Originally Posted by schoonerm3 Checksum so something like a confirmation to ensure that the edit you have made is going to be read by the car and everything is compatible. Programms such as bmw flash automatically check the checksum and correct it Cheers for the knowledge! Originally Posted by 318 iS Cosmos Did you change the warm up light sequence? Standard sequence extinguishes too early @60 degrees C. Yea I have done that.
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