Emptying tank for reducing agent, Sharan — VW

🧭 Before you start

Fits: VW Tiguan I (5N, 2007–2016), VW CC (358, 2012–2017), VW Sharan II / SEAT Alhambra (7N, 2010–)

• Also covered elsewhere: Service net → Environment → Workshop disposal

🔧 Engine codes this applies to

📋 Procedure

1. ⚠ Danger due to escaping reducing agent.To prevent large amounts of reducing agent from escaping when the metering line is opened, it is necessary to wait until automatic return of the reducing agent is completed . — Turn plug-in connector (1) clockwise and remove cover (2).
2. Open filler cap (1) of tank for reducing agent.
3. Close shut-off taps (A), (B) and (C).
4. Connect coupling (D) to connection on shut-off tap (A).
5. Pressurise compressed air hose with compressed air.

6. Open shut-off tap (A).
7. Close shut-off valve (A) as soon as the pressure gauge registers a pressure of 0.8 bar.
8. Disconnect coupling (D) from connection on shut-off tap (A).
9. Interrupt the compressed air supply through the compressed air hose.
10. Guide end of hose (E) into filler neck.
11. Open shut-off tap (B). [Note: The reducing agent is then drawn from the tank and into the vacuum boxVAS 6557 by the vacuum. The capacity of the vacuum boxVAS 6557 is 11 litres. This extracted volume is sufficient for removal of the reducing agent tank. If the tank for reducing agent must be emptied completely, repeat the procedure as necessary.]
12. To empty vacuum boxVAS 6557, hold connection on shut-off tap (C) over suitable container and open shut-off taps (A) and (C).
13. ⚠ Never reuse extracted reducing agent. For information on storage and disposal, see Service net → Environment → Workshop disposal. For country specific information about storage and disposal, ask the importer. — Extract reducing agent completely as described above.
14. Flush out vacuum boxVAS 6557 thoroughly using water when work sequence is complete.

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