ASSYST Plus on Mercedes S-Class (W221) allows the volume to be calculated. To do this, you need the WIS code robot and the WIS dealer program, which is based on the odometer and the work code is a service sheet. To get the code yourself without the STAR scanner, you need to:
- Rotate the ignition key to position 1.
- The display should display the odometer. If you don't, press the Forward button several times (S110s3).
- Press and hold the telephone conversation button (S111s1). Then, pressing and holding it for approximately 3 seconds, click OK (S110s6).
- We choose ASSYST Plus-STO and click OK.
- Press OK again to confirm the choice of work code for the STO.
- The display code (1) is displayed, recording it for input to the WIS.
- Click "Back" and "S110s4" to return to the main menu.