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February 19, 2021 Service bulletin

Technical Service Letter for Gen 5 DD15 Instrument Panel Oil Pressure Gauge Operation

Freightliner technical service bulletin 21TS-04 for 2020-2021 Freightliner Cascadia, 2020-2021 Western Star 4900 and 2020-2021 Western Star 5700 and others.

Bulletin number
21TS-04
Component
Engine and engine cooling
Summary
Technical Service Letter for Gen 5 DD15 Instrument Panel Oil Pressure Gauge Operation. Gen 5 DD15 equipped units have been brought in for service with a complaint of the instrument panel oil pressure gauge not moving during unit operation and/or stuck at 50PSI. The instrument panel oil pressure gauge does not operate the same as with previous engine models. Please be advised, this is normal operation and no further diagnostics are required. Do not down a unit for this complaint.

Owners of these vehicles have filed 3 complaints in the engine category.

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