid in the installation of the assembly to prevent any contact with the tone ring during reassembly.”

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