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https://forums.ross-tech.com/showth...daptation-FAIL&p=128278&viewfull=1#post128278
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Address 01: Engine (04L 906 056 KN)
IDE03142 Remaining vehicle distance until reducing agent deficiency 5808.580 km
IDE10249 Reducing agent fill level sensor: act. value 84 mm
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For the level sensor I have recorded all the discrete values from 130 mm down to 80 mm on this van (to be precise, I didn't catch value of 108 mm). On another similar type of van (Engine (04L 906 056 KF)) with more kilometers on - again all the discrete values further down to 58 mm with remaining kilometers about 2800 km at refill then.
However, during extremely cold periods (below -20C (when AdBlue is definitely frozen)) the sensors (of both vans) often seem to throw a value of 0 mm. In spite of that the remaining distance counter has not changed noticeably - I'd say rather just slowed down counting down.
The level value seems to fluctuate by few mm's up/down between recordings - so to me it looks like a regular/old type of sensor readings affected just by inclination, temperature etc.