BenzWorld Junior Member
Date registered: May 2007
Vehicle: 2002 E320 Silver Wagon
Location: Baltimore Maryland
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2002 E320 Key Fob Battery Insert.
I have 2 keys. One is worn more than the other because of EDC and does not lock/unlock anymore. Batteries are still in good charge, identical voltage as the less worn fob which works flawlessly. I swapped out the battery insert with each other and the worn fob now works.
Question: there are a lot of fobs on Ebay. Can I buy one of these and just use the battery insert without having to reprogram?