2005 Lincoln Navigator Electrical system Problems
- Complaints
- 4about this part
- Share
- 8%of 48 total for the year
- Median mileage
- 43,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 4 complaints about the electrical system of the 2005 Lincoln Navigator, 8% of the 48 complaints for this model year. Where a mileage was given, the median is 43,000 miles. 1 a fire, according to the filers.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“My 2005 Lincoln Navigator has suddenly stopped on several occasions. It only has 43k miles. The computer stated to check electronic throttle. I took the truck to the dealer and they told me to replace the electronic throttle body. They wanted $500+!! The truck has stopped working several times since. The manufacturer was contacted and they refused to pay! The first time it happened was on the freeway in the fast lane!!”
NHTSA complaint #10267491, filed 2009-05, 43,000 miles“While driving on the highway full speed, the vehicle (2005 Lincoln Navigator) stopped and I then coasted into the emergency lane where I was able to restart the vehicle to drive to safe location. This incident occurred twice before receiving the error code in the car check electronic throttle. There was no warning before stopping luckily I was able to coast to a safe location but this could have been a catastrophic event especially with my children in the car. The car was taken to the dealer and they replaced the electronic throttle body assembly to the tune of $563.85 including labor.”
NHTSA complaint #10255605, filed 2009-01, 90,000 miles“Dt: the consumer stated 2005 Lincoln Navigator was having problems with the suspension and the gear shift. The vehicle has been in the repair shop three times. The manufacturer has not been called. The consumer talked to the dealer, and they could not help him. The first time the electrical work was done, it was fixed. Afterwards, the vehicle has been in the shop the past wee, and nothing has been fixed. No date was set when the vehicle will be fixed. The dealership does not know when the parts will come in.”
NHTSA complaint #10132919, filed 2005-08, 2,824 miles“Fire inside of the motor, behind the engine computer. Upon researching recalls for Lincoln Navigators I found these other recalls online for possibly the same fire issue: Ford has issued a recall for some of its 2021 Ford Expedition and Lincoln Navigator SUVs due to a potential engine fire risk. Over 65,000 2021-year model vehicles manufactured between December 2020 and April 2021 have been affected. We've discovered a vehicle safety issue in some 2021 model-year Lincoln Navigator® vehicles built from July 30, 2020 to August 31, 2021. …”
NHTSA complaint #11584238, filed 2024-04Related service bulletins
- 10181917Oct 16, 2020Some 2003-2020 Expedition/Navigator and 2006-2020 F-150 vehicles equipped with TOD transfer cases may exhibit grinding/clicking/ratcheting noise from the front wheel area. This…
- 10109021Apr 24, 2017When ordering a 2005 to 2008 remanufactured 5.4L 3v or 6.8L 3v engine, spark plug boots may be provided in the packaging. Replace all black spark plug boots from the original…
- 10048099Aug 1, 2012Ford/lincoln/mercury: may have sludge buildup in throttle body leading to less airflow or engine idling rpm fluctuation and hard starts or battery disconnect or dead battery…
- 10019378Jan 1, 2006Diagnostic trouble codes p0340/p0344/p0345/p0349 - 4.6l 3v and 5.4l 3v.
- 10019064Jan 1, 2006Various electrical concerns - 3 block auxiliary relay box 1 chafing - service tip.
- 10017923Jun 1, 2005Service wiring harness replacement guidelines - service tips.
- 10013325Jan 1, 2005Delayed cranking when key is turned to start.
- 10011343Sep 1, 2004Reverse sensing system defaulting off, setting diagnostic trouble codes, or losing communication with diagnostic scan tool.
Electrical system: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2025 | 3 | 23% |
| 2024 | 3 | 19% |
| 2023 | 4 | 57% |
| 2022 | 9 | 43% |
| 2021 | 3 | 9% |
| 2020 | 4 | 13% |
| 2019 | 11 | 13% |
| 2018 | 8 | 15% |
| 2017 | 4 | 13% |
| 2016 | 3 | 12% |
| 2015 | 7 | 33% |
| 2014 | 3 | 18% |
| 2013 | 3 | 21% |
| 2012 | 1 | 8% |
| 2011 | 2 | 22% |
| 2010 | 4 | 25% |
| 2009 | 3 | 30% |
| 2008 | 7 | 23% |
| 2007 | 5 | 11% |
| 2006 | 7 | 12% |
| 2005 | 4 | 8% |
| 2004 | 11 | 13% |
| 2003 | 22 | 17% |
| 2002 | 6 | 19% |
| 2001 | 16 | 20% |
| 2000 | 13 | 12% |
| 1999 | 12 | 9% |
| 1998 | 21 | 11% |
Other parts of the 2005 Lincoln Navigator
12 complaintsFuel system
7 complaintsBody and structure
7 complaintsAir bags
6 complaintsEngine
5 complaintsEngine cooling
5 complaintsTransmission and drivetrain
5 complaintsVehicle speed control
5 complaintsBrakes
3 complaintsTires
3 complaintsOther or unknown
2 complaintsElectronic stability control
1 complaints
← All problems reported for the 2005 Lincoln Navigator
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology