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.
SB-77
Service Bulletin/Repair Instructions
TriMark brought to Tiffin’s attention that on certain 2025 and 2026 Allegro Breeze; 2025 and 2026 Allegro Bus; 2025 and 2026 Allegro RED 360; 2025 and 2026 Byway; 2025 and 2026 Phaeton; 2025 and 2026 Zephyr Motorhomes that are equipped with PTL entry doors with a TriMark entry lock, owners may experience a lock out situation. TriMark has notified Tiffin Motorhomes that there is a possible condition where the exterior entrance door handle mechanism can bypass the inside linkage causing a lock-out situation whereby the door cannot be opened from the exterior handle. TriMark is replacing all involved entry door inside handle assemblies with new inside handle assembles. PTL Engineering states these locks are installed in entry doors with a serial number #068849 through #072552.
MCD-009
Other
Stopped using the lights we had been using due to expense. Replaced with these, but these new lights have to be wired in instead of just clicking in. These are the instructions to wire in.
CSA-40
Other
Daimler Truck North America on behalf of its Freightliner Trucks Division and wholly owned subsidiaries have issued NHTSA #24C-392 and #24V-393 on certain 2025 model year vehicles. The affected vehicles may be missing the snap ring on the preset hubs and/or have unbent retainer tabs on the conventional 4-piece fastener hubs. This could allow the wheel hub fasteners to loosen. Wheel separation may occur resulting in an increased risk of loss of vehicle control and a crash.