Answer
May 21, 2025 - 01:03 AM
In most cases, yes.
If you replace the SAM (Signal Acquisition Module) in a 2004 SL500, it will need to be programmed or coded to the car. The SAM module isn't just plug-and-play, as it handles a ton of electrical functions and needs to be matched to your vehicle’s configuration.
That said, some used SAM modules might work without coding if they come from an identical model with the same options, but it's not guaranteed. To do it right, programming is usually done through a Mercedes Star Diagnostic system (or something equally advanced), and it's the only way to make sure all features function properly.
And yep, this manual you're looking at does include info on SAM module location, removal, and wiring, but for the actual coding process, you’d need the right scan tool or software.
