I had this happen to me on my 16v recently. Seems like the 16v owners excersise the hood a lot I used a differnt technique. I got a roughly 3 foot pole from a mop (metal) and jacked the passenger side of the car up. I then put the pole diagonaly up from in front of the radiator and caught the end of the hood latch lever. I then hit the end of the pole with a hammer and that was that. My hood latch was stubborn and the screwdriver method did not work so this is an alternative. Good luck.

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2006 E320 CDI
1998 S320
1987 190E 2.3-16

1990 300D 2.5 Turbo(sold)
1987 300SDL Turbo(sold)
1987 300TD Turbo(sold)
1987 190D 2.5 Turbo 5sp(sold)
1985 190E 2.3-16(sold)
1984 500SEC(sold)
1984 230TE(sold)
1978 240D(sold)-Miss it!
1972 280SE 4.5(sold)