TSB 18998 — Ford and Lincoln Service bulletin
18998 is a service bulletin on file with NHTSA for 2 Ford and Lincoln models, 2006 model years. A TSB is factory repair guidance, not a recall — the repair is not automatically free.
What the bulletin says. VARIOUS ELECTRICAL CONCERNS - 3 BLOCK AUXILIARY RELAY BOX 1 CHAFING - SERVICE TIP.
NHTSA's own summary of the document, quoted from the public manufacturer-communications file.
Vehicles and model years 18998 names
| Vehicle | Model years |
|---|---|
| Ford Expedition | 2006 |
| Lincoln Navigator | 2006 |
Every document filed under 18998
| Document ID | Filed | Type |
|---|---|---|
| 18998 | January 1, 2006 | Service bulletin |
What 18998 covers
Electrical — the component vocabulary NHTSA files this communication under.
Questions buyers ask
What is TSB 18998?
18998 is a service bulletin filed with NHTSA by Ford and Lincoln, covering 2 Ford and Lincoln models across the 2006 model years. NHTSA's summary reads: VARIOUS ELECTRICAL CONCERNS - 3 BLOCK AUXILIARY RELAY BOX 1 CHAFING - SERVICE TIP.
Which vehicles does 18998 cover?
NHTSA's file names Ford Expedition (2006); Lincoln Navigator (2006). A bulletin number can be re-issued against more vehicles later, so check the model-year list on this page against your own.
Is TSB 18998 a recall, and is the repair free?
No. 18998 is repair guidance the manufacturer sent its dealers, not a safety defect finding. You pay for the work unless the vehicle is still under warranty. Recall repairs, by contrast, are always free.
How do I get the full text of 18998?
Take the document ID to a dealer's service desk, or search NHTSA's manufacturer-communications records. This page carries every document ID filed under 18998, its date, and NHTSA's own summary from the public file.
Every number on this page is a count of records in the federal complaint, recall, and investigation files published by NHTSA's Office of Defects Investigation. This page lists only what NHTSA's manufacturer-communications file records under 18998. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.