The Tech then reset the Add blue sensor = no change, second try = no change, third try the sensor registered an increase of 1000 miles. (Total range 4000 miles) on the drive home the sensor obviously recalibrated/ measure the tank again, which increased the range by a further 1500 miles, so I can confirm what @Loz says. I've just a week ago repaired couple years older vw with faulty AdBlue injector. After replacing faulty injector and clearing codes red SCR warning light still on and starter not actuates. Reset SCR lock gives additional 25 starting times and/or 50km mileage. Volkswagen’s recharge AdBlue light on!!! And, you don’t what to do about it. Well, this presentation covers everything you need to know about a warning light like this. 2012 VW Touareg V6 TDI Problems So, two weeks ago we bought a brand new 2012 vw Touareg TDI out of the showroom. The third day we drove it to the grocery store. As we were leaving the parking lot, the system notification light came on. It stated that the adBlue could only go 700 more miles before running dry. Two days later it wasnt there. FGUKj.

how to reset adblue warning vw