Yes. The instructions do indicate that a recoding is necessary. I was looking for someone who has experienced this on a 2007 X5. I was a little surprised that I did not get any power to the wiring harness terminal that mounts to the trailer hitch. That seems odd to me but could be related to the recoding. Anybody else do their own install and experience this? I have an appointment to have my ECU reprogrammed tomorrow. Will let everyone know the outcome.