I bought a 94 s350 and it didn't come with the key-less entry remotes.

i was wondering if you can sync any remote to a w140.






my buddy had a remote like this that he let me try. it didn't work with the sync instructions i found online. can these later remotes work with an early w140? or a used early w140 remote? or do i have to go to the dealer?

answers are appreciated.

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1974 240d
1983 240d -sold
1989 420sel with om606
1994 s350 turbodiesel - sold