Installing the coolant expansion tank for the low-temperature

• Position the coolant expansion tank for the low-temperature
  NOTE: TECHNICAL INFORMATION 
  Collect and dispose of emerging fluids. Observe country-specific waste disposal regulations.
• Connect and lock the coolant hose (1).
• Press and lock the coolant lines (3) in the lock (2).

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  NOTE: Schematic diagram is for example purposes. Some parts may differ in certain details.
• Illustrated on the S63T4: 
• Remove pressure pipe between exhaust turbocharger and charge air cooler.

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• Tighten the screw (1) on the coolant expansion tank.
  TIGHTENING TORQUE SPECIFICATIONS
  
  

  Coolant expansion tank for low temperature to the crossing
  Screw K50x18	tightening torque	2.6 Nm

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• Top up coolant to maximum mark. 
• Install the sealing cap (2) of the expansion tank for the charge air cooler.
  NOTE: TECHNICAL INFORMATION 
  Only flexible hose pipes may be disconnected.
• Release the special tool 0 491 256 (13 3 010) at the coolant hose (1) and remove it.

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