ASDM Calibration/ code U112500

[Austrianflyguide]

Hey everyone,
Looking for some help/advice on a 2016 Volvo XC90 T6 Momentum (SPA platform) with 360 camera / Pilot Assist issues after water intrusion under the passenger seat area.
Background:

• Water got under the passenger carpet area where the WAM (Wide Angle Vision Module / 360 camera module) sits.
  
• Initially I lost the 360 camera completely.
  
• Various other modules/functions acted up temporarily (windows, etc.) but most recovered after drying things out.
  
• The camera system never came back.
  

Original module part number:
31471507 (GBV7A)
I purchased a used matching module with the exact same part number and installed it.
Current status after replacement:

• OrBit and XTool now communicate with ASDM/WAM again.
  
• Network topology now shows WAM online.
  
• I can run ASDM calibration procedures.
  
• ASDM calibration reports:
  “Calibration complete – drive vehicle until safety systems re-enable.”
  

However:

• The 360/rear camera image is still black / no camera display.
  
• Pilot Assist still unavailable.
  
• I still get intermittent:
  U112500 – Interrupted Communication with WAM
  

Additional ASDM codes:

• C100154 – Vision System Camera Missing Calibration
  
• C1A6754 – Forward Looking Sensor Missing Calibration
  
• C1A6778 – Forward Looking Sensor Alignment Incorrect
  

Things already done:

• Cleaned all connectors with CRC electronic cleaner
  
• Dried passenger floor area
  
• Verified power/communication came back
  
• Cleared DTCs multiple times
  
• Ran OrBit calibration procedures successfully
  
• Battery support at 14V during procedures
  

Questions:

1. Does a used WAM module on SPA Volvos require VIDA software download/flash even if the part number matches exactly?
   
2. Is the OrBit ASDM calibration enough, or does VIDA need to perform camera/WAM initialization?
   
3. Does the system require an extended drive cycle before the camera image returns?
   
4. Has anyone had the camera remain black even though WAM communication came back online?
   
5. Could this still be a MOST/coax/camera feed issue rather than module programming?
   

Any advice from someone who has swapped a WAM module successfully on SPA XC90/S90/V90/XC60 would be greatly appreciated.
Thanks!