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335d Urea Tank Malfunction

Discussion in 'E90/E91/E92/E93 (2006-2011)' started by Mil.flyer, Sep 16, 2013.

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    I walked into the garage the other morning to crank up my 2011 335d and found a large puddle of urea fluid on the garage floor. My first thought was I must have damaged the tank from road debris although I didn't recall hitting any.

    Off to the dealer where no visible damage was noted. They didn't offer any explanation other than to say they "repaired" the malfunction by replacing the entire tank assembly. This was the second replacement. The tank was replaced three months ago to address a recall of the SCR valve. I was told this valve was in the tank and the only way to change it was to replace the tank. So now the urea tank has been replaced twice.

    I picked up the car from the dealer after work today and the fuel quantity gage read 10 miles remaining (the car had a 1/4 tank of diesel when I dropped it off). I drove to the first diesel pump I could find but the tank filler port would not accept the nozzle (yes, a standard low sulphur diesel highway pump). Promptly drove it back to the dealer and they are going to have the mechanic look at it tomorrow. The metal tab covering the fill neck of the fuel tank would not give way when poked with an ink pen inserted into it (or a diesel nozzle). In 30K miles never saw that happen before.

    Has anyone else experienced this problem with the urea tank? Love the 425lbs of torque but I'm frankly leery of the potential maintenance bills when the car is no longer under warranty.

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