Section 1635 (Ignition/Glow Plug System [CDTA,CDTB,CLAB,CMHA,CPNA,CTBA,CTBB,CDTC,CPNB,CTBD])

WARNING: This page is about a different car, the 2016 Audi A8 Quattro and 2015 Audi A8 Quattro. However, it is still accessible from the selected car via links, so may be relevant.