Adblue Tank Issues

[robbie2015]

Are the electronics really the problem, or just Citroen being a bit pig headed in not providing an adblue tank that is cleanable? I have a low level UREA light that won't reset even though my tank is nearly full. Citroen Australia told me to take the car to my local dealer for diagnostics to see if Citroen would offer a contribution to the repair. Just got a call from the dealer. The results were sent to Citroen Head Office and they said NO! Then I had to weadle out of them what they thought the problem was. Crystallization of the Adblue affecting the level sensor and Adblue injector. I asked how they worked that out from diagnostics. They said it's just what happens to these tanks. "Had three last week". So, what level was diagnostics saying was in my near full tank? Can't tell when level sensor is gummed up with crystals. I insisted they show me the results of the diagnostics. They refused because it's confidential??!! Seriously?? It's my car. I'm entitled to know what you found. NO! Confidential! I then said - Oh, I see, Citroen is hiding something. The conversation just got very much worse after that. What a total joke this all is. And if indeed crystals have formed on the level sensor, then why can't these tanks be cleaned with a solvent or something so the tank will last another 80K? In frustration, I've sent a complaint to emission standards at the EU Commission about allowing companies to build adblue tanks that can't be serviced or cleaned when it is known that Adblue can crystalize. It's all well and good to reduce NOx emissions, but at the cost of sending all these adblue tanks to landfill because they get dirty?? Who knows where that will go. Just a further note that these crystals (if that is indeed the problem) haven't formed due to low temperature or a faulty heater. I live in Queensland in Australia which is tropical. In the meantime, I recently discovered Forte and Wynn's have produced a product that will clean adblue crystals inside the tank and hopefully release the level sensor. I've ordered a bottle and I'll let you know how it goes.

[RichardW]

The issue with the tanks is not the tanks themselves - rather it is the electronics which are supposed to be outside of the tank envelop, but AdBlue gets into the electronics space somehow, and corrodes all the boards and wires causing havoc. In their wisdom PSA designed it as a single unit, presumably to outsource manufacture and ease installation so the only official solution is a replacement tank (which of course replaces the electronics that are at fault). There is, or used to be, a guy in Portugal offered a repair service, so it must be possible to source the parts to repair, but where from I don't know. In Europe you can get replacement tanks at 2/3 the dealer cost, and fitting is not too hard; still a dent in the wallet though....

[GiveMeABreak]

I've also ordered a few bottles of Wyn's which has just arrived.

I plan on adding the necessary quantity for a full tank (17 litres) to my filling jug and then top up the Adblue tank. Then in future, I'll dose the new 10 Litre retail Adblue container with the correct amount of Wynn's and just continue topping up the Adblue as normal, knowing it has the anti Crystallisation additive in the mix already.