Vehicle report
Technical service bulletins are instructions a manufacturer sent its dealers about a known fault. They are not recalls and the work is usually not free, but they are the clearest signal of a problem the manufacturer already knows about.
WSB-13
2025 and 2026 Open Trail Motorhomes need to have the 12 volt charging system upgraded in order to extend the battery life for using the motorhome while not connected to an electrical charging system (boondocking).
WSB-14
2025 and 2026 Open Trail Motorhomes need to have the 51 volt charging system upgraded in order to extend the battery life for using the motorhome while not connected to an electrical charging system (boondocking).
WSB-12
Tiffin Motorhomes issued a technical service bulletin to inspect the roof rack for proper sealant on all 2025 and 2026 Open Trail Motorhomes.
MCD-016
Instructions on how to add additional support on the Open Trail Roof Rack to reduce wind noise at highway speeds.
WSB-09
Tiffin Motorhomes issued a technical service bulletin for Open Trail Motorhomes with a 51V battery system and a hydronic heating system. It was found that operating the hydronic heating system on the diesel burner would cause a temporary overload of the electrical system which would shut down. To solve this issue, 2 new DC-DC converters are being installed.
WSB-07
Tiffin issued a technical service bulletin to change the alternator in the Open Trail Motorhome due to a firmware update by Lithionics to change the secondary alternator charging threshold from 800 to 1200 RPMs.
WSB-08
Tiffin issued a technical service bulletin to update the software for the battery management system in the Open Trail Motorhome due to a software update by Lithionics to change the secondary alternator charging threshold from 800 to 1200 RPMs.
WSB-06
On certain 2026 Open Trail Motorhomes, the rear inner tire has valve stem extenders installed that are not compatible with the tires on the motorhome. The current rear inner tire valve stem extenders do not allow air to pass into or out of the tire. Tiffin Motorhomes will remove the current rear inner tire valve stem extenders and install double seal flow through valves. Owners will need to utilize a long neck air chuck or flexible inflator to reach the inner tire. The repair will be at no charge to the customer.
WSB-05
It has come to our attention that on certain 2026 Open Trail Motorhomes, the radar sensor for the active radar cruise control is not correctly orientated. If the sensor's aim is not corrected, this may cause the motorhome to travel at a lower speed when trying to pass a vehicle. Tiffin Motorhomes will replace the existing bracket for the sensor with a new bracket that will hold the sensor in the correct orientation.
Complaint counts are reports filed with NHTSA, not failure rates. A common model collects more of them than a rare one that breaks more often.