Q7 Quattro V6-3.6L (BHK) (2007)
3. Check whether holder 03H 971 501 D (the new knock sensor bracket that is twisted 15°) is installed.
4. If the old knock sensor bracket 03H 971 501 A is installed, replace it with the new bracket 03H 971 501 D (Figure 2, A)
5. Install extra heat insulation 03H 971 461 (Figure 2, B and Figure 3).