Volkswagen 5Q0-145-803-AD Intercooler

To remove the turbocharger, warm up the engine and drain the oil, then allow it to cool and drain the cooling system. Disconnect the negative battery cable, loosen the right-front wheel bolts, raise the vehicle, and remove the right-front wheel. Remove the under-vehicle splash shield and engine cover, then proceed with specific steps for different engine types, including detaching various components such as heat shields, coolant hoses, and electrical connectors, and finally removing the turbocharger from the vehicle.

If replacement is necessary, change the engine oil and filter. Complete diagnosis requires special techniques and equipment, so if initial checks do not identify the problem, consult a dealer service department or a properly equipped repair facility.

For charge air cooler replacement, raise the vehicle, remove necessary components, and follow specific steps for different engine types, ensuring proper installation and tightening of bolts in a diagonal pattern.