True.
Not sure what year or what models this procedure implemented.
That's why I like my older 500SEC so much. Reprograming is not a worry for me on this model.
Do a search (using the serch link at the top of the page) on battery replacement too. If not done properly by keeping you car's electrical "alive" during the replacement, you may have to reprogram again.

I found out the hard way with my S500. Good luck.

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Selling used Mercedes parts on Ebay...always changing...
cdplayer51 take a look!
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