There are 1 stored owner reports matching the lighting leading-label group for the 2004 Mercury Mountaineer in our NHTSA-sourced dataset. These are unverified consumer reports and may not reflect confirmed defects.
This group counts stored reports whose component label starts with one of this site's matching prefixes, ignoring case. Each matching report counts once within the group. Components mentioned later in the label or only in the narrative are not searched. How component counts work
Loaded 1 of 1 matching reports.
Open the full vehicle complaint log (all categories)FAILED BRAKE LIGHT SWITCH, FORD PN F00B13480-BA THIS SWITCH FAILED BECAUSE THE BI-METAL SWITCH CONTACT FRACTURED FROM METAL FATIGUE, WHICH CAUSED THE SWITCH TO BECOME INOPERABLE: WHICH CAUSES THE BRAKES LIGHTS TO NOT FUNCTION AS WELL AS PREVENT THE TRANSMISSION SELECTOR TO PROPERLY ENGAGE. AND IN ADDITION TO NOTING THE INTERNAL FAILURE INSIDE THE SWITCH THE CONTACT POINTS INSIDE APPEAR TO BE PITTED. VEHICLE MILEAGE IS ONLY 44,700. THIS SWITCH DESIGN APPEARS TO BE SHARED WITH OTHER FORD AND MERCURY PRODUCTS, HOWEVER IT IS INTERESTING THAT THERE ARE NO KNOWN SOURCES IN THE AFTER MARKET; FORD OEM ONLY ! *TR
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
NHTSA source checks for this vehicle year
Checks are recorded separately for each dataset, not for the whole page. Dates use UTC. A missing check date does not mean no records exist.
Vehicle import recorded: Apr 28, 2026. This is the stored import date, not confirmation that every source was successfully refreshed.