RoadVitals

2020 Forest River Dynamax Problems

Owner-reported complaints filed with NHTSA, grouped by component

Data refreshed

Owner complaintsComplaints are reports submitted to NHTSA by owners and drivers. NHTSA does not verify most reports before publishing them, and a complaint does not establish that a defect exists. Volume is influenced by how many of a vehicle were sold, how long it has been on the road, and how much attention an issue has received.
1
Latest Jul 2, 2026
Components namedHow many of our component categories appear on at least one report for this model year. One report can name several.
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Crash or fire reportedComplaints whose submitter recorded that a crash or a fire occurred. These are the reporter's own answers on the NHTSA form, not verified findings.
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What this page shows

Everything below is an owner-reported complaint submitted to NHTSA about the 2020 Forest River Dynamax, grouped by the component NHTSA recorded on the report. These are not confirmed defects, and they are not recalls. NHTSA does not verify most reports before publishing them, and a category with more reports in it is not evidence that a part is defective.

Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.

Reports by component

Ranked by how many owner reports name each component category

  • Tires & wheels1100.0%

Percentages are of component mentions. A single complaint can name more than one component, so these do not sum to the total complaint count.

Each component in detail

What the reports in each category say, in the owners' own words

Tires & wheels

Reports naming tires, wheels, hubs, or the tire-pressure monitoring system.

1
report

From owner reports, verbatim

The contact owns a 2020 Forest River Dynamax Isata 3 built on a 2018 Mercedes-Benz Sprinter 3500 chassis. The contact stated that the TPMS was malfunctioning and failed to provide accurate readings for all tires, with the alarm sounding. The vehicle was taken to the dealer, but the cause of the failure could not be determined. The contact became aware of Forest River Technical Service Bulletin: 55-1097. The contact stated that the manufacturer had previously failed to disclose that there was a TSB related to the failure. The vehicle was taken to the dealer, who advised the contact that the VIN was not included in a recall associated with the failure. Additionally, the dealer informed the contact that the manufacturer had advised that the vehicle was not eligible for the TSB repair. The contact was advised that the repair was previously performed by the Mercedes-Benz manufacturer. The contact called a Mercedes-Benz dealer, who advised that the TSB repair was not completed by Mercedes-Benz because it was Forest River's responsibility. The contact returned to the Forest River dealer, who informed the contact that the manufacturer had approved the repair, but the wheel band sensors provided by the manufacturer were incompatible with the Mercedes-Benz Chassis. The dealer then took the RV to a tire repair shop, which had the same Forest River parts and confirmed that the parts were incompatible. The vehicle was taken to Laird Noller RV Supercenter (5332 NW 24th St, Topeka, KS 66618), who advised the contact that the compatible parts were available, but Forest River had denied coverage for the TPMS and new wheel band sensor installation. The manufacturer was not contacted. The failure mileage was approximately 1.

NHTSA ID 11747901 · filed Jul 2, 2026

Too few reports in this category for a page of its own — they appear in the full complaint list.

Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.

Elsewhere on this vehicle

Data sources

Data on this page last refreshed .