Tiffin PHAETON problems and owner complaints

CUMMINS INC. ISSUED A FIELD ACTION, ATC1747 TO PREVENT PRESSURIZED ENGINE FUEL LEAKS. WE RECEIVED A LETTER FROM CUMMINS DATED JULY 28 2016 STRONGLY ENCOURAGING CUMMINS COMPLIMENTARY INSTALLATION OF FUEL SUPPLY LINE ISOLATORS ON #1 AND #6 FUEL INJECTORS. CUMMINS IS NOW SAYING THAT WE DIDN'T ACT ON THE OFFER QUICKLY ENOUGH AND THEY'VE RETRACTED THEIR OFFER TO INSTALL THE FUEL SUPPLY LINE ISOLATORS AT NO CHARGE. OUR RV ENGINE IS STILL UNDER CUMMINS FACTORY WARRANTY WITH ONLY 5,000 MILES, AND WE HAVE ALREADY HAD A SERIOUS PRESSURIZED FUEL SYSTEM L…

Look up ODI 10945574 at NHTSA ↗

Engine Fault Codes 3364, 3031 & 1761. DEF Head Senor Failed. Derated the engine. Travel speed reduced to 5 MPH. Replacement Part backorder from Tiffin Motorhomes. Limited information when availability.

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THE EPA CAME OUT WITH REQUIREMENTS IN 2013 THAT ALL DIESEL ENGINES HAVE A POLLUTION MITIGATING DEF (DIESEL EXHAUST FLUID) SYSTEM. APPARENTLY, THE EPA REQUIRED THE INDUSTRY TO MEASURE THE FOLLOWING THREE ITEMS WITH RESPECT TO BLUE DEF. - LEVEL OF DEF - TEMPERATURE OF DEF - QUALITY OF DEF I HAVE BEEN TOLD THAT THE EPA GRANTED AN EXTENSION OF THE THIRD REQUIREMENT, QUALITY OF DEF, SINCE NO ONE COULD MANUFACTURE THE EQUIPMENT NECESSARY TO DO SO. THIS EXTENSION APPARENTLY LASTED UNTIL 2017. THESE DEF SENSORS BEING INSTALLED ARE FAILING AT AN A…

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CUMMINS FUEL FILTER FF 63009 DATE CODE 14200, APPEARED TO HAVE FAILED, LEAKING FUEL ONTO THE EXHAUST PIPE AS WELL AS STALLING THE MOTOR HOME AT THE CREST OF A SMALL MOUNTAIN.LEAKING FUEL DID NOT CAUSE A FIRE BUT DID SMOKE. IF ENGINE HAD BEEN IN REGEN MODE THERE COULD HAVE BEEN A FIRE....CONTACT WITH CUMMINS REVEALED THAT THEY HAVE HAD SOME OF THESE FILTERS FAIL WITH NO APPARENT VISUAL DEFECTS BUT DID SHOW UNDER PRESSURE. *TR

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This vehicle has fuel fill on both sides. You have to open the other side in order to prevent a vapor lock on the fueling side. I have fueled this way numerous times without incident. I recently fueled the same way and fuel gushed out the opposite side without tripping the fuel nozzle cut off. This resulted on a significant amount of fuel dumping on the fuel bay.

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WHILE DRIVING ON THE INTERSTAE THE CARGO DOOR SKIN BLEW OFF. THE DOOR IS APPROXIMATELY 48' X 28" THIS COULD HAVE GONE THRU A WINDSHEILD AND CAUSED A FATAL ACIDENT. THIS HAS BEEN KNOWED THAT TIFFIN USED DEFECTIVE GLUE IN 2019' BUT THEY HAVE NOT MADE A RECALL, THEY HAVE CORRECTED SEVERAL OTHER VEHICLES BUT NOT ALL OF THEM MANUFACTURED WITH THE DEFECTIVE GLUE. THIS SHOULD BE A RECALL. THERE WAS NO WARNING OR ANYTHING VISIBLE TO US BEFORE DRIVING ON THE ROAD.

