[Jasonpe61]

Also try tool32 loading szl prg and running the job containing lenkwinkel_dsc_abgleichen. Job is valid when loading dsc prg of e90, so for szl might be slightly different, i dont remember now.

Thanks I tried that with dsc_60PP lights go out for a few seconds then comes straight back

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If previous poster was correct that you have invalid coding error that can mean one or both of two things:
1. You have not coded unit to a car properly. And I mean actual coding, not just VIN.
2. Unit is incompatible with that car.

Give us part number of the new SZL and car VIN so we can check for 2.

VIN : WBAPX72080CT99039

part number : 9204505

thanks