Just purchased a 1990 535 with 101K miles - have been back to the dealer three times for transmission issues. After the car has been ran several miles then cooled (~2 hrs)before running again, the transmission would not engage in reverse. It would eventually "pop" and reverse - tonight, after it "popped" the Trans Program light illuminated.

Have no manual or knowledge of what that means - help so I can describe the problem when my parents take it to the shop... help