I think I found service for the built in analog phone in my '98 SLK230....they need the ESN. The only numbers I found were on the cradle - the type(8 digits) and the Serial # (11 digits). Where is the ESN found???

Thanks!

perhaps on the phone brain

Alon

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'92 300CE - Sold
2004 C240 - 744 - C7 Wheels - Android Radio
2002 C320 - 816 - Sport Wagon

There should have been a form in the glove compartment with the ESN on it. I think any MB dealer can look it up based on vehicle serial number. I also think there may be a way to get it from the phone but your cellular service guy should know that .

It's on the transmit-receive unit. It's generally in the trunk, behind the plastic panels on the side - though I'm not certain about the SLK. I *think* it's 15 digits, but can't look it up right now. If you find the TRU, just copy down all the information on it - the installer will know which string of digits is the ESN.