E53 X5 Auxiliary Fan test?

[Bimmernut]

Originally Posted by PalmSpringsE534.6

Topaz makes a brushless aux fan. I think they are still available on Amazon.

Did you have any trouble with the car accepting this part? I read some Amazon reviews about how the the brushless fan wouldn't assimilate with the PCM and required a reset? thanks in advance.

[PalmSpringsE534.6]

Originally Posted by Bimmernut

Did you have any trouble with the car accepting this part? I read some Amazon reviews about how the the brushless fan wouldn't assimilate with the PCM and required a reset? thanks in advance.

I think you might mean with the DME (main computer) and not PCM. You'll need to clear the codes in your DME to ensure it checks for the "start up" sequence after you install the fan. If you're unsure, I would recommend you put the fan on top of your engine, connect it to the wiring harness, clear the code and then either start the car and set the AC to on....or if you have INPA or other tool you can activate the fan to check it before you take off the bumper cover and the like.

[Bimmernut]

Originally Posted by PalmSpringsE534.6

I think you might mean with the DME (main computer) and not PCM. You'll need to clear the codes in your DME to ensure it checks for the "start up" sequence after you install the fan. If you're unsure, I would recommend you put the fan on top of your engine, connect it to the wiring harness, clear the code and then either start the car and set the AC to on....or if you have INPA or other tool you can activate the fan to check it before you take off the bumper cover and the like.

So far this hasn't tripped any codes whatsoever, so there is nothing to clear... I have a basic, Harbor Freight scan tool - which I know I need something different. Am I going to have an issue? Can I somehow clear any other codes via the cluster sub-menu perhaps?

[wpoll]

Originally Posted by Bimmernut

So far this hasn't tripped any codes whatsoever, so there is nothing to clear... I have a basic, Harbor Freight scan tool - which I know I need something different. Am I going to have an issue? Can I somehow clear any other codes via the cluster sub-menu perhaps?

If the fan has in fact failed, there will be a BMW-specific error code in the DME - this code may need to be cleared before the new fan will work. You'll need BMW software tools (or a Foxwell etc.) to clear this code.

[Effduration]

Originally Posted by wpoll

If the fan has in fact failed, there will be a BMW-specific error code in the DME - this code may need to be cleared before the new fan will work. You'll need BMW software tools (or a Foxwell etc.) to clear this code.

My fan failed in my ‘06 3.0, and I had no codes.

I have Peake, INPA other BMW-specific code readers

It SHOULD throw a code for fan failure, but it doesn’t always do so.

[oldskewel]

Originally Posted by Effduration

My fan failed in my ‘06 3.0, and I had no codes.

I have Peake, INPA other BMW-specific code readers

It SHOULD throw a code for fan failure, but it doesn’t always do so.

Same here. '01 fan failed, no codes as read by my foxwell.