Seized cooling fans.

[chun]

But I think the fan kicks in even when heating not only cooling.

That’s not how fan work. Fans push cold air from outside over a radiator.

for heating there is a heating pump

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[FrostDrive]

Ok This is a little confusing
Maybee easier to see if it's working when the temp is hotter. It is quite cold.
I will continue to look and see. It doesn't seems to be any sure way to se if this fans are actually working now in the cold temperature. If I have understand this correct.

 

[carlos vilarinho]

Seized cooling fans.

Having seen numerous threads on various Taycan forums regarding seized cooling fans I decided to check my own. The left cooling fan for battery management was seized solid. The right cooling fan for the air conditioning was also seized solid.
I contacted my local Porsche dealership, after inspection they declined the warranty claim. Porsche stated “as they are full of dried mud it’s not a warranty issue” I argued it was a defective design and not fit for purpose but got nowhere with them.
Knowing these fans are over £1000 each, I decided to see what I could do with them.
I put the car on a 2 post ramp in my garage. Removed front wheels, wheel arch liners and front bumper. The fans are then fully accessible for removal.
The fan motors were full of mud and road dirt. They are a sealed unit so I gave them a thorough cleaning with a pressure washer and then dried them out with an air blower. Spotlessly clean but still seized, I sprayed the motors inside and out with WD40 and left it to soak. I then worked the fan slowly backwards and forwards until it rotated freely. Another good blowing out with an air blower more WD40 for good measure. At this stage I refitted them to the car and activated them with a snap on diag box. They work perfectly. I then completed the re assembly procedure. Job done.
The whole job took about 4 hours with a text book result.
If anyone is in this position and Porsche won’t warranty it, save yourself a few grand and get an independent to do what I have done.

Hi David, I have the same problem, unfortunately Piwi informed me that both of my fans were blocked, first the one on the right side a few days ago, now the one on the left side too. I've tried to turn them with a screwdriver... but to no avail! Could you please instruct me so that I can remove my fans and clean them. They are probably blocked by some stone or debris from the road! You mention here that to remove the fans it is necessary to remove the entire front bumper, so just the wheels and wheel arches will not be enough to be able to clean them and in turn try to free the fans...???? How did you reactivate the fans? At the beginning of the process, you removed the positive terminal from the 12V battery... Or was it not necessary? In the front bumper, in addition to everything, we have the proximity sensor (Acc sistem) and the front camera...

 

[Noan]

I just had my fans changed under warranty. Left side one failed and they did rightside was also.
There is a TSB to change the fans because debris from the wheel arch block them. The new ones are more protected.

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