Our 78 300D will go six times if done right away. Wait 2-3 days then only 2 times.
My 1985 300D will only lock, not unlock and even then only sometimes and the trunk and gas cap never.

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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