Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
Limited mileage data: 3 of 5 reports include usable mileage. There isn’t enough coverage to show a useful chart.
NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.
What to inspect
Issues worth paying extra attention to based on owner reports.
Electrical System. Review the 2 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
Power Train. Review the 2 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
Service Brakes. Review the 2 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
0 crash reports1 fire reports0 injury reports
What owners actually said
5 reports
Mileage unknown · May 19, 2025
Service Brakes
RAM recall #C4B, affecting ABS and Electronic Braking. Recall in effect, but no parts available for fix. This recall has been in effect for a few years. This vehicle is a 20000 lb motorhome, and my family's safety is being compromised by RAM dragging their feet and delaying the supply of replacement parts. I've contacted two RAM…
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RAM recall #C4B, affecting ABS and Electronic Braking. Recall in effect, but no parts available for fix. This recall has been in effect for a few years. This vehicle is a 20000 lb motorhome, and my family's safety is being compromised by RAM dragging their feet and delaying the supply of replacement parts. I've contacted two RAM dealers and RAM Customer Service to no avail.
NHTSA ODI #11661997
Mileage unknown · Apr 4, 2022
Fuel/propulsion SystemPower Train
Traveling on a busy interstate, traffic limited to one lane because of construction. Traffic stopped, instructed by law enforcement to turn off vehicle to wait. Shortly after, traffic started moving but our vehicle would not start. After stopping traffic for about 15 minutes the vehicle finally started. Incident repeated at a…
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Traveling on a busy interstate, traffic limited to one lane because of construction. Traffic stopped, instructed by law enforcement to turn off vehicle to wait. Shortly after, traffic started moving but our vehicle would not start. After stopping traffic for about 15 minutes the vehicle finally started. Incident repeated at a gas station, stopped for gas, filled up, when complete would not start, once again after 15 minute wait it started. Dealer unable to get the problem to repeat. Onboard diagnostic computers didn't record the fault. Mercedes Benz corporate will not do anything to assist getting the issue fixed until repeated by the dealer. Researched online and found video of someone else with exact problem and solution. Many comments of others with same issue. We have owned this vehicle for about 500 of its 10000 miles.
NHTSA ODI #11459629
12,000 miles · Oct 19, 2020
Wheels
I HAVE HAD 2 FRONT WHEEL SIMULATORS SEPARATE FROM THE WHEELS WHILE OPERATING SAID VEHICLE AT HIGHWAY SPEEDS. PRIOR TO EACH TRIP I PERSONALLY INSPECTED THE WHEEL SIMULATORS FOR PROPER ATTACHMENT AND SECURITY. MY CONCERN IS THE HAZARD THESE FAILURES TO OTHER MOTORISTS ON THE HIGHWAY AS WELL AS THE EXPENSE OF REPLACEMENT. DEALER…
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I HAVE HAD 2 FRONT WHEEL SIMULATORS SEPARATE FROM THE WHEELS WHILE OPERATING SAID VEHICLE AT HIGHWAY SPEEDS. PRIOR TO EACH TRIP I PERSONALLY INSPECTED THE WHEEL SIMULATORS FOR PROPER ATTACHMENT AND SECURITY. MY CONCERN IS THE HAZARD THESE FAILURES TO OTHER MOTORISTS ON THE HIGHWAY AS WELL AS THE EXPENSE OF REPLACEMENT. DEALER SHIP PARTS CLERK STATES ( OFF THE RECORD) THAT THEY SELL APPROXIMATELY 50 OF THESE WHEEL SIMULATORS PER YEAR.
