Originally Posted by ivak_86

The pump works, i have tested it -car off-with ignition key On and gas pedal to the floor for 10-15 seconds and the pump starts.And when turn off the car the pump continue to work about 1 min.By the way when i got the car the aux.heater didn't work and after i read with bmw scanner there was a error "circulation pump" i replaced it and the heater start to work perfectly. If the pump doesn't work it will not start the heater. But the heater makes the all 30 min cycle when turned on- but now blows cold air.