Lift the engine cover at the sides "arrow A" and remove it forward "arrow B".
Remove the upper boost air pipe "1" with connecting hose "2" "arrows". Remove the cylinder head cover. Remove the intake manifold flap motor "V157". Unscrew the bracket with the exhaust gas pressure sensor 1 "G450". Unscrew the screws between the EGR cooler and the intake manifold. Remove the intake manifold with the EGR valve "N118", the EGR potentiometer "G212" and the EGR regulator "V338".
Installation
Installation is carried out in the reverse order of actions. After replacement, the new part should be adapted in the following manner. Turn the ignition on and off, then wait 1 minute for the control units to run out of power. Start the engine and let it run for at least 1 minute at idle speed. It is not possible to clear the fault memory of the "VAS 5051" if any fault is loaded into the memory. In case of a loaded fault, the contents of the fault memory should be reset and the entire procedure should be repeated.
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Important: Replace seals and self-locking nuts. All hose connections must be secured with appropriate hose clamps. Any cable clamps that were loosened during removal must be reattached in the same position during reinstallation.
When installing the connecting hose with a push-in connection, ensure that the locking clamp "arrow" enters the locked position behind the retaining tabs "A".