11 36 715 Removing and installing/replacing both solenoid valves on left side (N63O1)

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IMPORTANT: Always check that the solenoid valves are clean during removal and installation.
Possible malfunctions if valves are contaminated:

Irregular operation
OBD incorrect entry
Poor exhaust gas values
Low engine performance

IMPORTANT: Risk of damage!
Do not clean solenoid valves with compressed air.

Solenoid valves, cylinders 5-8:

Necessary preliminary work:

Read out fault memory in DME control unit
Switch off ignition
Remove left INTERCOOLER .

Unlock plug connections of solenoid valves (1 and 2) and disconnect.

Installation note:

Plug connections must snap audibly into place!

Fig 1: Identifying Solenoid Valves Plug Connections

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NOTE: Solenoid valve (2) controls the exhaust adjustment unit.
Solenoid valve (4) controls the inlet adjustment unit.

Release screws (1 and 3).

Tightening torque 11 36 3AZ .

Pull out solenoid valves (2 and 4).

Fig 2: Identifying Adjustment Unit Solenoid Valves

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Installation note:

Replace O-rings (1 and 2) on solenoid valve.

Installation note:

To install solenoid valves, coat both O-rings with engine oil.

If the solenoid valve is to be reused, the filter strainer (see arrow in illustration) must be cleaned.

Fig 3: Locating Solenoid Valve O-Rings

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NOTE: If a filter element is clogged with dirt, the filter element (filter strainer) may be removed.

Release filter elements (1) at contact edges.

Fig 4: Locating Filter Elements

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Bend open welding spots on filter element (1) with a screwdriver (2) in direction of arrow until welding spots are opened.

Fig 5: Bending Open Welding Spots On Filter Element Using Screwdriver

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Avoid damage to the solenoid valve housing such as notches or scratches (see arrows in illustration).

Installation note:

Apply engine oil to O-ring.

Fig 6: Locating Solenoid Valve Housing

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Gently insert solenoid valves as far as stop.

Ensure correct installation position.

Insert screws (1 and 3) and tighten down.

Tightening torque 11 36 3AZ .

Fig 7: Identifying Solenoid Valves Screws

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Assemble engine.

Clear diagnostic fault entries from fault memory.

Check function of DME control unit.