My car was jumped incorrectly. The car seems to operate just fine, but the fan does not blow. When the ac or heat is turned on (to any level), nothing seems to be blowing out of the vents. The fuses were checked visually and several replaced. One of the fusible links was removed and replaced (one of…

Yes, thats a correct assumption. One of the fuses in the module is the 50A fuse for the blower.

Okay, that makes things simple by not having power from the fuse. The trouble is most likely at the connection where the blue and white wires are shown in the diagram to connect together. I don’t know where that is but @Nevada_545 may have that info.

Looking at the fuse assembly in post # 20, I don’t see a blown fuse segment, I believe it is the second one. With no blown fuse and no power on the blue wire, the damage must be in the fuse box. Examine the connections below the fuse assembly.

@Nevada_545 , it seems that the picture of the meter shows the probes are connected to connector A3. Do you know where connector A4 is at, which ties the blue and white wires together for power to the blower?

Connector AF4 is the one in the picture, the back side of the connector should be the white wire.

Okay, I follow you. If that is the case then it seems that the black wire going to that same connector isn’t shown in the wire diagram, that I can see at least. I assumed that the connector was A3 since the drawing shows the same two wire colors that are seen in the picture.

Sorry for all the confusion. I am glad we narrowed down the culprit, but am worried about this next step. Do you think this is a possible DIY repair or will it need to be taken to a shop.

It should be pretty easy to find the problem and fix it. You are just trying to find a bad connection that is between the fuse and the connection to the blower motor. If that blue wire your meter probe is on, is the correct blue wire that ties to the fuse, then you just need to find the other end of…

Like in your opinion do you think we will be replacing a part of the fuse box, or the wire from the fuse box to the connection, or something else? I haven’t had many (if any) issues with the steps up to this point, but also don’t want to sign up for taking apart the entire of the vehicle.

I think you can fix the issue without having to purchase anymore parts. It is just a bad wire connection. Hopefully you can get to the other side of that fuse module that has the wire connections to it. Usually you can unclip things in order to get access to the other side. A picture of the fuse mo…

2010 Lexus RX 350 — fan won’t blow after jump

Maintenance/Repairs

lilithlex July 16, 2020, 1:55am 51

Ok, so before replacing the fuse I followed both of your directions and determined the high current flow was caused by the blower motor. I replaced the fusible link and the blower motor and SUCCESS! the fan is blowing and on this hot summer day I could not be more thankful for you twos information and experience.

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2010 Lexus RX 350 — fan won’t blow after jump

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