2017 Entegra Cornerstone Engine Problems
- Complaints
- 4about this part
- Share
- 67%of 6 total for the year
- Median mileage
- 22,627miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 4 complaints about the engine of the 2017 Entegra Cornerstone, 67% of the 6 complaints for this model year. Where a mileage was given, the median is 22,627 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“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. …”
NHTSA complaint #11308285, filed 2020-02, 22,627 miles“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. …”
NHTSA complaint #11384379, filed 2020-12, 21,199 miles“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. …”
NHTSA complaint #11426969, filed 2021-07, 35,000 miles“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, vehicle was difficult to control steering and safely getting to side of road. …”
NHTSA complaint #11613713, filed 2024-09Related service bulletins
- 10195201Sep 1, 2016Cover for vanity slide out motors.
Engine: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2017 | 4 | 67% |
Other parts of the 2017 Entegra Cornerstone
← All problems reported for the 2017 Entegra Cornerstone
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 28, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology