2021 Forest River Sunseeker Problems
Owner-reported complaints filed with NHTSA, grouped by component
Data refreshed
What this page shows
Everything below is an owner-reported complaint submitted to NHTSA about the 2021 Forest River Sunseeker, 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
- Driver assistance233.3%
- Electrical116.7%
- Fuel system116.7%
- Powertrain (other)116.7%
- Steering116.7%
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
Driver assistance
Reports naming forward-collision avoidance, lane keeping, back-over prevention, cruise control and related electronic driver-assistance systems.
From owner reports, verbatim
The message center displayed “Service Advance Trac” and the cruise control stopped working. Right after this event the steering wheel was no longer straight when driving straight but angled counterclockwise about 30 degrees. After this happened the warning always comes back and the cruise shuts off after starting the engine and driving a minute or two. The steering wheel has remained at the angled position when driving straight.
TL* THE CONTACT OWNS A 2021 FOREST RIVER SUNSEEKER. THE CONTACT STATED THAT WHILE DRIVING AT 10 MPH, THE CRUISE-CONTROL AND HILL ASSIST DEACTIVATED INDEPENDENTLY AS THE HILL ASSIST NOT AVAILABLE WARNING MESSAGE ILLUMINATED ON THE INSTRUMENT PANEL. THE NEXT DAY, THE CONTACT STATED THAT WHILE DRIVING AT 72 MPH WITH CRUISE-CONTROL ACTIVATED, SUDDENLY, THE AUTOMATIC BRAKING SYSTEM ACTIVATED INDEPENDENTLY AND THE VEHICLE CAME TO A COMPLETE STOP ON THE HIGHWAY AS THE SERVICE ADVANCE TRAC, PRE-COLLISION ASSIST NOT AVAILABLE AND THE HILL START ASSIST NOT AVAILABLE WARNING MESSAGES FLASHED ON THE INSTRUMENT PANEL. THE CONTACT CONTINUED TO DRIVE AS THE WARNING LIGHTS CONTINUED TO FLASH ON THE INSTRUMENT PANEL. THE CONTACT WAS FINALLY ABLE TO CLEAR THE WARNING LIGHTS BUT WAS UNABLE TO RE-ACTIVATE THE CRUISE-CONTROL. THE CONTACT CALLED THE FORD MANUFACTURER, THE MAKER OF THE CHASSIS; FOR ASSISTANCE WITH FINDING A DEALER THAT WAS ABLE TO SERVICE HER VEHICLE. THE CONTACT WAS FINALLY ABLE TO TAKE THE RV TO RUSH TRUCK CENTERS (6800 E. 50TH AVE, COMMERCE CITY, CO 80022) WHERE THEY INSPECTED THE UNIT AND DISCOVERED A DEFECTIVE MODULE IN THE CRUISE-CONTROL. THE VEHICLE WAS REPAIRED. THE FAILURE MILEAGE WAS 2,176. *LN*JB*DT*JB
Too few reports in this category for a page of its own — they appear in the full complaint list.
Electrical
Reports naming the electrical system — wiring, battery, charging, control modules, infotainment and electrical accessories.
From owner reports, verbatim
TL* THE CONTACT OWNS A 2021 FOREST RIVER SUNSEEKER. THE CONTACT STATED THAT WHILE DRIVING AT 10 MPH, THE CRUISE-CONTROL AND HILL ASSIST DEACTIVATED INDEPENDENTLY AS THE HILL ASSIST NOT AVAILABLE WARNING MESSAGE ILLUMINATED ON THE INSTRUMENT PANEL. THE NEXT DAY, THE CONTACT STATED THAT WHILE DRIVING AT 72 MPH WITH CRUISE-CONTROL ACTIVATED, SUDDENLY, THE AUTOMATIC BRAKING SYSTEM ACTIVATED INDEPENDENTLY AND THE VEHICLE CAME TO A COMPLETE STOP ON THE HIGHWAY AS THE SERVICE ADVANCE TRAC, PRE-COLLISION ASSIST NOT AVAILABLE AND THE HILL START ASSIST NOT AVAILABLE WARNING MESSAGES FLASHED ON THE INSTRUMENT PANEL. THE CONTACT CONTINUED TO DRIVE AS THE WARNING LIGHTS CONTINUED TO FLASH ON THE INSTRUMENT PANEL. THE CONTACT WAS FINALLY ABLE TO CLEAR THE WARNING LIGHTS BUT WAS UNABLE TO RE-ACTIVATE THE CRUISE-CONTROL. THE CONTACT CALLED THE FORD MANUFACTURER, THE MAKER OF THE CHASSIS; FOR ASSISTANCE WITH FINDING A DEALER THAT WAS ABLE TO SERVICE HER VEHICLE. THE CONTACT WAS FINALLY ABLE TO TAKE THE RV TO RUSH TRUCK CENTERS (6800 E. 50TH AVE, COMMERCE CITY, CO 80022) WHERE THEY INSPECTED THE UNIT AND DISCOVERED A DEFECTIVE MODULE IN THE CRUISE-CONTROL. THE VEHICLE WAS REPAIRED. THE FAILURE MILEAGE WAS 2,176. *LN*JB*DT*JB
Too few reports in this category for a page of its own — they appear in the full complaint list.
Fuel system
Reports naming fuel storage or delivery — tanks, pumps, lines, injectors and fuel leaks.
From owner reports, verbatim
My 2021 Chevy 4500 is an RV, anyway last September 2023. I was on a 2 1/2-week vacation driving on [XXX] near Lacy Washington and was in the middle lane moving over to the slow lane when the vehicle just stalled. I had just made it off the freeway by a few feet, I seriously thought we were going to get rear ended, especially by a truck because a majority were not moving over. They were rocking our RV as they passed us. The RV ended up starting and running good not stalling again, but it was at times difficult to start. We ended up taking it home to Mount Vernon, Washington to get it repaired. It was still under warranty, although the battery wasn't. I thought at first it was a fuel problem, but after getting it scanned it was a fuel pump problem then after the fuel pump was replaced, they said it was also the fuel Modulator. I had to wait for 4 and 1/2 months to get this replaced. meanwhile my 2-year battery went dead while it was sitting there at Blade Chevrolet in Mount Vernon, Washington and there was no pro-rate on it so I was stuck for the full price of the battery. At the time of this repair, I had about 11,878 miles. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Too few reports in this category for a page of its own — they appear in the full complaint list.
Powertrain (other)
Powertrain reports that are not specifically the engine or transmission — driveshafts, axles, transfer cases and differentials.
From owner reports, verbatim
Our vehicle is stuck in park. Driver message system says “Do not shift, Contact Mercedes”. We have the Mercedes Sprinter 3500 XD chassis. While our vehicle had this happen in our driveway, internet research to resolve our issue revealed several Sprinters having the same issues while stopped in traffic.This is our second incident involving Mercedes dealer intervention. While we are inconvenienced, one could understand the dangerous impact a stalled rv on a interstate could become. We have not received any solution from Mercedes.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Steering
Reports naming the steering system — racks, columns, power-steering assist and steering linkage.
From owner reports, verbatim
The message center displayed “Service Advance Trac” and the cruise control stopped working. Right after this event the steering wheel was no longer straight when driving straight but angled counterclockwise about 30 degrees. After this happened the warning always comes back and the cruise shuts off after starting the engine and driving a minute or two. The steering wheel has remained at the angled position when driving straight.
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
- NHTSA Office of Defects Investigation — owner-reported complaints and the components recorded on them
Data on this page last refreshed .