2003 Mercury Mountaineer Exterior lighting Problems
- Complaints
- 2about this part
- Share
- 1%of 152 total for the year
- Median mileage
- 16,400miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 2 complaints about the exterior lighting of the 2003 Mercury Mountaineer, 1% of the 152 complaints for this model year. Where a mileage was given, the median is 16,400 miles.
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.
“Intermittently the brake lights staying lit after vehicle is turned off and key is removed. Likely that this failure also caused the brake lights to remain lit while driving, rendering the signal ineffective. Lights actually stayed on two occasions causing a dead battery once. Lights were noticed the second time, and wiggling the brake pedal extinguished all three indicators. Dealer replaced the brake light switch under warranty.”
NHTSA complaint #10018718, filed 2003-05, 16,400 miles“The inside dome lights and the lights on the outside side mirrors do not go off until 15 to 20 min's after it has been alarmed this has run down my battery I had to buy a new battery.”
NHTSA complaint #10459912, filed 2012-05Exterior lighting: other model years
Other parts of the 2003 Mercury Mountaineer
59 complaintsTransmission and drivetrain
42 complaintsElectrical system
11 complaintsBrakes
10 complaintsEngine cooling
10 complaintsSuspension
10 complaintsAir bags
9 complaintsVehicle speed control
9 complaintsFuel system
7 complaintsVisibility (wipers, defrost, mirrors)
7 complaintsLatches, locks and linkages
6 complaintsOther or unknown
6 complaints
← All problems reported for the 2003 Mercury Mountaineer
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Nov 1, 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