general problems of the 2001 BMW 530

Electrical malfunction - computer resets while driving turning off lights, stalling motor and all electrical systems. Power returns to normal after 4 seconds of power down. Stored computer values reset to factory defaults which include maintain schedules and indicators. Dealer would not perform warranty maintenance until reset indicators expire. We drove 36,000 miles on original oil until that time when the oil service indicator activated. Requesting odi id # 8016663 to compare fault. First event at 10k miles, second event at 19,500 miles and 3rd on at 35,500 on Jan 30, 2003 after we schedule appointment for service.

Vehicle is subject to loss of power, cruise control and air conditioner failure, and other switches will go out on their own. Dealership is unable to actually correct the erratic performance of electrical system. Please describe details.