NHTSA ODI #11365163
4,500 miles · Oct 3, 2020
Electrical SystemPower TrainService BrakesFire
THE POSITIVE BATTERY CABLE FOR COACH BATTERIES FELL ON TO THE DRIVE LINE AND STARTED A FIRE WHICH MELTED THE ANTI-LOCK BRAKING SYSTEM AND CAUSED FURTHER DAMAGE UNDER THE COACH. THE FIRE WAS PUT OUT VERY QUICKLY AT THE SHOP WHERE THEY WERE GOING TO HOOK UP A TOW BAR ON THIS NEW RV. (THEY HAD FULLY PREPARED THE TOW VEHICLE AND T…
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THE POSITIVE BATTERY CABLE FOR COACH BATTERIES FELL ON TO THE DRIVE LINE AND STARTED A FIRE WHICH MELTED THE ANTI-LOCK BRAKING SYSTEM AND CAUSED FURTHER DAMAGE UNDER THE COACH. THE FIRE WAS PUT OUT VERY QUICKLY AT THE SHOP WHERE THEY WERE GOING TO HOOK UP A TOW BAR ON THIS NEW RV. (THEY HAD FULLY PREPARED THE TOW VEHICLE AND THIS WAS TO BE THE FINAL STEP) IT IS UNKNOWN WHEN THE INCIDENT BEGAN TO OCCUR BUT THE FIRE MOST LIKELY STARTED AS THE RV WAS BEING DRIVEN FROM OUR HOME IN MEADOW VISTA CA TO ONE STOP TRUCK SHOP IN SACRAMENTO CA. THE FIRE STARTED A FEW MINUTES AFTER THE RV WAS PARKED IN THE PARKING LOT AND MY SON HAD LEFT THE SCENE. A POTENTIALLY DEADLY PROPANE AND DIESEL FUEL EXPLOSION WAS AVOIDED BY THE QUICK AND DECISIVE ACTIONS OF THE OWNERS OF ONE STOP TRUCK SHOP. THE FOLKS WHO SOLD US THE RV MENTIONED WE'D PROBABLY LEFT THE PARKING BRAKE ENGAGED WHILE DRIVING ... WHICH WAS UNTRUE AND COULD LEAD TO FURTHER DENIAL OF A MAJOR ISSUE THAT COULD HAVE BEEN DEADLY TO THE OCCUPANTS AND ANYONE WITHIN THE DISTANCE OF WHAT COULD HAVE BEEN A PROPANE AND DIESEL FUEL EXPLOSION. TO THIS POINT, EVEN THOUGH CLEARLY A WARRANTY ISSUE, BOTH FOREST RIVER AND DIMARTINI RV THEY HAVE MADE NO ATTEMPT TO RESOLVE THE ISSUE EVEN THOUGH THEY HAD THE COACH AT THEIR SHOP FOR SEVERAL DAYS. THEY DEMANDED WE TURN OVER TO INSURANCE EVEN THOUGH THE COACH IS UNDER WARRANTY. EVENTUALLY THE INSURANCE COMPANY TOWED THE COACH TO MERCEDES BENZ OF ROCKLIN CA WHERE THE TECHNICIAN CONFIRMED THE DANGEROUS AND POSSIBLY DEADLY ISSUE.
NHTSA ODI #11362526
25,000 miles · Aug 3, 2020
Electrical SystemUnknown Or Other
NHTSA RECALL: 19V902 DYNAMAX - FOREST RIVER AND DEALER NETWORK ARE UNABLE OR UNWILLING TO SCHEDULE A TIMELY APPOINTMENT TO ADDRESS THE ABOVE REFERENCED RECALL. DEALS DO NOT WANT TO SCHEDULE THE WORK PROMPTLY BECAUSE WE DID NOT PURCHASE THE UNIT FROM THEM. FOREST RIVER INDICATES THEY CAN NOT MODIFY A DEALERS SCHEDULE. NUMEROUS C…
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NHTSA RECALL: 19V902 DYNAMAX - FOREST RIVER AND DEALER NETWORK ARE UNABLE OR UNWILLING TO SCHEDULE A TIMELY APPOINTMENT TO ADDRESS THE ABOVE REFERENCED RECALL. DEALS DO NOT WANT TO SCHEDULE THE WORK PROMPTLY BECAUSE WE DID NOT PURCHASE THE UNIT FROM THEM. FOREST RIVER INDICATES THEY CAN NOT MODIFY A DEALERS SCHEDULE. NUMEROUS CALLS AND EMAILS TO FOREST RIVER WARRANTY AND CORPORATE COMPLIANCE OFFICE TO RESOLVE. NO LUCK.
Forest River, Inc. (Forest River) is recalling certain 2018-2020 Dynamax Isata motorhomes. The slim-rack slide out mechanisms may activate unintentionally, extending or retracting the slide room unexpectedly.
Consequence & remedy
Consequence: If the slide-room extends or retracts unexpectedly, there is an increased risk of injury or a crash.
Remedy: Forest River will notify owners, and dealers will install a new controller and switch for the slideout mechanism, free of charge. The recall began January 24, 2020. Owners may contact Forest River at 1-574-206-7600. Forest River's number for this recall is 55-1030.
Forest River, Inc. (Forest River) is recalling certain 2019 Dynamax Isata motorhomes built on a RAM cab chassis. The primary and secondary brake hoses located between the brake master cylinder and the hydraulic control unit may have been manufactured without anti-corrosion plating on the ferrules.
Consequence & remedy
Consequence: If the ferrules corrode, the brake fluid may leak and cause a loss of braking, increasing the risk of a crash.
Remedy: Forest River will notify owners, and FCA US dealers will inspect the brake hoses and replace them if necessary, free of charge. The recall began on May 6, 2019. Owners may contact FCA US customer service at 1-800-853-1403 or Forest River at 1-574-262-3474. Forest River's number for this recall is 55-0992.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
0
No exact-year investigations in this snapshot.
2019 Dynamax Isata Problems, Complaints & Recalls | Skip That Year