My Key fails

[mitmind]

I have an S3 8L 99'

And the batery deaths in 20 days, ;-(

My key is one of the first's models

4DO 837 231 (NO LETER)
VDO 410 819 /6/2

I saw on ebay a lot of models with leters at the end of SN like A or P Are that keys compatible with mine

I don't have confort module

thanks

J.