Defect
On certain motorcycles, there may be a problem with the front brake master cylinder. This could cause the front brake to progressively apply (automatically) until the motorcycle stops. If this happens, when the motorcycle slows down, the rear brake light would not turn on.
Safety Risk
A motorcycle that brakes without turning on the brake lights could cause a following driver not to recognize that a vehicle ahead is slowing. This could increase the risk of a crash.
Remedy
The company will notify owners by mail and instruct them to take their vehicle to a dealer to inspect, and if necessary, replace the front brake master cylinder.