My drivers side headrest won't go up when I push the button on the door. I hear the motor humming in there but I get nothing. I can manually lift it up and it just drops back down. So I'm assuming it's fallen off track ?? Maybe? How do I access is to find out? Thanks.

c280 1994

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1994 C 280 117.5k, White (Good as new)
1997 Toyota Camry 149k Miles (Not so pretty anymore)

1990 190e 2.6 95k (Sold-Should not have)
1981 240d Stick ??? Miles...sold