Blower keeps running when car is shut off only way to stop it is to disconnect battery

Most likely the resistor has shorted to hot. It is close to the blower.

posible blower resystor and relay is all une piece mounted nes blower motor

the blower resistor should be your problem

you may have lost the security code,bad switch,short in fuse box,bcm,imm module. you need a service manual and volvo scan tool to really diag.

I think you need to study about:

Closed or Completed Circuits
Open Circuits
Short Circuits

NO ONE has any idea what a short circuit is

If you had one, you would have a blown
fuse or burned up something

Blower relay stuck

I think I would disconnect the blower motor relay. If the blower stops, then chances are that the Relay is stuck and keeping the power on.

Try Autozone or Advance for the Relay. They often have the small parts and a photo or location of where you can find it on your car.

Hi, the likely problem is a shorted blower relay. Unfortunately, your relay is integrated into the motor/resistor assembly, so you would need to replace the whole thing to fix it. You can disable the blower high setting by pulling out the IGN3 fuse under the hood, but I'm not sure the car will run without that fuse. At least you wouldn't have to disconnect the battery to keep it from draining. Please let me know if you would like procedures to replace the blower motor assembly, and thanks for using FixYa.

doesnt make sense, you went from giving gas to keep running ,to switching blower motor,Heater blower motor i assume? to replace alternatoer? i'm lost, blower motor has nothing to do with the motor running or not. the alternator charges the battery in which you need power to run the electronics for ignition. make sure battery has full charge. now maybe your fuel shut off switch has triped.( located on passenger side firewall inside trk. remove lower side panel and you will see a black box with a button on it it should be pressed in if it is not then no fuel is getting to engine.press and attempt to start.

Replace the blower motor, comes with the speed module.