16 19 006 Drawing off and filling SCR active reservoir

WARNING: This page is about a different car, the 2013 BMW X5, 2012 BMW X5, and 2011 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.

IMPORTANT: Ensure adequate ventilation in the workbay!
Avoid skin contact (wear gloves)!
Avoid eye contact (safety goggles)!
Urea/water mixture can escape when components carrying urea/water mixture are released.
Have a collecting vessel ready.
Observe country-specific waste disposal regulations.

IMPORTANT: Maintain conditions of absolute cleanliness.
Connections and covers of lines carrying urea/water mixture must be cleaned thoroughly with water after each removal or before each installation!
Thoroughly clean the working area with water after repair work.
Use fluff-free cloths for cleaning .
Close connections and lines!
Thoroughly clean special tool with water after each use.

Necessary preliminary work:

Remove side right UNDERBODY PANELLING

Remove filler head plug (1).

Fig 1: Identifying Filler Head Plug

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IMPORTANT: Before starting up urea/water mixture extractor unit:
Read unit manufacturer's operating and safety instructions.

Detach sealing cap (1) from suction line.

Installation note:

Check by pulling engagement of cover cap (1).

Fig 2: Identifying Suction Line Sealing Cap

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Connect urea/water mixture suction unit (1).

Draw off urea/water mixture.

NOTE: Do not reuse drawn-off urea/water mixture.

Fig 3: Identifying Urea/Water Mixture Suction Unit

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IMPORTANT: Before starting up urea/water mixture filler unit:
Read unit manufacturer's operating and safety instructions.

Connect filler line (1) to filler connection (2).

Connect tank ventilation line (4) to connector (3).

Fig 4: Identifying Filler Line, Connection And Tank Ventilation Line

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Connect filler unit filler connection (1) to active reservoir filler connection.

Stop cock (2) closed. Stop cock is positioned at right angles to flow direction.

Fig 5: Identifying Filler Unit Connection And Stop Cock

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Connect filler connection (1) to urea/water mixture reservoir (2).

Stop cock (3) closed. Stop cock is positioned at right angles to flow direction.

Fig 6: Identifying Urea/Water Mixture Reservoir, Filler Connection And Stop Cock

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Establish height difference (A) between urea/water mixture reservoir and filler connection.

Open stop cocks (1). Stop cocks point in flow direction.

Active reservoir is filled. Observe FILLING CAPACITY .

Fig 7: Identifying Urea/Water Mixture Reservoir And Filler Connection Height

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The active reservoir is overfilled if the urea/water mixture in the vent line (2) rises to the same level as in the filler line (1).

Fig 8: Identifying Urea/Water Mixture Vent Line

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Set urea/water mixture reservoir (1) down on floor.

The urea/water mixture flows back through vent line (3) and filler line (2) into reservoir (1).

Close stop cocks when no more fluid flows through lines (2 and 3). Stop cocks point at right angles to direction of flow.

Disconnect filler unit from filler connection.

After use, clean filler unit thoroughly with water.

Fig 9: Identifying Urea/Water Mixture Reservoir And Vent Line

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