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Active Head Restraint, Remove and Install or
Replace
 Remove
Important: When replacing the
front seat as a result of an accident, the active head restraint
assembly must also be replaced. When replacing the front seat
backrests as a result of wear, the active head restraint assembly
can be re-installed.
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| 1. |
Detach upholstery covering/pad 
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| 2. |
Detach side tension spring (3). Detach lower tension spring
(4).
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| 3. |
Detach and remove suspension frame (1) and retaining strap (2)
on support.
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| 4. |
Unscrew active head restraint lever (1) from front seat
backrest frame.
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| 5. |
Unlock active head restraint mount bearing (2) with suitable
pliers and pull upwards out of the front seat backrest frame
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| 6. |
Remove active head restraint mount with support and lever
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Install
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| 7. |
Detach active head restraint lever (3) from mount and detach
active head restraint support
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| 8. |
Attach active head restraint to mount and active head restraint
support 6 Nm
Note: When attaching
active head restraint lever to active head restraint mount and
support – insert screw with screw locking compound (red).
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| 9. |
Push active head restraint mount with support and lever from
below into the front seat backrest frame
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| 10. |
Push active head restraint (1) mount bearing from above into
front seat backrest frame until the retaining lugs engage.
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| 11. |
Active head restraint lever (2) to front seat backrest
frame.
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| 12. |
Insert special bolt (3) with bolt locking compound (red) 6.5 Nm
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Important: The screwed joint,
active head restraint lever to rear seat backrest frame, takes the
form of a self-cutting threaded bolt and may only be released or
screwed in again 1x. After being screwed in again, the bolt head
must be marked with a yellow dot. When the special bolt has been
released again, the front seat backrest must be replaced because
the threaded insert is worn. If the special bolt is twisted when
inserted for the first time, the front seat backrest must also be
replaced.
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| 13. |
Attach mounting frame and restraining strap to the support for
the active head restraint
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Attach the tension springs at the side and bottom of the active
head restraint to the frame of the front seat backrest first of all
and then to the suspension frame
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| 14. |
Attach upholstery covering/pad, front seat backrest
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