1999 360 F1. 12,000 miles. With my foot on the brake pedal and the car in neutral, pulling the reverse lever gently and briefly backwards (as normally would be required) produces no audible and no change to reverse gear. Pulling the lever back gently and holding in the posterior most position produces the transmission light to come on. Again, no change to reverse gear. Although the car is having issues engaging reverse from neutral, from 1st gear it engages reverse with no problems. It's happened a lot more frequently now. Yesterday it occurred 2x, today it occurred 5x. Prior to this, it had never happened. Anybody have any ideas or experience with this?