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Home >> Porsche >> 2003 >> 911 Carrera 4S, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 38 (Engine) >> Engine, Cooling >> Draining And Filling In Coolant (Includes: Bleeding) >> Draining Coolant

Draining Coolant

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CAUTION: Danger of scalding!
  • Coolants can be extremely hot and pressurized.
  • Wear suitable protective equipment.
  • Carefully open the cap on the expansion tank.
  1. Position the vehicle at the take-up points provided on a lifting platform.
  2. Open rear luggage compartment. Protect the trunk floor panel against soiling with a suitable cover.
    Fig 1: Protecting Trunk Floor Panel Against Soiling With A Cover
    G03092665Courtesy of PORSCHE OF NORTH AMERICA, INC.
  3. Open tank cap on the expansion tank and remove.
    Fig 2: Opening Coolant Expansion Tank Cap
    G03092666Courtesy of PORSCHE OF NORTH AMERICA, INC.
  4. Remove the entire underbody cover.
    Fig 3: Removing Underbody Cover
    G03092667Courtesy of PORSCHE OF NORTH AMERICA, INC.
  5. Drain cooling system. Remove the drain plug from the engine, drain the coolant into a container and dispose of coolant according to the country-specific legal requirements if no longer required.
    Fig 4: Removing Coolant Drain Plug From The Engine
    G03092668Courtesy of PORSCHE OF NORTH AMERICA, INC.
  6. Pull the radiator supply and return lines off the engine. To do so, undo the hose clamps, carefully pull off the hoses and allow the remaining coolant to run out. Then clean the inside and outside of the hoses, connect the hoses again and tighten the hose clamps. Check whether the hoses are securely seated.
    Fig 5: Removing Coolant Hose Clamps
    G03092669Courtesy of PORSCHE OF NORTH AMERICA, INC.
  7. Open the heating lines on the vehicle floor. To do so, open the hose clamp, pull off the lines and drain. Then clean the inside and outside of the hoses, connect the hoses again and tighten the hose clamps. Install the hose clamps and check that the lines are seated correctly.
    Fig 6: Locating Heating Line Hose Clamps
    G03092670Courtesy of PORSCHE OF NORTH AMERICA, INC.
  8. Install drain plug on the engine with a new sealing ring and tighten. Tightening torque: 10 to 15 Nm (7.5 to 11 ft.lb).
    Fig 7: Installing Coolant Drain Plug In Engine
    G03092671Courtesy of PORSCHE OF NORTH AMERICA, INC.
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