Just got a 1981 240D, only one key...didnt know to ask bout others I just assumed ( theres that word) the one did it all.

Question is, do I need two keys (originally was there two?) or can I remove the door cylinders and have them keyed like the ignition, or just buy a set with new keys...

There were two keys, one did everything the other was a valet key for the door and ignition only. If the ignition lock cylinder and the doors locks are original, you should be able to get a key cut (special order) at a dealer using your VIN along with proof of ownership. The valet key isn't useful unless you're seeking originality. They probably still have the records to make the key and they work quite well.

If the doors are different than the ignition, the ignition lock cylinder was probably replaced. You could then order an ignition cylinder with a key coded by the VIN.

Good luck!!!

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"Rudeness is a weak man's imitation of strength" - Eric Hoffer

Awesome thank you, key only works in the ignition so I am guessing that was changed at some point....

Went out and messed around a bit, ignition key will work in the trunk lock but not the doors..just seems odd, will go in but wont turn, tried and little lube to no avail.... doors will lock fine with the interior "plunger"

Try Lock Ease aerosol in the doors. Consider getting a key ordered/cut from the dealer by VIN, it brings everything back to spec vs making a copy of a copy of a copy...

What about the glove box lock?

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"Rudeness is a weak man's imitation of strength" - Eric Hoffer

Key wouldn't even slide into the glove box, didn't want to get to mean with it...will pick up some of the lock ease tomorrow.

It can take a few applications over a couple of days for the lock ease to work.

Good luck!!!

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"Rudeness is a weak man's imitation of strength" - Eric Hoffer

Thank you!!!