• On the dashboard (KOMBI) it shows: “Refill AdBlue in 50 km” → this warning is frozen, it never decreases.
  
• On the iDrive/head unit, it shows: AdBlue level ~17L and range ~700 km (which decreases normally as I drive).
  
• I’ve already driven ~110 km since the warning appeared, but the dashboard still shows 50 km fixed.
  

• 29FB00 – SCR system, warning and shutdown scenario: Warning level 1
  
• 29FC00 – SCR system, warning and shutdown scenario: Warning stage 2
  
• 805256 – Active tank SCR fluid level sensor: Echo recognised as faulty
  

• Emptied and cleaned the AdBlue tank, refilled with 14L fresh BMW AdBlue.
  
• Replaced the tank cap (the old one had a broken seal).
  
• Ran ÎŜ†Ä 4.39.20:
  • Cleared DDE & SCR fault memory multiple times.
    
  • Tried Reset adaptations and SCR adjustments/adaptations (active tank + “AdBlue replaced” reset).
    
  • Attempted Initialization of SCR tank system several times → procedure always aborts (doesn’t complete filling/draining/pressure build-up).
    
• After resets and sleep cycles, faults 29FB00/29FC00 always come back.
  

• Dashboard warning is frozen at 50 km (not counting down, even after driving more than 100 km).
  
• iDrive shows AdBlue range correctly and decreasing.
  
• Initialization in ÎŜ†Ä always fails.
  

• Has anyone seen this mismatch before (frozen KOMBI countdown, but iDrive range working)?
  
• Is this definitely pointing to a failing active AdBlue tank module (pump/level/quality sensor unit), or is there another reset procedure (e.g. Tool32 job, ė-šÝ§) that could clear the 29FB00/29FC00 shutdown stages?
  

(09-01-2025, 07:05 AM)ek1978 Wrote: in order to avoid such problems in the future , always use some Anti-Crystal Additive like LIQUI MOLY SCR 21898 for example.