The 2004 Big Dog Mastiff has 1 NHTSA recall campaign affecting an estimated 1,895 vehicles. Recall repairs are always free at any authorized dealer. Owners have filed 6 complaints with NHTSA, most often about the electrical system. Last updated July 5, 2026.
BIG DOG IS RECALLING CERTAIN 2004 CHOPPER, BULLDOG, RIDGEBACK, MASTIFF, BOXER, AND PITBULL MOTORCYCLES. THERE IS A POSSIBLE LOOSE CONNECTION BETWEEN THE HARNESS CONNECTOR AND THE ELECTRONIC HARNESS CONTROLLER.
Consequence
THIS CONDITION MAY CAUSE THE MOTORCYCLE TO EXPERIENCE INTERMITTENT LOSS OF ELECTRICAL POWER TO VARIOUS COMPONENTS, WHICH CAN LEAD TO, AMONG OTHER THINGS, A LOSS OF HEADLAMP FUNCTION OR A VEHICLE STALL, INCREASING THE RISK OF A CRASH.
Remedy
BIG DOG WILL NOTIFY OWNERS AND DEALERS WILL REPAIR THE MOTORCYCLES FREE OF CHARGE. THE SAFETY RECALL BEGAN ON MAY 24, 2010. OWNERS MAY CONTACT BIG DOG AT 1-316-219-9121.
Complaints by component
ELECTRICAL SYSTEM
4
EXTERIOR LIGHTING
2
Total complaints6
What owners report
Verbatim reports filed with NHTSA, lightly edited for readability and with personal
information removed.
“I bought this bike for my husband at black hills harley davidson,rapid city sd jan 2015. We had to right away get new battery,new ignition switches,we went to go out for a ride last week finally and once again headlight failure, I have found a recall on this issue, harley davidson will not repair,…”
“I bought this bike for my husband at black hills harley davidson,rapid city sd jan 2015. We had to right away get new battery,new ignition switches,we went to go out for a ride last week finally and once again headlight failure, I have found a recall on this issue, harley davidson will not repair,…”
“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…”
“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…”
“Tl* the contact owns a 2004 big dog mastiff. The vehicle was included in the recall associated with nhtsa campaign id number: 10v180000, (electrical system). The manufacturer advised the contact to take the vehicle to an authorized dealer for repairs. The vehicle was taken to various authorized…”
“2004 and other years. The ech unit. Many of these have went bad. The big dog company is not taking responsibility for this. I was hoping to get an investigation started.”
Defect investigations
InvestigationRQ10002 Opened 2010-01-27 · closed 2010-05-10
Motorcycle Stalling
This RQ was opened based on seemingly related owner complaints involving motorcycles outside the scope of 06V-301.During the course of subsequent discussions with the company, we learned that the earlier model year Big Dogs had a problem with the electronic harness control module connector that they'd previously…
Recall, complaint, and investigation records from official NHTSA datasets (FLAT_RCL,
FLAT_CMPL, FLAT_INV), synced weekly. Counts reflect NHTSA records for the 2004 Big Dog Mastiff as of
July 5, 2026. Complaint narratives are consumer-submitted and unverified. This page
contains ads and affiliate links. Full methodology.