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      08-12-2021, 05:46 PM   #39
Tomnavigator
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Drives: 2010 335D, V-10 Touareg Diesel
Join Date: Mar 2015
Location: Southwest Louisiana

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hanxter7,
The DEF tank is removed from under the car. Remove the aluminum heat shield, then remove the bolts holding in the DEF tank. It all drops down as one big unit (passive tank, active tank, sensors, etc.). You will have to look where the hoses and wires connect and remove them at their connections (if you plan on reinstalling them). There is a pump located behind the left rear wheel that can also be removed. This is also done from under the car and it is behind a cover (8mm socket for the screws). Note: there is one electric plug in this area that goes to the left rear tail lights. Be sure to plug it back in. Follow the wires and you can easily tell which wire bundle goes to the tail light.
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