Exhaust Flap, Servicing

Exhaust flap, servicing
Exhaust flap, checking

Special tools and equipment required





- VAS 5051 with VAS 5051/1

Work sequence
- Connect vehicle diagnostic, testing and information system VAS 5051 and select vehicle system "01.Engine electronics" from list. Ignition must be on.
- Run engine briefly to produce vacuum required for testing in vacuum reservoir.
- Switch off engine and switch ignition on.





Indicated on VAS 5051:
- From list -1- select diagnostic function "0.3 - Final control diagnosis".
- Keep touching - key until Exhaust flap valve 1 -N321- is actuated





- Operating rod (arrow) of exhaust flap must move forward and back at both rear mufflers operating rod does not move:
- Check vacuum unit of exhaust flap.
- Check vacuum pipe to vacuum reservoir and to Exhaust flap valve 1 -N321- beneath left luggage compartment side trim.
- Check Exhaust flap valve 1 -N321-.
- Terminate function "0.3 - Final control diagnosis" by touching - key.
- Touch "06 - End of output".