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Exterior lightingPart report

2004 Big Dog Mastiff Exterior lighting Problems

Complaints
2about this part
Share
33%of 6 total for the year
Median mileage
12,000miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 2 complaints about the exterior lighting of the 2004 Big Dog Mastiff, 33% of the 6 complaints for this model year. Where a mileage was given, the median is 12,000 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.

“The electrical system had intermittent problems since the bike was new. Headlight would flicker on & off, rear tail lights flashed on & off. Nothing was found when bike was taken to local dealer for routine maintenance. Ehc module completely failed now and bike will not run. Told the replacement part is not yet available and when it is, it will cost well over $1000.00 to repair and big dog refuses to cover it and said sorry, bike is out of warranty . I have never been contacted about a recall.”

NHTSA complaint #10374072, filed 2011-01, 12,000 miles

Related service bulletins

Exterior lighting: other model years

YearComplaintsShare of year
2004233%

Other parts of the 2004 Big Dog Mastiff

Electrical system
5 complaints
Transmission and drivetrain
1 complaints

← All problems reported for the 2004 Big Dog Mastiff

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