Mercedes-Benz GLK-Class Service Manual page 40

"NECK-PRO" active head restraint system
The NECK-PRO head restraint is available as standard
on both front seats. The system supports the occu-
pant's head at an early stage in the event of a rear
end collision of low severity. When an impact occurs,
sensors trigger pre-tensioned springs which move
the head restraints forwards (43 mm) and upwards
(24 mm).
Once a NECK-PRO head restraint has been triggered,
it can be reset to its starting position as follows:
• First push the bottom of the head restraint cushion
backwards as far as it will go
• Then press the head restraint cushion down into
the guide as far as it will go
• Finally, fold back the top of the head restraint
cushion firmly until it locks in place
Introduction of the New GLK-Class (USA), Introduction into Service Manual for Model Series 204
Triggered NECK PRO head restraint
Resetting triggered NECK-PRO head restraint
1 Push back
2 Press down
3 Fold back
Safety
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