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      04-29-2019, 11:21 AM   #28
turboawd
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Drives: 2015 X5 35i
Join Date: May 2015
Location: United States

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Quote:
Originally Posted by markslc1 View Post
No codes. So thinking it's something else
But you said it had those codes in the past?
Just change your plugs first. It's easy and cheap.
There's 2 plugs on transfer case. One to drain and another to fill. Takes less than a quart of fluid if I remember correctly. And it's expensive if you buy the fluid from a dealer. Supposedly it's a GL4 lubricant.
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