2017 TIFFIN ALLEGRO Complaints

All rear and side marker lights stop functioning without notice. The FCCC Motorhome Chassis rear PDMs is at fault, again (reference NHTSA #20V-404 with at least 2 notices). FCCC provided a work around for PDMs that took care of potential loss of brake and turn signal lights that stop functioning. Unfortunately the marker lights potential issues has not been addressed. Marker lights that do not function correctly increase the risk of a crash after sunset (at nights).

Traveling in rain when passenger side windshield wiper came off as the wiper arm traveled past the curve of the windshield. Had to remove the passenger side wiper arm in order to continue in the rain while only able to use driver side wiper.

Two issues, both resulting in derating to 5 mph on a busy freeway. The DEF sensor has had repeated failures, resulting in 7 generations of DEF sensors, all of which have had repeated failures. Without reprogramming by Cummins, a DEF simulator, or DEF sensor replacement, the engine derates to 5mph upon 2 restarts. This results in a dangerous driving situation unless the vehicle is towed. The second issue is a faulty wiring harness in all Cummins ISV 5.0 engines, used in Nissan Pickups, buses, and Tiffin Breeze motorhomes from 2017-2019. The wiring harness was designed with injector wires that were too short, which caused injectors to intermittently fail, causing the engine to derate on the fly, causing a dangerous driving situation. In June of 2022, Cummins issued a TSB regarding this but no recall was initiated. This issue with the wiring harness and injectors is now linked to the premature engine failure of hundreds of these engines, which results in an immediate stopping of the vehicle in potentially high traffic situations. Neither Cummins nor Tiffin are acknowledging this, or replacing engines unless in warranty. For Tiffin Breeze motorhomes, 3 of the 2017 engines have failed just after warranty expiration that I personally know of. This has occurred in as little as 20,000+ miles. Tiffin and Cummins should inspect all engines that have had documented harness/injector errors for potentially damaged/overheated crankshafts, as broken crankshafts have caused the engine failures.

/Users/karl/Desktop/Tiffin Dash Lights.df.pdf 12 Aug 2020 Ref VIN[XXX], Tiffin Motorhome 2017 Allegro 31 SA F225 Ford 228WB/22000GVWR 22.5TIRES or is it a F550? I see both F numbers in my documents. Subject: Instrument panel lights When driving this vehicle in good weather, sun or partly cloud day, I cannot see anything in the Instrument Cluster. This is quite difficult, dangerous, primarily as I cannot tell my speed much less the other instrument readings. I have the parking lights turned on and the Dimmer switch in the full upright position for maximum illumination. What can be done to correct this issue? [XXX] INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).

In June 2021 at a milage of 10,630 the DEF sensor become faulty and warning lights came when on I-5 interstate, CA. A replacement sensor solve the issue but the new one also getting stuck causing the DEF level not reporting correctly. I am worry about the "Limp mode" if the sensor is not working causing a safety hazard. Either sensor needs to be more reliable or the enabling of the limp mode should be done under careful consideration giving enough time for the driver to get to safety.

TL* THE CONTACT OWNS A 2017 TIFFIN ALLEGRO. WHILE DRIVING APPROXIMATELY 50 MPH, THE STEERING LOST POWER AND THE STEERING WHEEL SEIZED. SEVERAL WARNING INDICATORS ILLUMINATED ON THE INTRUMENT PANEL, INCLUDING THE LOW VOLTAGE WARNING INDICATOR. THE CONTACT ALSO STATED THAT THE VEHICLE MADE LOUD NOISES WHILE DRIVING OVER 50 MPH. THE VEHICLE WAS TAKEN TO POULSBO RV (425-353-6122, LOCATED AT 12218 WA-99, EVERETT, WA 98204) AND THE CONTACT WAS REFERRED TO FREIGHTLINER NORTHWEST (800-523-8014, LOCATED AT 277 STEWART RD SW, PACIFIC, WA 98047). THE TECHNICIAN REPLACED THE SERPENTINE BELT. THE CONTACT CALLED THE MANUFACTURER AND LEFT A MESSAGE, BUT WAS NOT CALLED BACK. THE FAILURE RECURRED AND THE VEHICLE WAS TAKEN BACK TO THE FREIGHTLINER NORTHWEST DEALER, BUT THE TECHNICIAN COULD NO LONGER WORK ON THE VEHICLE AND ADVISED THE CONTACT TO TOW IT TO CUMMINS SALES AND SERVICE (425-235-3400, LOCATED AT 1800 FRYAR AVE, SUMNER, WA 98390). THE DEALER REPOSITIONED THE RADIATOR AND AIR CONDITIONING UNITS, BUT THE VEHICLE WAS NOT REPAIRED COMPLETELY. THE FAILURE MILEAGE WAS APPROXIMATELY 4,287.