TIFFIN Complaints

The DEF headers (level sensors) are a known issue with these motor homes and many other diesel vehicles dating back to 2010 to even new ones today. Shaw Industries is one of the main suppliers of this part (the supplier of the ones on Tiffin Motorhomes) and have done nothing to reimburse owners for the failures. When the level sensor fails the vehicle can go into a derate mode causing it to only be able to go 5 mph. This can be very dangerous for someone on a road trip hundreds of miles from any service, plus obtainung a replacement can take months, leaving people their families and dogs stranded that entire time. These DEF headers need to be recalled and all costs reimbursed to the techs of thousands who have had issues with them. Emissions control systems are expected to last for the life of a vehicle, not fail frequently, with replacement costs going into the thousands of dollars.

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.

During a cross country trip, failure of tire valve extender, resulted in loss of tire pressure. This sudden loss of pressure could have resulted in a vehicle highway accident. This problem occurred twice (each incident within 2 hours of each other). Our RV, has dual rear tires, and was not detected until we stopped for fuel. We did not receive an alert from the tire pressure sensor that pressure was lost. The first failure was detected when we stopped for gas and noticed the right rear, outside tire was severely damaged/flat. Fortunately, the inside tire was undamaged and prevented loss of control of the RV on the highway. We had a service repair company replace the tire. During the repair, the technician, noted that the tire tread looked good, but discovered that tire extender valve and valve stem were both damaged, concluding this damage caused the tire to deflate. Since we were unaware of the flat while traveling on the highway, we had apparently driven on the flat for some period of time causing the additional tire damage. Two hours of travel after the first damaged tire was replace, we discover the left outside tire flat when stopping for fuel. Again, no warning from the vehicle alerted us. The next service technician, inspected the tire and discovered the valve stem had failed as a result of stress from the valve extender. After this problem, we had all other extenders removed for the remaining of the trip. Note: A recall was issued a year ago as a result of safety concerns with wheel liners and the extenders (concern was exact scenario I experienced twice!). I had the recall work performed several months ago. Multiple attempts to get attention from the Manufacturer (Tiffin) has been unsuccessful.

2022 TIFFIN ALLEGRO OPEN ROAD 34 PA- Consumer submitted copy of letter sent to Ford Corporation about experience with NHTSA recall- 22V-731-Ford F-53 chassis rear stabilizer bar attachment. Consumer states: "Even though parts needed to complete the recall repair would not be available until the first quarter of 2023 we started the search for a suitable repair facility in our area. We contacted the Ford Motor Company Motorhome Customer Assistance Center at the phone number provided in the recall letter. We had to make repeated calls because each representative we spoke to was limited in the number of shops they could recommend at one time. Our residential zip code is 88030 in rural New Mexico." (6 different calls listed in letter and the results.) "Eventually we called the FMCMCAC and was given the number to the Ford Recall/Warranty Center where we spoke with Ford Recall Reimbursement Representative Elissa Peter. She assigned us Case File # CAS 42'123809 and suggested we try Earnhardt Ford in Chandler, AZ. Chandler is 250 miles west of Deming which would be a 500 mile roundtrip. They do not provide appointments and work only on a 1st come 1st served basis with a 6-8 week wait after you leave your motorhome with them. We are fulltime RVer's and would need a place to stay for 2 months in a strange town while waiting for service. That was when we decided to find our own shop. We located the Midway Ford Truck Center in Kansas City, MO. Not only did they allow us to make an appointment, but a RV Park was less than a mile away. We made an appointment for Tuesday, May 9th at 8 am. At that time, we were informed that this appointment was for an inspection of the Rear Stabilizer only, and if it was determined the work needed to be done, parts would be ordered and installed at a later date. This was a surprise since the if original letter stated when parts became available we could make an appointment with our dealer where the faulty parts would be replaced. We arrived in Kansas City early afternoon Monday, May 8th hoping

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 follow up no telephone call or no concern on their behalf as to what happened. This needs to be investigated and a possible recall issued on all motorhomes of this type with the overhead bunk..

Large slide will come out from wall of coach four to six inches while parked and driving. National safety problem issued by manufacturer. Repair was done, lasted five months then reoccurred. Trying to get fixed again. Out of service total of six months and counting. Dealer and manufacturer know no recourse will be taken. Filed CAP RV told not eligible due to being second owner. Problem was not disclosed prior to purchase. One year warranty did not transfer. Please help.

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 the slide and is very heavy. The mechanism to secure the slide failed probably due to the slide being weighted inappropriately. Tiffin is aware of the situation and has not changed the design to a heavier slide.

The contact owns a 2011 Tiffin Allegro Bus. The contact initially received notification of NHTSA Campaign Number: 12V526000 (Structure) and the RV was taken to a RV dealer and serviced. Recently, the contact took the RV to an independent mechanic for routine maintenance check and was informed that the part used to repair the exhaust shield, had rubbed against the exhaust pipe and created a hole. The mechanic informed the contact that the failure could have led to a fire. The mechanic also informed the contact that the bedroom floor located underneath the exhaust was charred due to the failure. The manufacturer was notified of the failure and acknowledged the defect. The RV was not repaired. The failure mileage was approximately 48,000.

tire size 275/80/22.5 Driving down highway 301, driver side steer tire’s side wall blew out with no warning. My motor home made a hard left, luckily no one was in that fast lane. I managed to recover control and started to head to the shoulder of the road. Before I could reach the shoulder the rim cut the tire and threw it off the rim and into the highway. This put my life , my wife and anyone on the highway’s life in severe danger!!! I called michelin and their rep inspected the tire and felt the tire was run low. I completely disagree. All tires were checked that day and if this steer tire was low it would have pulled to the left!!

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 data being presented to the driver makes catastrophic tire failure more likely. Freightliner corporate and their dealers basically say they know the system is not operating appropriately and there is nothing more they can do.