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Our motorhome came with an optional electric grill that is mounted on a slide in the storage compartments. While underway, the slide deployed, popping open the compartment door. The slide was then hanging out approximately 5 feet while going down the road. Thankfully someone flagged us down just before we would have struck another vehicle with the slide. Upon further investigation, the slide that the grill is mounted on has a placard stating the slide is limited to 500 pounds total weight EVENLY DISTRIBUTED. The grill is mounted at one end of …

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UPON PURCHASING THIS 2021 TIFFIN PHAETON RV, I REALIZED THE "A PILLARS" CAUSED MIRROR AND VISUAL OBSTRUCTION. INITIALLY BELIEVING IT WAS A MIRROR ADJUSTMENT, I LEARNED THAT THE DRIVER SEAT WAS NOT CENTERED ON THE STEERING WHEEL / DASHBOARD AND IT WAS POSITIONED TO THE LEFT APPROX. 2"-3". NOT ONLY DOES THIS PREVENT A CLEAR VIEW TO THE MIRRORS, BUT IT CAUSES "PEDAL CONFUSION" AND COULD RESULT IN A CATASTROPHIC COLLISION RESULTING IN A FATAL(S) THE DISTANCE BETWEEN THE GAS AND BRAKE PEDALS ARE APPROX. 3". HAVING THE DRIVER NOT CENTERED ON THE …

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AT 23000 MILES MY RIGHT OUTER DUEL MICHELIN TIRE BLEW WHILE TRAVELING AT 60 MPH ON I77. ENDED UP GETTING OFF HIGHWAY AND INTO A PLAZA WHERE ROAD SERVICE REPLACED THE TIRE.IT HAD A ZIPPER RIP IN THE SIDEWALL TIRES STILL HAVE 9/16" TREAD,WERE LOADED WITH105# AIR PRESSURE ACCORDING TO WEIGHT AND MICHELINS CHARTS.TIRES WERE ALWAYS COVERED WHEN NOT TRAVELING (TO PROTECT FROM UVRAYS,)THEY HAD TIRE MONITOR SYSTEM THAT SHOWED NORMAL PRESSURE AND TEMP.TIRES ARE MICHELIN 275/80R22.5 X LINE ENERGY 16 PLY H RATING WITH DATE CODE OF 3316.MICHELIN REP (ALVI…

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I SAW A POST ON THE TIFFIN RV FORUM REGARDING THE VALVE STEM STABILIZERS THAT FREIGHTLINER PROVIDED ON RECENT RV CHASSIS EQUIPPED WITH A NEW STYLE RIM. I HAVE A 2018 TIFFIN COACH AND HAD THE SAME ISSUE SOON AFTER I PURCHASED IT. I NOTICED THAT THE VALVE STEM WAS RUBBING ON THE CHROME WHEEL AND IN FACT HAD RUBBED OFF THE CHROME DOWN TO BARE METAL. I TOOK IT TO BAY DIESEL IN RED BAY, AL. AND THEY REPLACE THE VALVE STEMS. THEY SHOWED ME ON ONE WHERE IT HAD ALMOST RUBBED THROUGH AND THERE WOULD HAVE BEEN AN AIR LEAK IF I HAD DRIVEN IT MANY MORE…

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TL* THE CONTACT OWNS 2019 TIFFIN PHAETON 35BH. THE CONTACT WAS DRIVING AT APPROXIMATELY 54 MPH WHEN THE TMPS INDICATED THAT THE REAR PASSENGER TIRE PRESSURE WAS LOW. UPON STOPPING THE VEHICLE AND INVESTIGATING, THE CONTACT NOTICED THAT REAR PASSENGER'S SIDE VALVE STEM EXTENSION INNER TIRE WAS DISLODGED. THE CONTACT ALSO NOTICED THAT THE REAR DRIVER SIDE STABILIZER WAS ALSO DISLODGED BUT NO AIR WAS LOST. THE MANUFACTURER WAS NOTIFIED AND INFORMED THE CONTACT THAT THE VIN WAS NOT INCLUDED IN NHTSA CAMPAIGN NUMBER: 18V194000 (TIRES). THE CONTACT W…

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Frieghtliner uses a tire pressure monitoring system manufactured by Valor. The system is unreliable and stops transmitting data to the instrument panel without any notice to the driver. The only way you discover it is not working is by scrolling through options on the instrument panel and discovering that instead of registering pressure and temperatures, you have dashes displayed. There is no alarm or other indication the system has failed. Loss of air on a steer wheel in a large motor home is potentially life threatening. The loss of pressure…

