2020 Tiffin Zephyr TSBs
3 Technical Service Bulletins across 2 categories
Engine
2 bulletinsTiffin sent out an addendum to be added to Owner's Manuals that states, "Tiffin Motorhomes recommends that all diesel...
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units be refueled using standard automotive-grade diesel fuel pumps, rather than high-flow commercial truck stop pumps. The fuel delivery rate from commercial truck stop pumps is often too aggressive for motorhome fuel systems, which are not designed to handle rapid fuel intake. Using high-flow commercial truck stop pumps can result in overflow, spillage, premature shutoff, or even damage to the fuel fill components."
Faulty DEF sensors that due to shortage were not replaced.
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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 as confirm and/or install a new DEF header.
Lighting
1 bulletinStopped using the lights we had been using due to expense.
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Replaced with these, but these new lights have to be wired in instead of just clicking in. These are the instructions to wire in.