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...
Engine & cooling
Entegra Cornerstone Engine problems by year
10 complaints filed with NHTSA about the Entegra Cornerstone's engine & cooling. Stalling, loss of power, oil consumption, overheating, head gaskets, timing chains and engine failure.
Engine complaints by model year
Engine recalls
Entegra Coach (Entegra) is recalling certain model year 2010 Anthem and 2012-2014 Cornerstone motorhomes manufactured October 5, 2009, to June 18, 2013 and built on a Spartan Motors chassis. In the affected vehicles, the flexible exhaust tube may tear...
Latest Cornerstone engine complaints
Traveling at highway speeds, engine running at approximately 1,700 RPM without warning, a catastrophic engine failure occurred. Piston connection rod appears to have failed, causing both sides of engine block and oil pan to be destroyed, dumping oil and coolant onto roadway. Cummins ISX15 diesel engine. This dropped large pieces of engine block and debris all over the road causing a danger to other drivers. Because of the travel speed and complete loss of engine power (Red Stop Engine Light) with no warning,...
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vehicle was difficult to control steering and safely getting to side of road. This vehicle was 7 years old, however only had 23,000+/- mile on it. The Stop Engine Light and warning buzzer came on and in less than 60 seconds, while trying to pull over safely on the shoulder of the interstate (again traveling at highway speeds), the catastrophic failure occurred. Vehicle was towed to local Cummins repair center for investigation and repairs.
While driving across Florida, the "Check Engine" light and first of three DEF Head "Service Codes" on our 2018 Entegra Cornerstone 45' RV came on, indicating that our Diesel Exhaust Fluid (DEF) system had an issue. From previous social media posts from other Entegra Owners, we immediately contacted the chassis manufacturer, Spartan. They requested that we contact Cummins-Orlando, FL for a DEF Head replacement. Cummins-Orlando said they couldn't get us in for three weeks, which wasn't an option, as we were...
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traveling and couldn't wait three weeks. We contacted Cummins-Tampa, FL and Cummins-Jacksonville, FL, with both stating 2-3 weeks to get us in. By this time, the second of three DEF codes came on, so the situation was getting more dire. We finally got through to Cummins-Ocala, FL and they were able to squeeze us in the next day. The third of three DEF Codes came on during the relatively short drive to Ocala, FL, but we were able to get there before the RV went into "limp mode" which restricts your speed to 5mph!! We were extremely worried about being stranded on the busy interstate Highway in a vehicle the size of a Greyhound Bus, limping along at 5mph with 18-wheelers whizzing by at 70-75mph! This DEF Head issue has been going on for several years and doesn't seem to be getting any better, even though the manufacturer is on their 7th Generation of DEF Head technology. Luckily, Spartan had the DEF Head in-stock and was able to overnight it to Cummins-Ocala, but many others have been held up for days/weeks due to a back order on the replacement DEF Heads. I feel that a recall should be issued on all DEF Heads prior to the 7th Generation, in order to avoid the safety issues associated with being stranded on the highway with a failed DEF Head.
The contact owns a 2017 Spartan Entegra Cornerstone RV. The contact stated while starting the RV to leave a campsite, he became aware that the check engine warning light was illuminated. The contact took the vehicle to the local dealer who inspected the vehicle and diagnosed the failure as a diesel exhaust fluid (DEF) system sensor head that needed to be replaced. The dealer replaced the sensor system however, the failure recurred. The vehicle was taken back to the same dealer and the sensor was replaced again. The contact was concerned that the failure would recur. The vehicle was repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 35,000.
Def head sensor failure causing an unsafe derate condition. The rv will only go 5mph causing me to not be able to get to a safe location. As i understand the engine and def system are functioning as they should but the malfunctioning sensor has caused the engine to shut down or derate to 5mph.
Vehicle has approximately 30,800 miles. A check engine light with error codes SPN: 3364, 1761, 3331 indicating a failure of the DEF ( diesel exhaust fluid) sensor. This results in a degrade in performance to a point of engine shutdown. Replacement parts are very hard to obtain because this error is so common.
DEF sensor failed twice. Potential engine derate or shut down. Problem well known to chassis manufacturer. Failure announced by Check Engine Light and three well known codes. Time or distance to derate/shutdown is unknown, and consequently could result in a large motor home stopped on the road.
Shortly after starting the engine a "CHECK ENGINE" warning appeared on the warning system. I went through diagnostics and found 3 codes relating to DEF head failure. There have been a large number of these in Entegra Coach motor homes in the last 6-12 months.
October 2018, 21199 odometer reading, on public two lane highway, three fault codes annunciated. Pulled off highway on narrow shoulder with heavy truck traffic passing. Not sure what was issue with flashing codes and buzzer screaming. All codes related to def system. Unsure how far I could drive before vehicle went into limp home mode. Did not want it to happen on isolated major highway. Continued on 20 miles to nearest rv park. Repair required shaw development def control head to be replaced in kingman, az. ...
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Action resulted in unscheduled stop and trip interruption of two weeks while waiting for replacement part. July 2020, 30831 odometer reading, same three fault codes related to def system annunciated. Shaw development control head was again replaced in mission, tx. Issue does not appear to be entirely corrected. No confidence in 6th revision of shaw development control head. Waiting for next failure and hopefully not where personal safety is compromised.
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...
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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*tr
Radiator tank started leaking at a rate of over 15 qts per hour on trip to florida. Kept filling with water to get 2 hours to final destination. Replacement of radiator was done at north trail rv in fort meyers at my expense of $6,195.34. Spartan motors is the manufacturer of the chassis and this is a well known and documented problem with api radiators. They have replaced many of them to date, my coach was just 6 months out of warranty and they said they would help me out they offered $1,000.00 Against almost $6200 bill. Why isn't the rv industry held to the same accountability standards as the auto industry?
Source: U.S. National Highway Traffic Safety Administration (NHTSA) complaints and recalls, checked daily. Complaints are owners' own reports and are not verified. How we use the data