BMW Questions? Ask a BMW Repair Expert for Answers.
Hi Im David, thanks for visiting the site. if the fan randomly comes on then goes off, its either a bad blower motor, loose connector to the blower motor or a loose connector to the blower motor resistor module. have your son turn the fan switch on to high. move the connector to the blower motor around with his hand to see if it starts working. let me know if it starts working.
is it an E36 or E46?
hello? do you still need assistance?
hello are you still needing assistance?