NHTSA service bulletin

NHTSA Service Bulletin 10177886: 2018-2020 Lincoln Navigator

Official manufacturer communication context for 2018-2020 Lincoln Navigator, with affected products, buyer checks and links into Carchieve recall, problem and VIN research.

NHTSA service bulletin 10177886 summary graphic for 2018-2020 Lincoln Navigator
10177886NHTSA document ID
Manufacturer communicationcommunication type
1affected product rows
82/100quality score

Reviewed June 2026 from NHTSA manufacturer communication and service bulletin records. Carchieve is independent and not affiliated with any vehicle manufacturer or government agency.

Quick answer

Some 2018-2020 Navigator vehicles may exhibit excessive oil consumption with no visible oil leaks with or without diagnostic trouble code (DTC) P0365 and/or P0369. Engineering is working to implement a PCM calibration update for this condition. In the interim, clear the DTCs with the appropriate Ford scan tool, top off the oil to the top of the full range on the dipstick and schedule a follow-up appointment with the customer for late September 2020. Advise the customer that a repair is expected to be available in September and remind customers to follow the Owner's Manual to check oil level. Dealers are requested to contact all customers that were previously scheduled to have this service performed in July and reschedule for late September.

What this bulletin may mean before buying

Treat this as service research, not a verdict on one car. Before you buy, compare this communication with official recall campaigns, model-level owner complaint patterns, and the exact vehicle’s VIN-decoded specifications. A bulletin can help you ask a seller or dealer sharper questions about software updates, known repairs, warranty extensions and service history.

Affected products listed in this communication

MakeModelModel yearsBuyer note
LincolnNavigator2018-2020Ask for service records and run the exact VIN before purchase.

Buyer checklist

  1. Run the 17-character VIN and confirm the year, make, model, engine and equipment match the listing.
  2. Check recall campaign pages for safety actions that may require dealer repair.
  3. Compare this bulletin with common problem pages for the same model and component area.
  4. Ask the seller or dealer whether the bulletin procedure, update or inspection has already been completed.
  5. Use the used-car buying checklist and get an independent inspection.

Frequently asked questions

What is NHTSA service bulletin 10177886?

Some 2018-2020 Navigator vehicles may exhibit excessive oil consumption with no visible oil leaks with or without diagnostic trouble code (DTC) P0365 and/or P0369. Engineering is working to implement a PCM calibration update for this condition. In the interim, clear the DTCs with the appropriate Ford scan tool, top off the oil to the top of the full range on the dipstick and schedule a follow-up appointment with.

Is a service bulletin the same as a recall?

No. A recall is a safety campaign with a required remedy for affected VINs. A service bulletin or manufacturer communication usually describes diagnostic, repair, software, warranty or service information.

How should a used-car buyer use this bulletin?

Use it as a research signal. Compare it with recalls, owner complaints, service records, a VIN report and an independent inspection before buying.

Check the exact VIN before you buy

Model-level pages show public safety patterns. A full VIN report helps confirm the exact vehicle, decoded specs, recall applicability and buyer checks.

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