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Home >> Mercedes Benz >> 2019 >> C300 4Matic, 2D Convertible >> Repair and Diagnosis >> External Pages >> Different car >> Section 346 (Engine Cooling System - 253 Chassis) >> Maintenance >> Replace Main Circuit Coolant - AP20.00-P-2082E

Replace Main Circuit Coolant - AP20.00-P-2082E

WARNING: This page is about a different car, the 2023 Mercedes-Benz GLC300, 2022 Mercedes-Benz GLC300, 2021 Mercedes-Benz GLC300, 2020 Mercedes-Benz GLC350e, and 2020 Mercedes-Benz GLC300. However, it is still accessible from the selected car via links, so may be relevant.

Engine 177, 264, 274, 276.8, 642, 651, 654, 656 in model 253 

Shown on engine 274.920 

G14470477Courtesy of MERCEDES-BENZ USA
WARNING Risk of injury  to skin and eyes suffering scalding from contact with hot coolantspray. Risk of poisoning  from swallowing coolant. Do not open Cooling system unless coolant temperature is below 90°C. Open cap slowly and release the overpressure. Do not pour coolant into beverage containers.
Wear protective gloves, protective clothing and safety glasses.
AS20.00-Z-0001-01A 
Notice  Notes on coolant   AH20.00-P-2080-01KOA 
INSPECT Check     
1 Check coolant level in coolant expansion reservoir (2).   AP20.30-P-2050E 
  Draining     
2 Drain off coolant.    
REFER TO TESTING & REPAIR   Engine 177 in model 253 AR20.00-P-1142MNG
REFER TO TESTING & REPAIR   Engine 264 in model 253 AR20.00-P-1142MRI 
REFER TO TESTING & REPAIR   Engine 274.9, 276.8, 651 in model 253 AR20.00-P-1142LW 
REFER TO TESTING & REPAIR   Engine 642 in model 253 AR20.00-P-1142OGY
REFER TO TESTING & REPAIR   Engine 654, 656 in model 253 AR20.00-P-1142OLG
  Pour in     
3 Pour in new coolant.    
REFER TO TESTING & REPAIR   Engine 177 in model 253 AR20.00-P-1142MNG
REFER TO TESTING & REPAIR   Engine 264 in model 253 AR20.00-P-1142MRI 
REFER TO TESTING & REPAIR   Engine 274.9, 276.8, 651 in model 253 AR20.00-P-1142LW 
REFER TO TESTING & REPAIR   Engine 642 in model 253 AR20.00-P-1142OGY
REFER TO TESTING & REPAIR   Engine 654, 656 in model 253 AR20.00-P-1142OLG
REFER TO CAPACITIES & SPECIFICATIONS Coolant specifications   BB00.40-P-0310-01A