Exhaust Gas Temperature Sensor 2/4 -G648- / -G649-, Removing And Installing, Vehicles With Two Turbochargers: Installing
WARNING: This page is about a different car, the 2015 Audi A7 Quattro and 2014 Audi A7 Quattro. However, it is still accessible from the selected car via links, so may be relevant.
Install in reverse order of removal. Note the following:
NOTE:
Protect the exhaust gas temperature sensor against knocks and impacts. A dropped exhaust gas temperature sensor may not be used again.
Coat the thread with hot bolt paste