Reprogram spare key after battery change
Needed to use my spare key which I know worked 3 years ago. Key does not work at all.
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Changed Key battery same issue.
Does any one know how I can reprogram the key. TIA




Programming key registration is a licensed locksmith job that requires expensive tools.




In old cars, inserting key into ignition with switch to ON (no engine run) did work, so I guess it would not hurt to try, but don't hold your breath.
What country? In USA they are about 2 indies, who can handle key repair, when MB USA will force you to buy new key (who in most cases is not available due to Covid)
Do you get any light with new battery?
Last edited by kajtek1; Mar 25, 2024 at 04:41 PM.
In old cars, inserting key into ignition with switch to ON (no engine run) did work, so I guess it would not hurt to try, but don't hold you breath.
What country? In USA they are about 2 indies, who can handle key repair, when MB USA will force you to buy new key (who in most cases is not available due to Covid)





