Possible Passive Tank Issue (Urea) - BMW 3-Series (E90 E92) Forum

GreekboyD · 04-03-2013, 10:12 PM

Just got my oil change, fuel fuel filter change and urea refill at a buddy's shop tonight. The active tank filled up nicely but the passive tank took very little urea in, if any at all. We tried several times with no luck. Since he's a certified BMW tech, he hooked up his computer to my car and the software showed my active tank full and my passive tank at "49" which fell under the "low/empty" category.

He thinks it might be a clogged valve. I have no real urgency to look into this right now as I can't deal with the hassle of loaners from the dealer. He's looking to see if warranty will cover it and I'll go from there.

Anyone else encountered this yet?

Ron1n · 04-04-2013, 02:46 AM

Quote:

Originally Posted by GreekboyD

Just got my oil change, fuel fuel filter change and urea refill at a buddy's shop tonight. The active tank filled up nicely but the passive tank took very little urea in, if any at all. We tried several times with no luck. Since he's a certified BMW tech, he hooked up his computer to my car and the software showed my active tank full and my passive tank at "49" which fell under the "low/empty" category.

He thinks it might be a clogged valve. I have no real urgency to look into this right now as I can't deal with the hassle of loaners from the dealer. He's looking to see if warranty will cover it and I'll go from there.

Anyone else encountered this yet?

Anything to do with emissions has a 7/70k warranty on it. You're fine if there's something wrong.

BMW_TECH · 04-05-2013, 01:37 AM

The vent has a tendency to become clogged. Lower the tank assembly and clean the vent of the dried urea.

Worst case scenario is that the tank would need to be replaced

135i_vs_ · 04-05-2013, 10:01 AM

Quote:

Originally Posted by GreekboyD

He thinks it might be a clogged valve.

What is the mileage on the car now?
If it is the vent clogged, I wonder how involved is it to get it cleaned out again...

GreekboyD · 04-05-2013, 12:36 PM

Sorry. Meant to say a clogged vent. Car has 31,000 kms on it and parts of the exhaust would need to be lowered in order to get to the urea tank area.

I'd say 2-3 hours of work.

taibanl · 04-08-2013, 09:17 PM

For more information see this attachment...

04-03-2013, 10:12 PM	#1
GreekboyD Major Drives: 2009 BMW 335d Join Date: Jan 2012 Location: Toronto, ON, Canada Posts: 1,382 iTrader: (0) Garage List 2009 BMW 335d [3.75]	Possible Passive Tank Issue (Urea) Just got my oil change, fuel fuel filter change and urea refill at a buddy's shop tonight. The active tank filled up nicely but the passive tank took very little urea in, if any at all. We tried several times with no luck. Since he's a certified BMW tech, he hooked up his computer to my car and the software showed my active tank full and my passive tank at "49" which fell under the "low/empty" category. He thinks it might be a clogged valve. I have no real urgency to look into this right now as I can't deal with the hassle of loaners from the dealer. He's looking to see if warranty will cover it and I'll go from there. Anyone else encountered this yet?
	Tweet

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

04-05-2013, 01:37 AM	#3
BMW_TECH New Member Drives: 2010 335d Join Date: Mar 2013 Location: San Jose, CA Posts: 5 iTrader: (0)	The vent has a tendency to become clogged. Lower the tank assembly and clean the vent of the dried urea. Worst case scenario is that the tank would need to be replaced

04-05-2013, 12:36 PM	#5
GreekboyD Major Drives: 2009 BMW 335d Join Date: Jan 2012 Location: Toronto, ON, Canada Posts: 1,382 iTrader: (0) Garage List 2009 BMW 335d [3.75]	Sorry. Meant to say a clogged vent. Car has 31,000 kms on it and parts of the exhaust would need to be lowered in order to get to the urea tank area. I'd say 2-3 hours of work.