Electromagnetic coupler on Awd Sienna
So the noise my ears have been hearing coming from the rear of my 11 sienna awd appears to be the electromagnetic coupler that has been talked about a little here and there. I'm sitting at 107xxx miles with warranty long gone so this is going to be on my dime.
Called a Toyota dealership and asked of there were any service bulletins out for the coupler. And they said the part was going to be around $1500.
So having some mechanical skills, and a car hoist, I figured I would ask you all what you thought of my idea to get by from having to drop 1500 bucks in a small part.
If I understand the concept of the electromagnetic coupler right, part of the coupler is attached to the drive shaft coming from The front transfer case. This drive shaft is always getting power and turning from the transfer case. The second part of the coupler is attached to the rear differential. When the car senses that the rear wheels need power the couple engages and joins together to transfer the power from the already spinning drive shaft to the differential.
So with that said, I'm pretty sure there is a bearing in the coupler that's making the noise and is going out. I wanted to see if removing the drive shaft and essentially turning my van to a fwd, would help hold off the inevitable of that baring completely failing until I can get the money to buy the replacement part. It's spring time in the Midwest so the need for awd is not as crucial. I'm guessing i will need to pull the fuse for the awd system so that the car will have a idea that it can't send power to the rear?
Anyway sorry for the book, any help or insight will be appreciated.