AI Damage2021 Tiffin Phaeton: common problems
The maker issued 8 service bulletins for this year. Details by component below, with sources.
Key figures
- Technical service bulletins (TSB)
- 8
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Tires | 0 | 0 | 3 |
| Electrical system | 0 | 0 | 2 |
| Equipment | 0 | 0 | 2 |
| Engine and cooling | 0 | 0 | 1 |
| Exterior lighting | 0 | 0 | 1 |
| Fuel/propulsion system | 0 | 0 | 1 |
| Fuel system | 0 | 0 | 1 |
| Wheels | 0 | 0 | 1 |
Comparison
What to check before buying
- Tires. Tire age by DOT code, bulges, wear pattern.
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Engine and cooling. Radiator and fan after a frontal hit, coolant level and condition, overheating.
- Exterior lighting. Headlamps, leveling, sensors and mounts after a frontal hit.
Manufacturer service bulletins
Bulletin titles as filed with NHTSA.
- Tiffin sent out an addendum to be added to Owner's Manuals that states, "Tiffin Motorhomes recommends that…
Tiffin sent out an addendum to be added to Owner's Manuals that states, "Tiffin Motorhomes recommends that all diesel units be refueled using standard automotive-grade diesel fuel pumps, rather than high-flow…
- 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.
- Faulty DEF sensors that due to shortage were not replaced
Instead engine software was temporarily modified to account for continued operation with a faulty sensor until replacement sensors were available. This campaign will install an engine control module calibration as well…
- Freightliner Custom Chassis Corporation (FCCC), has decided that a defect which relates to motor vehicle…
Freightliner Custom Chassis Corporation (FCCC), has decided that a defect which relates to motor vehicle safety exists on certain model years 2017-2022 Freightliner Custom Chassis Corporation XCM, XCP, XCR, and XCS…
- FCCC XC Valor Tire Pressure Monitoring System (TPMS) - Daimler states that on certain vehicles and under…
FCCC XC Valor Tire Pressure Monitoring System (TPMS) - Daimler states that on certain vehicles and under certain circumstances, the tire pressure monitoring system (TPMS) may display incorrect information such as…
- Tiffin Motorhomes was notified by Daimler Trucks North America on behalf of Freightliner Custom Chassis…
Tiffin Motorhomes was notified by Daimler Trucks North America on behalf of Freightliner Custom Chassis Corporation of a defect that exists on specific model year 2017 - 2022 Freightliner Custom Chassis X-Line chassis…
- Tiffin mailed out a Customer Service Advisory on a Daimler Field Service Campaign (SF637) as a curtesy
The subject is FCCC Viper Low Voltage Display.
- Customer Service Advisory for Cummins Recall #21E032 and Freightliner Recall #21V-326 for High Pressure…
Customer Service Advisory for Cummins Recall #21E032 and Freightliner Recall #21V-326 for High Pressure Fuel Rail - Freightliner chassis units built on by Tiffin.
Other years of this model
Questions and answers
What are the most common problems with the 2021 Tiffin Phaeton?
There are no owner complaints in the NHTSA data for this year; the data comes from 8 manufacturer service bulletins.
How many service bulletins (TSB) were issued for the 2021 Tiffin Phaeton?
NHTSA lists 8 manufacturer service bulletins for this year. A bulletin tells dealers how to diagnose or fix a known issue; it is not a recall.
Should I buy a 2021 Tiffin Phaeton from a US auction?
Owner complaints describe defects, not crash damage. Before bidding, check the components listed above and review the lot photos: VinWind builds a report of visible and hidden damage by VIN.
Other 2021 models
Read also
Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-04.