Audi A8 2019 - Page 27

23
Note
The exhaust flap is actuated by the exhaust flap control unit via a worm gear. Because this is a "self-locking" gear, it is essen-
tial that the servomotor be removed before testing the movement of the flap.
Exhaust flaps
Two of the four exhaust outlets can be closed, reducing noise
as the vehicle accelerates from a stop.
Exhaust Door Control Unit 2
J945
Rear muer
(operates on the reflec-
tion and absorption prin-
ciple)
Exhaust Door Control Unit
J883
662_077