Blower stays on when ignition is turned of.

It sounds as if the blower motor relay is stuck, on your vehicle the relay is part of the blower motor resistor, the resistor is behind the glove box.I hope this helps. Take care. If you have more questions for me about this vehicle or if you just want to say Hi! use testimonial. Thanks

If I remember correctly, There's a blower motor resister that should be mounted in close proximity to the blower motor.

Change your blower motor resistor,it's located next to the blower motor.

blower motor resister located just below blower fan on passenger side . it is hidden by plastic cover

Sounds like a blower motor resistor. Not an expensive part, fairly easy for a mechanic to change. Located usually behind the glove box door.

Not True. I have a 2004 S60 and a std features is that the blower motor will run from 10 minutes to an hour after the engine has been turned off, This is to dry the evaporator in the dash and avoid musty odors.

If it drains your battery dead there are possible issues; 1) a weak battery that needs replacing or 2) a faulty power stage/transistor unit ont he blower fan.

The transistor unit has power and ground and a digital signal from the control unit. When the transistor sticks, the the blower will not stop when the ignition is turned off.

I have the same problem. The motor would stay on after the ignition was off and the car was locked.. then after i took the fues under the hood off to shut it of when i replaced it it just syopped working. now the blower does'nt work at all... if you find a solution let me know

needs blower control module

Per your description, I believe you may have a blower fan relay that is stuck closed.
Remove the relay from the under-hood fuse center and see if the fan stops.
If it does stop, put the relay in slowly and see if you here the relay "click" and the fan come back on.
Let me know.
Regards,

check the electric line going to it, it probably got burnt and fused some wherer.