I have owned both a 2019 and the new 2021 entegra cornerstone motor homes. On both motor homes, the diesel exhaust fluid (def) sensor have failed in less that 2,000 miles. When def sensors fail the engine can go into derate which is 5 MPH in less that a couple hundred miles. This problem is leaving many large diesel engine owned vehicles stranded, from motor homes to large over the road trucks. I have contacted spartan motors the manufacture of the chassis, which referred me to shaw development, the manufacture of the def sensor. Shaw development refuses to take calls or emails requesting information regarding this problem. The def sensors was a regulation passed by epa in 2016, stating the def concentration be measured in the def tanks of vehicles. However the def sensor manufactures cannot seems to manufacture a part that will work and not put engine into derate. Shaw development is currently at the sixth generation of the def sensor which are still failing on brand now 2021 year motor homes. That is six attempts to make a part that continues to leave people on long trips stranded. With all of the contacts I have made regarding this problem, nothing is being done except passing the buck. This link is a small sample of what users have been facing with this problem. Many posts like this are all over the internet. Https://www.irv2.com/forums/f278/more-on-the-def-sensors-per-cummins-516724.html the photo shows the def units that have to be replaced at cummins diesel engine shops. This is a major problem with all diesel engines. Epa requirements that the chassis manufactures cannot meet leaving the owners stranded. The def sensor by shaw development being purchased by spartan motors chassis, inc are now on the sixth edition with the failure rate continuing. My repair date with cummins service in ft myers fl was dec 2, 2020 and a new 2021 model motor home.*dt*jb*dt
The worst 2021 Entegra Cornerstone problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
- Engine1
- Fuel system1
Problems by type
Tap a problem to see which part fails, at what mileage and in which other years.
- Engine1
- Fuel system1
Recalls 6
Seats
- What is wrong
- Jayco, Inc. (Jayco) is recalling certain 2020-2023 Entegra Anthem, Aspire, Cornerstone, and Reatta XL motorhomes. The pedestal mounting plate on the passenger's seat may be improperly welded, causing the plate to separate and the seat assembly to loosen or detach. As such, these seat assemblies fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 207, "Seating Systems" and number 210, "Seat belt assembly anchorages."
- Risk
- A loose or detached seat assembly increases the risk of injury.
- Remedy
- Dealers will inspect for a missing weld and replace the pedestal as necessary, free of charge. Owner notification letters were mailed March 11, 2024. Owners may contact Jayco customer service at 1‑800‑283‑8267. Jayco's number for this recall is 9903602.
Recall number 24V061000 · Recall details
Engine
- What is wrong
- Jayco, Inc. (Jayco) is recalling certain 2021-2023 Entegra Anthem, Aspire, Cornerstone, Reatta, Reatta XL, and Jayco Embark motorhomes. The engine air intake box may not have a water drain installed, which can cause water to build up inside the air intake box.
- Risk
- Water build up inside the air intake box can enter the engine and cause engine failure, increasing the risk of a crash.
- Remedy
- Dealers will inspect and install a drain if necessary, free of charge. Owner notification letters are expected to be mailed October 3, 2022. Owners may contact Jayco customer service at 1‑800‑283‑8267. Jayco's number for this recall is 9903580.
Recall number 22V665000 · Recall details
Steering: hydraulic power assist: pump
- What is wrong
- Jayco, Inc. (Jayco) is recalling certain 2021 Class A Cornerstone motorhomes. A machining defect may cause pressure to build in the power steering pump and break the shaft seal, resulting in a loss of power steering assist.
- Risk
- A loss of power steering assist increases the risk of a crash.
- Remedy
- A Spartan or Shyft Group repair center will inspect the pump serial number, and replace the power steering pump if necessary, free of charge. Owner notification letters were mailed January 12, 2022. Owners may contact Jayco customer service at 1‑800‑283‑8267.
Recall number 21V885000 · Recall details
Electrical system: instrument cluster/panel
- What is wrong
- Jayco, Inc. (Jayco) is recalling certain 2019-2021 Entegra Anthem, Aspire, Cornerstone, Reatta, Reatta XL, and Jayco Embark Class A motorhomes. The instrument cluster may intermittently go blank while the vehicle is in motion.
- Risk
- A blank instrument cluster display may be missing critical information such as the vehicle's speed and warning lights, which can increase the risk of a crash.
- Remedy
- Dealers will update the control module software, and reroute and secure the duct work, free of charge. Owner notification letters were mailed October 22, 2021. Owners may contact Jayco customer service at 1‑800‑283‑8267.
Recall number 21V769000 · Recall details
Structure
- What is wrong
- Jayco, Inc. (Jayco) is recalling certain 2019-2021 Anthem, Aspire, Cornerstone, Insignia, Reatta, and Embark recreational vehicles equipped with Hehr 6400 series windows. The adhesive that bonds the vented portion of the window may fail.
- Risk
- Adhesive failure may cause the vent portion of the window to detach, increasing the risk of a crash or injury.
- Remedy
- Dealers will inspect the windows, and replace the vent if necessary, free of charge. Owner notification letters were mailed August 31, 2021. Owners may contact Jayco customer service at 1‑800‑283‑8267. Jayco's number for this recall is 9903569.
Recall number 21V529000 · Recall details
Electrical system: wiring
- What is wrong
- Jayco, Inc. (Jayco) is recalling certain 2021 Entegra Aspire, Anthem, Cornerstone, and ReattaXL motorhomes built with Villa power seats. The power seat wiring may become chafed due to poor routing, and no protection, or melt from exceeding the 14 gauge wire amp capacity.
- Risk
- Damaged power seat wires may short circuit, increasing the risk of a fire.
- Remedy
- Jayco will notify owners, and the dealers will inspect the seat wiring for loom protection and secure it with wire ties, free of charge. The remedy regarding the switch and exceeding the amp capacity is still under development. The recall began December 4, 2020. Owners may contact Jayco customer service at 1‑800‑517‑9137. Jayco's number for this recall is 9903521.
Recall number 20V600000 · Recall details
Technical service bulletins for the 2021 Entegra Cornerstone 34
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- SRP ( Standard Repair Instruction) In certain conditions the Inverter/Charger shuts down due to high temp...
- Standard Repair Procedure (SRP)
- INC (Informational Communication) Regarding Pairing and programming key fobs.
- Standard Repair Procedure (SRP) Wiper Arm Replacement Instructions.
- Standard repair procedure: Shower enclosure and shower door installation instructions.
- Standard repair procedure (SRP)
- Generator Slide Tray extends when stopped or parked
- Technical Service Bulletin for Firefly tank sensor failing
- Instructions for programming and replacing dry contact module for awning.
- Process for cleaning soiled carpet
What 2021 Entegra Cornerstone owners say
Most recent owner complaints, unedited.
Compare the 2021 Entegra Cornerstone
Other model years
Questions about the 2021 Entegra Cornerstone
Is the 2021 Entegra Cornerstone reliable?
Owners have filed 1 complaint about the 2021 Entegra Cornerstone, close to a typical Cornerstone model year.
What is the most common problem with the 2021 Entegra Cornerstone?
Engine and cooling, with 1 complaint. Next is fuel system (1).
How many recalls does the 2021 Entegra Cornerstone have?
6 recalls, covering seats, engine and steering.
Was there a recall on the 2021 Entegra Cornerstone engine?
Yes, 1 recall: 22V665000. Check your VIN to see if your car still needs the free repair.
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