I recently purchased a '92 400e with the OEM becker radio/casette unit. The previous owner finally found the owner's manual but no radio codes. Can someone advise the most efficient way to obtain the code?

Tom,

Funny you should ask -- I just ran into this issue today.

Call your Benz dealer and provide them with the VIN. They should give the code to you. Make sure ignition is in #1 position, turn the radio on and enter the 4 digit code. It should come back on, with all your previous station settings.

Best regards,

Thanks Ted ... will give it a shot when they open this morning