On certain motorcycles, a warped bus bar within the voltage regulator can cause a short circuit.
Electrical system
Bigdog Mastiff Electrical problems by year
2 complaints filed with NHTSA about the Bigdog Mastiff's electrical system. Dead batteries, warning lights, wiring, alternators, infotainment and electronic module failures.
Electrical complaints by model year
Electrical recalls
On certain motorcycles, the electronic harness control (ehc) module can fail resulting in a total shut down of the vehicle's electronic power.
On certain motorcycles, the ignition modules are oriented within the battery tray in a way that makes the ignition module susceptible to vibration.
Latest Mastiff electrical complaints
Tl*the contact owns a 2004 big dog mastiff. While driving 45 mph, the headlights went out. The contact pulled into a gas station and inspected the fuses and circuit breakers. After sitting, the headlights illuminated. He stated that the headlights operated intermittently. Occasionally, the high beams would illuminate. The contact has not yet taken the vehicle to the dealer. The manufacturer stated that they had an issue with a lot of the vehicles and the control boxes were on back order. The current mileage was 10,200 and failure mileage was 8,000. Updated 04-09-08 *bf
Several events have been listed and submitted to the dealer. The dealer has attempted many times to fix the problem, with no success. The dealer sent the motorcycle to the headquarters in another city, still unable to keep the bike from pouring oil out at high speeds. This is getting oil on the rear tire, rear wheel and rear brake. It has since been discovered that the dealer that sold the motorcycle was not an authorized location, nor was their mechanic. But their main store is authorized. I have been forced to ask for legal help. Big dog has ignored my pleas for help, as has v twin city, the dealer. *Jb
Source: U.S. National Highway Traffic Safety Administration (NHTSA) complaints and recalls, checked daily. Complaints are owners' own reports and are not verified. How we use the data