Re: Update: BMW 540i E39 4.4 L '99- No throttle control Archived Message
Posted by Alan Kane on June 18, 2008, 3:23 pm, in reply to "Re: Update: BMW 540i E39 4.4 L '99- No throttle control"
Hi Nick, If the adaptions are not learned it will not rev. Dave is correct about the codes and I would imagine it is possible for them to set because of adaptions. The garage reported that the T/B cycled after the battery was reconnected. That would suggest that the ECU is capable of driving it and the wiring is ok. I would expect the adaptions in this to be in a non volatile memory. I could be wrong about that but I doubt it. Any that I have re-set needed to be cleared serially first then left koeo for a few minutes. Any that I have seen with flat batteries never needed adaptions re-set. Try what BMW call a battery reset. Disconnect both battery terminals and short together to drain the caps. Maybe it will relearn then. HTH
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