11 36 655 Removing And Installing/Replacing Both Solenoid Valves (N54)

WARNING: This page is about a different car, the 2010 BMW 135i, 2009 BMW 135i, and 2008 BMW 135i. However, it is still accessible from the selected car via links, so may be relevant.

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

Rough running
OBD incorrect entry
Poor exhaust gas values
Low engine power

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

Necessary preliminary tasks:

Read out fault memory in DME control unit
Switch off ignition
Remove fan cowl . See 17 11 035 REMOVING AND INSTALLING/REPLACING FAN COWL WITH ELECTRIC FAN (N54) .

NOTE: Carefully press coolant hose and pressure line (not shown) to one side.

NOTE: Solenoid valve (2) controls the inlet adjustment unit.
Solenoid valve (3) controls the exhaust adjustment unit.

Remove plug connections (1 and 4).

Installation:

Do not mix up plug connections (1 and 4) of solenoid valves.

Plug connections (1 and 4) must snap audibly into place!

Fig 1: Identifying Plug Connections Of Solenoid Valves

Courtesy of BMW OF NORTH AMERICA, INC.

Unfasten screws (3 and 4).

Tightening torque. See 11 36 3AZ in 11 36 VARIABLE CAMSHAFT CONTROL .

Carefully pull out solenoid valves (1 and 2).

Fig 2: Identifying Solenoid Valves

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Replace sealing ring (1) on solenoid valve (2) .

NOTE: Moisten sealing ring (1) with engine oil.

Avoid damaging, e.g. notches or scratches, the solenoid valve (2).

Fig 3: Identifying Sealing Ring On Solenoid Valve

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Risk of damage!
Do not tilt solenoid valves (1 and 2) when inserting into cylinder head.

Carefully insert solenoid valves (1 and 2) up to stop.

Ensure correct installation position.

Insert screws (3 and 4) and tighten down.

Tightening torque. See 11 36 3AZ in 11 36 VARIABLE CAMSHAFT CONTROL .

Fig 4: Identifying Solenoid Valves

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.

Now clear the fault memory.

Check function of DME control unit.