2003 Lincoln Navigator Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 2003 Lincoln Navigator

2003 Lincoln Navigator Problems

Check Engine Light due to Water/Coolant in Spark Plug Recesses

An illuminated Check Engine Light may be caused by an engine misfire due to water or engine coolant in the spark plug recesses.

Problems With EGR System are Common in High Dust Areas

In high dust areas, problems with the EGR system are common. The filter for the EGR solenoid may plug and cause the EGR to activate when it should not; this can cause the engine to stall. The dirty filter should be replaced to correct this concern.

Adjusting AC Clutch Air Gap

Checking and adjusting the AC compressor clutch air gap can extend the service life of the AC compressor.

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2003 Lincoln Navigator Questions

"Check charging system" error comes on while slowing, braking or coasting. (1 answer)

"Check charging system" error comes on while slowing, braking or coasting. Today, while accelerating, radio and instrument panel turned off twice.

Alternator is less than a year old, but tested, and it was at 14.2.

Any ideas?

Can't find the reset button for the fuel pump.. (2 answers)

Changed the fuel pump, fuel filter, crank sensor,and relay. Gas is still not pumping.

OBD FUSE ON 2003 LINCOLN NAVIGATOR WHERE IS IT LOCATED,WHICH NUMBERED FUSE IS IT (1 answer)

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2003 Lincoln Navigator Reviews

I have had to rebuild my Transmission and Motor.!!! The truck is currently at Five Star Ford having the fuse panel replaced due to poor design where the panel is taking in water burning out the main relay switch. The automatic door locks stopped working. Due to water leaking in.. the sun roof stopped working. This truck is like some women..they may look good but inside she ugly. More trouble th...
probably had the potential to been one of the best full size suv. However my 2003 had minor electrical sensors failing from day one, like doors then runing boards then suspension replaced rear and compresssor. Dealer was inept changed sensors when the air bags was gone. now i have replace four coils and spark plugs engine still running lean. So they told me to get rid of the vehicle after they ...
Some problems with suspension when it get cold the truck won't raise up right away! I don't know what to do about that.

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