Have you found out price of getting adblue replacement I’m in same position

Sy Pete did they resolve the light issue as I have same problem. I’m in worry mode as it says 700 miles

3008. 2 litres and on way home last night light came on so went into garage filled up with adblue and light still on and saying 700 mls until engine shuts down I bought warranty thinking no problem as only done 1500 mls since purchased phone they put on machine to see if only diagnostic £120 if it i...