The following vehicles have been identified by ROADMASTER as having full-time ‘active’ power braking systems:

   • Ford C-Max
   • Ford Escape hybrid (through '08)

   • Hummer H3
   • Mazda Tribute hybrid
   • Mercury Mariner hybrid
   • Lexus GX 470  
   • Toyota Tacoma

brake pressure reducer

   Vehicles with active braking systems are designed so that even when the engine is off, the braking system is still active, thus requiring minimal pressure to engage the brakes.
   If you already own a BrakeMaster, the Brake Pressure Reducer is an excellent choice as a braking solution. If not, consider an InvisiBrake, which is the only ROADMASTER braking system that works right out of the box with most vehicles which have full-time ‘active’ power braking systems. If either InvisiBrake or the Brake Pressure Reducer is not installed, the towed vehicle will brake with excessive force, which will damage the tires. The braking system may also be damaged; other consequential, non-warranty damage may also occur.
  Other vehicles may also have these systems; this bulletin will be updated to include them as they are identified. However, ROADMASTER cannot guarantee to immediately identify all vehicles with active braking systems. Accordingly, it is the owner’s responsibility to determine if the vehicle being equipped with a BrakeMaster has an active braking system — refer to the owner’s manual or the dealership.