Yes, you push the seatback cushion toward the frame.

The headrest is electric, switch is the tiny button behind the backrest button on the door. If it doesn't go up and down when you use the switch, the carrier is broken, do a search for repairs, someone posted some nice pics last year.

Peter

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1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!