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)
The worst 2021 Forest River Sunseeker problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
- Acceleration2
- Electrical1
- Fuel system1
- Steering1
- Transmission1
Problems by type
Tap a problem to see which part fails, at what mileage and in which other years.
- Acceleration2
- Electrical1
- Fuel system1
- Steering1
- Transmission1
Recalls 4
Fuel system, gasoline: delivery: hoses, lines/piping, and fittings
- What is wrong
- Forest River, Inc. (Forest River) is recalling certain 2021-2023 Coachmen Galleria, Beyond, Forester, Sunseeker, and 2021-2024 Nova motorhomes, equipped with certain Cummins Onan QG 2800i, and Onan QG 2800i EVAP generator sets. The fuel hose between the inline fuel filter and the Injection Pump Module (IPM) may have inadequate clamp force, possibly resulting in a gasoline leak.
- Risk
- A gas leak in the presence of an ignition source increases the risk of a fire.
- Remedy
- Cummins Dealers will inspect and replace the fuel hose and clamps, as necessary, free of charge. Owner notification letters were mailed May 17, 2023. Owners may contact Cummins at: (800) CUMMINS OR (800) 286-6467. Owners may contact Forest River Customer Service at 1‑574‑206‑7600, or Coachmen Class B customer service at 1‑574‑825‑8602. Forest River's number for this recall is 51-1626.
Recall number 23V286000 · Recall details
Seats
- What is wrong
- Forest River, Inc. (Forest) is recalling certain 2020-2021 Forest River Forester, Sunseeker, Dynamax Isata and Coachmen Galleria and Prism motorhomes built on Sprinter Van chassis equipped with swivel seats. The wiring harnesses for the front seats may have been routed incorrectly and could become jammed and damaged in the swivel seat frames.
- Risk
- If the wiring harness is damaged, the side air bag within the seat may deploy inadvertently or not deploy as designed in the event of a crash, increasing the risk of injury to vehicle occupants.
- Remedy
- Forest River will notify owners, and Sprinter dealers will inspect the wire harness routing for both front seats and will repair the wiring and add clips or cable ties as needed, free of charge. This recall began September 21, 2020. Owners may contact Daimler Vans customer service at 1‑877‑762‑8267. Daimler Vans number for their recall is VS3DREHSIK. Forest's number for this recall is 51-1206.
Recall number 20V477000 · Recall details
Structure: frame and members: underbody shields
- What is wrong
- Forest River Inc. (Forest River) is recalling certain 2020-2021 Coachmen Galleria, Dynamax Isata, and Forest River Battisti Coach, Forester, and Sunseeker motorhomes, built on 2019 Mercedes-Benz Sprinter chassis. The rear part of the front fender liner may contact and chafe the brake hose, possibly resulting in a loss of brake fluid.
- Risk
- Loss of brake fluid can extend the distance needed to stop the vehicle, increasing the risk of a crash.
- Remedy
- Forest River will notify owners, and Mercedes-Benz or Freightliner Sprinter dealers will inspect and replace the brake hoses, as necessary. Additionally, the fender liners will be modified. All services will be performed free of charge. This recall began July 8, 2020. Owners may contact DVUSA customer service at 1‑877‑762‑8267. DVUSA's number for this recall is VS3BRADVER. Forest River's number for this recall is 51-1177.
Recall number 20V363000 · Recall details
Equipment: other: owners/service/other manual
- What is wrong
- Forest River, Inc. (Forest River) is recalling certain 2020-2021 Coachmen Galleria and PRISM, Forest River Forester, Battisti and Sunseeker and Dynamax Isata recreational vehicles built on Sprinter chassis with automatic transmission. The operator's manual does not correctly specify certain conditions under which the automatic parking function ("Auto-P") operates.
- Risk
- If the driver relies on the Auto-P function as described in the Operator's Manual, vehicle rollaway or movement may occur, increasing the risk of a crash.
- Remedy
- Forest River will notify owners, and Mercedes-Benz dealers will provide the correct description of the Auto-P function for the Operator's Manual, free of charge. The recall began June 25, 2020. Owners may contact Forest River customer service at 1‑800‑348‑7440 or Sprinter service at 1‑877‑762‑8267. The booklet with correct information is also available online through Mercedes-Benz, free of charge.
Recall number 20V358000 · Recall details
Technical service bulletins for the 2021 Forest River Sunseeker 26
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- According to Ford Recall 25V793: "According to Ford’s records, the remedy software for Safety Recall 20S73...
- According to Ford recall 25V442 / 25S72: "On your vehicle, it may be possible an error in the SYNC...
- According to GM Recall 24V702: "The brake lines in these cutaway vehicles may not meet the recommended...
- According to General Motors Recall 24V702: "The brake lines in these cutaway vehicles may not meet the...
- According to General Motors Recall 23V247: "These vehicles are equipped with an unused circuit that a...
- The Tire Pressure Monitoring System (TPMS), on some Ford E450 chassis may experience intermittent loss of...
- As per recall 23V100
- According to the Interim Recall Notice Received by Mercedes-Benz concerning 22V796: "Mercedes-Benz AG has...
- According to Mercedes-Benz Recall 22V360: âThe communication module's SIM card could become disabled and...
- Notice This was received by Mercedes-Benz Canada
What 2021 Forest River Sunseeker owners say
Most recent owner complaints, unedited.
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.
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.
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
Compare the 2021 Forest River Sunseeker
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Questions about the 2021 Forest River Sunseeker
Is the 2021 Forest River Sunseeker reliable?
Owners have filed 4 complaints about the 2021 Forest River Sunseeker, 2.0 times a typical Sunseeker model year.
What is the most common problem with the 2021 Forest River Sunseeker?
Acceleration and speed control, with 2 complaints. Next is electrical (1).
How many recalls does the 2021 Forest River Sunseeker have?
4 recalls, covering fuel system, gasoline, seats and structure.
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