Mine will sometimes do this. If I flip the key over then it works. Must be a slight difference between the two sides of the key. It will only work one way in my drivers door too. Not at all in the passenger side though. Works both ways in the trunk.

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1959 Gravely LI, 1963 Gravely L8, 1973 Gravely C12
1982 380SL
1978 450 SEL 6.9 euro restoration at 63% and climbing
1987 300 D
2005 CDI European Delivery
2006 CDI Handed down to daughter
2007 GL CDI. Wifes