[1mGator]

Originally Posted by Diesel X5

I plan on doing the same. I just had my DEF tank replaced today under extended warranty as the check engine light came on. BMW says a low freq throttle valve and active tank faults.They found the heater had failed and was all gummed up.So I to am thinking the residual dries and crystallizes plugging things up.

OK everyone, I have a 20111 X% diesel and my question is;

When you replace/refill the fluid does it automatically reset the señsor or do you have to have a resort tool?

Thanks!