That is an interesting possibility. But I think you would do better with a lottery ticket than hitting one that is still active with lifetime. Only way you would know is to plug it in and see. I can't imagine SXM customer service giving you any help with looking up the ESN.

__________________
The OM 642/722.9 powered family
Still going strong
2014 ML350 Bluetec (wife's DD)
2013 E350 Bluetec (my DD)

both my kids cars went to junkyard in 2023
2008 ML320 CDI (Older son’s DD) fatal transmission failure, water soaked/fried rear SAM, numerous other issues, just too far gone to save (165k miles)
2008 E320 Bluetec (Younger son's DD) injector failed open and diluted oil with diesel, spun main bearings (240k miles)

1998 E300DT sold to TimFreeh
1987 300TD sold to vstech

You don't need customer service to get the ESN, the ESN can be directly displayed from the command screen.

I wasn't aware that there were SIRIUS radios out there that had lifetime subscriptions, that would be really nice. From what I know about SIRIUS service I'd guess that if the parts car you removed the control unit from had service you'd have service when you installed the unit in your car. I removed the SDARS receiver from an 2008 E350 and when I called to activate the service the SIRIUS person knew that my receiver was from an 2008 Mercedes, so they do have some info on hand.

__________________
98 Dodge-Cummins pickup (137K)
13 GLK250 (157k)
06 E320CDI (341K)
16 C300 (89K)
82 300GD Gelaendewagen (54K)

RE: lifetime units, there are a number of these on eBay as well...though no MB module one. I think a person use to be able to buy a lifetime subscription.....lifetime of unit anyway.

The aftermarket unit plugged though AUX port in glove should be easy to do.

__________________
-- Chris

'95 E300, 216k miles, Silver Surfer
'05 E320 CDI, 138k miles
'07 S550 4matic, 69k miles

Gone but not forgotten:

'76 300D, 350k miles?, SOLD in 1995
'75 240D, 300k miles, SOLD in 1991