Auto start blower fan will not turn off?

This sounds like the IPDM has gone out but there are 7 fuses that run the system we need to check first. Here is a guide to help and the fuse locations as well. Start with fuse # 30, 14, 25, 17 and 27 in the fuse panel on the lower left side of the dash fuse panel. This guide will help please check the fuses with the key on:

https://www.2carpros.com/articles/how-to-check-a-car-fuse

If these are okay, please check fuses #53 and #48 in the IPDM if these are okay, we should do a CAN scan to confirm the IPDM failure you can get a CAN scanner (Controller Area Network) from Amazon.

Here is a video to show you how:

https://youtu.be/u-4syLc-ifQ

and

https://www.2carpros.com/articles/can-scan-controller-area-network-easy

Here is a list of CAN scanners starting at about $25.00 on Amazon:

https://amzn.to/3DBMlc7

Here is the location of the fuses and how to change out the IPDM which is easy because it-self learns. Check out the images (below). Please let us know what you find. We are interested to see what it is.