Just a heads up, I think this sensor messes with the AdBlue system so top it off just in case so you don't get the countdown. I don't know the interval for which it reads the level, but I suspect that this code was keeping it from reading the full tank. I've done a ton of research about this damn thing over the course of this week. Adblue can easily crystallise, if you spilt any on your drive you see it turns white quite quickly. Other thing is it could be a bit of frost stopping the float from going up. It should have given you the 1000 or 1500 miles warning before the 650. Unfortunately it didn’t let you start if it thinks it zero. Pull the old filter, suction the Diesel in the filter housing out, place the new filter in, fill the housing with Diesel Purge and button it up. Pour the rest of the Diesel Purge and suctioned Diesel in the tank. Done. I run LM SuperDiesel at least at every oil change; more often when I remember. It drove in to the facility and no one had paid attention to the indicator and they got locked out of it. It had a codes P20EE (SCR Nox catalyst efficiency below threshold), P229F (NOx Sensor Circuit range performance bank 1), P310E (manufacturer specific using my snap on scanner), P207F ( reductant quality performance) when I brought home. Note: Newer Q7 models don't have an actual 61-Battery Manager but instead have the battery management as a slave under the CAN-Gateway. In these cases, installation of a new battery would require the use of Long Adaptation under 19-CAN-Gateway. Follow the onscreen instructions to enter the Part Number, Vendor, and Serial Number all as one long That'd probably do it. A8 / S8 (D2 Platform) Discussion - Check level / top off transmission fluid - I've read a considerable amount regarding the pros/cons of flushing the transmission, and I'm not sure I want to do a full flush given the potential risks. However, I am interested in checking the level of the fluid and adding more if 8TpNe5. There are several Audi and Volkswagen Self Study Programs that are available that explain the AdBlue and diesel engine systems. This one is good, 941803 Audi 3.0-liter V6 TDI With Clean Diesel System and with a subscription to erWin , you can also find all the factory repair manuals and wiring diagrams, all available for downloading/printing The local VW dealer wanted to drop the Adblue tank and remove the level sensor, pump, etc. I insisted that they check through all the VW service bulletins before they started ripping a 2 year

how to check adblue level audi q7