Where is the fill plug on the transfer case for the w164 ml350? I see the drain plug on the lower back left. There is a similar plug just above it to the right. That it?

I find lots of DIY articles for the w163 transfer case. W164 is proven more difficult to find.

If anyone has the play by play for this procedure, please throw the link in your reply. Thanks

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Jeff
'87 300E
'92 400E
'06 ML350