What Transfer case fluid does this vehicle use?

Looks like this vehicle takes gear oil in the transfer case so I attached the info below on this from the manual.

However, I am not sure if this vehicle has a drain plug or not as I am not finding a process from the manual on how to change the fluid.

This is typical for Mercedes because they don't put a lot of stuff out on this type of stuff.

Let us know what other info you need on this. Thanks

The only transfer case that takes ATF is BB00.40-P-0236-12A.

So if you have this transfer case then that is correct. However, I am attaching pictures of the front and rear axle plus the part number of the transfer case that the manual has for this vehicle.

It says the front and rear axles take 75w-85 and the transfer case takes what I attached before with the exception of that unit number above in this post which takes ATF.

It does not say so that is going to be by the VIN and sales codes or a stamping on the side of the unit.

Do you know if this has an off-road package on it or not?

Okay. That appears to be the 750.65 transfer case which would be ATF.

Hopefully you find some stampings that will support either of these numbers.

Have you drained the fluid? We should be able to tell pretty easily by what is in it.

Sounds good. Let us know what you find because it would be nice to confirm which fluid it is.

Thanks

Perfect. That is the transfer case and those are the drain and fill plugs. Based on that, I suspect you are correct that this is the unit that takes ATF.

If it were me, I would get both oils and just return the one that it is not when you drain it.

However, based on this info, I am pretty confident that the ATF is what you will use.

Thanks for the follow up.

Haha. Good point but you will put it in a pan and swirl it and you should see a red tint to it when it is really thin. Think of it like the ocean. In the shallow portions you can see the floor. The deeper it gets, the darker the water. So, you want to have a real shallow portion and you will see the tint to it. The only time that that does not work is if the fluid is so burned that it looks like motor oil. However, if that were the case you would have bigger issues than just changing the fluid.

Correct but that chain is not going to break without it being obvious. I have seen these types of transfer cases fail and it puts a hole in the side of the case.

Basically, if there is enough force to break the chain then that chain will put a hole in something else.

Let us know what you find with the fluid.

Yes. Silicone will work.

However, when you drove the vehicle, was there any banging or slapping noise when you were engaging 4WD?

Those chains are normally not that tight. They are like bicycle chains on steroids. They just transfer the power from one side sprocket to the other and when they are under tension, they tighten up.

If you didn't have any slapping or banging when in 4WD then there is nothing wrong with it.

Was there an issue with the system or are you just performing maintenance?

Also, about the fluid, when you drained it, did it run out like ATF or was it really thick and take a while to drain?

Just from the look of that entire set up, it looks just like every other one that takes ATF.