Preliminary Work

Information 

• Cooling systems with thermal management (controlled thermostats or coolant valves for controlling engine temperature) must be vacuum-filled. 
• The thermostat must not be activated or electric current must not be applied to the thermostat since this can cause irreparable damage to the thermoelectric couple. 
• Filling with a watering can only does not always guarantee a complete fill (trapped air - overheating). 
• Clamps on cooling system components should be examined carefully following refilling (check the coolant level while cold and top up several times as required). 
• Clamps on cooling system components must also be vacuum-filled if significant amounts of coolant are drained. Drain at least two litres of coolant for vacuum-filling because otherwise the correct vacuum cannot be built up. 

1. Open the bonnet.
2. Remove engine underbody panelling.

   > WM 519219 REMOVING AND INSTALLING COVER FOR FRONT UNDERBODY (PANAMERA, PANAMERA S, PANAMERA S EXECUTIVE, PANAMERA 4, PANAMERA 4S, PANAMERA 4 S EXECUTIVE, PANAMERA TURBO S)

3. Remove left plenum panel cover.

   > WM 852219 REMOVING AND INSTALLING PLENUM PANEL COVER (EXCEPT PANAMERA S EXECUTIVE, PANAMERA EXECUTIVE, PANAMERA 4 S EXECUTIVE, PANAMERA TURBO EXECUTIVE, PANAMERA GTS, PANAMERA 4S SPORT EDITION, PANAMERA 4 EXECUTIVE)