Adblue capacity not changing after refill

[ShireMan]

Yet another odd one. Picked the car up, E Class 220d 2016, had about 500 miles showing on Adblue, added a 5 litre pack, went up to 1800 miles.

I have a busy month's driving coming up, so I bought another 10 litres and some Wynnes, figured that would see me through a few months. Added the tub, but nothing seems to have changed? I don't have the countdown, obviously the 5ltr top up showed? Ive driven about 300 miles since I put the 10 litres in.

I have an icars V2, anything I can use on that to check? Is this car in trouble?

I’ve found that for Ad-blue filling, patience really is a virtue. Upon adding(at least 5L), turn ignition on but don’t start engine, go to Ad-blue in settings, wait at least 2 min whilst it re-calibrates, should then update capacity.
Capacity is about 26L, good luck

 

[OneForTheRoad]

Put the icarsoft on my glc today . So what do I believe? The car or these inept icarsoft scanners . . Range has dropped from 8100 miles on two top up occasions in 2 years.