Technical Service Bulletin 21N03-S1 — 2018 FORD EXPEDITION
ENGINE AND ENGINE COOLING
Bulletin Details
| TSB ID | 21N03-S1 |
| Manufacturer | |
| Vehicle | 2018 FORD EXPEDITION |
| Component | ENGINE AND ENGINE COOLING |
| Communication Date |
Bulletin Summary
In some of the affected vehicles, an undesirable noise may develop from the cam phasers in the 3.5L GTDI engine. This noise might occur as a rattle when starting the engine after the vehicle was turned off for an extended period of time or as a knocking noise when the engine is idling after it is warmed up. These concerns should be addressed by the updated calibration provided in FSA 21B10. However, for peace of mind, Ford is providing an extended warranty for customers who receive the PCM update under program 21B10 prior to December 31, 2021 and continue to experience cam phaser noise after receiving that PCM update, A cam phaser that has developed an undesirable noise does not affect the vehicle safety, performance, or emissions.
About Technical Service Bulletins
A Technical Service Bulletin (TSB) is a document issued by a vehicle manufacturer to its dealers, describing a known issue with a specific vehicle or set of vehicles and the recommended procedure to fix it. Unlike recalls, TSBs are not mandatory and are typically only performed if an owner reports the related issue. However, TSBs can be an indicator of common problems with a vehicle.
Other TSBs for the 2018 FORD EXPEDITION
TSB 25-2476
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SAN Vol1 Issue2
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SSM 50571
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SSM 50571
LATCHES/LOCKS/LINKAGES
21N03-S3
ENGINE AND ENGINE COOLING
21N03-S2
ELECTRICAL SYSTEM:ADAS:CONTROL MODULE
18N01-S2
EQUIPMENT
20N08
EQUIPMENT
TSB 20-2253
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