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CUMMINS FUEL FILTER FF 63009 DATE CODE 14200, APPEARED TO HAVE FAILED, LEAKING FUEL ONTO THE EXHAUST PIPE AS WELL AS STALLING THE MOTOR HOME AT THE CREST OF A SMALL MOUNTAIN.LEAKING FUEL DID NOT CAUSE A FIRE BUT DID SMOKE. IF ENGINE HAD BEEN IN REGEN MODE THERE COULD HAVE BEEN A FIRE....CONTACT WITH CUMMINS REVEALED THAT THEY HAVE HAD SOME OF THESE FILTERS FAIL WITH NO APPARENT VISUAL DEFECTS BUT DID SHOW UNDER PRESSURE. *TR

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The contact owns a 2018 Tiffin Phaeton RV. The contact stated that while driving approximately 60 MPH, the dashboard instrument cluster lights suddenly began to flash off and on and the Diesel Emission Fluid (DEF) sensor light remained illuminated before the vehicles decelerated independently to 5 MPH. The vehicle was driven to a nearby service center(unknown) and the Diesel Emission Fluid sensor was replaced, and the failure was remedied. The manufacturer was notified of the failure. The local dealer was not contacted. The failure mileage was …

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AT 23000 MILES MY RIGHT OUTER DUEL MICHELIN TIRE BLEW WHILE TRAVELING AT 60 MPH ON I77. ENDED UP GETTING OFF HIGHWAY AND INTO A PLAZA WHERE ROAD SERVICE REPLACED THE TIRE.IT HAD A ZIPPER RIP IN THE SIDEWALL TIRES STILL HAVE 9/16" TREAD,WERE LOADED WITH105# AIR PRESSURE ACCORDING TO WEIGHT AND MICHELINS CHARTS.TIRES WERE ALWAYS COVERED WHEN NOT TRAVELING (TO PROTECT FROM UVRAYS,)THEY HAD TIRE MONITOR SYSTEM THAT SHOWED NORMAL PRESSURE AND TEMP.TIRES ARE MICHELIN 275/80R22.5 X LINE ENERGY 16 PLY H RATING WITH DATE CODE OF 3316.MICHELIN REP (ALVI…

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I recently experienced a failure of the Dash A/C on the ref RV. After calling Freightliner, Savannah to find our if they serviced Dash A/C’s, which they informed me they did, I decided to have it inspected locally to rule out a quick fix like recharge the refrigerant. The Mobile RV Mechanic, whom I have used several times previously and is very competent, troubleshot the system and found that the A/C compressor was not engaging. He then found that there was only .2V to the compressor clutch plug. Suspecting the PDM, he called Freightliner T…

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UPON PURCHASING THIS 2021 TIFFIN PHAETON RV, I REALIZED THE "A PILLARS" CAUSED MIRROR AND VISUAL OBSTRUCTION. INITIALLY BELIEVING IT WAS A MIRROR ADJUSTMENT, I LEARNED THAT THE DRIVER SEAT WAS NOT CENTERED ON THE STEERING WHEEL / DASHBOARD AND IT WAS POSITIONED TO THE LEFT APPROX. 2"-3". NOT ONLY DOES THIS PREVENT A CLEAR VIEW TO THE MIRRORS, BUT IT CAUSES "PEDAL CONFUSION" AND COULD RESULT IN A CATASTROPHIC COLLISION RESULTING IN A FATAL(S) THE DISTANCE BETWEEN THE GAS AND BRAKE PEDALS ARE APPROX. 3". HAVING THE DRIVER NOT CENTERED ON THE …

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While driving the top bunk above the drivers and passenger seats came loose from the latches and came down blocking my view of the road. My wife just sat down in her seat otherwise it would have hit her on the head. She was able to guide me to the side of the road and it put the bunk back on the latches. This is a huge safety problem which blocks the view of the driver. and can cause a major or even a catastrophic accident I sent an email to Tiffin and their response several weeks ago was thanking me for letting them know. There was no f…

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