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Home >> Mercedes Benz >> 2025 >> S580 >> Repair and Diagnosis >> Engine Mechanical >> Cooling Fan >> Engine -- Cooling System (2 Of 2) -- 223 Chassis >> Maintenance >> General Overview, Check Coolant Level In Coolant Expansion Reservoir For 48 V Onboard Electrical System Coolant Circuit - AP20.00-P-2000U

General Overview, Check Coolant Level In Coolant Expansion Reservoir For 48 V Onboard Electrical System Coolant Circuit - AP20.00-P-2000U

Model 206, 214, 223, 232, 236 with code B01 (48V technology) 

  If the coolant level is too low, check the cooling system for fluid loss and the coolant for antifreeze content, subject to separate repair order     
  Check coolant level for 48 V on-board electrical system coolant circuit Model 206 with engine 139, 254, 654 with code B01 (48V technology) AP20.00-P-2015A
  Check coolant level for 48 V on-board electrical system coolant circuit Model 214 with engine 254, 256, 654, 656 with code B01 (48V technology) AP20.00-P-2015D
  Check coolant level for 48 V on-board electrical system coolant circuit Model 223 with engine 176, 256, 656 with code B01 (48V technology) AP20.00-P-2015OA 
  Check coolant level for 48 V on-board electrical system coolant circuit Model 232 with engine 139 with code B01 (48V technology) AP20.00-P-2015B
  Check coolant level for 48 V on-board electrical system coolant circuit Model 236 with engine 254, 256, 654 with code B01 (48V technology) AP20.00-P-2015AB