I disconnected the battery to do a small maintenance job which also required removal of the steering airbag pod.
When I had completed the task, I reconnected everything and was a little alarmed to find my fuel gauge not working, and the reserve warning light was on.
I did the "stupid thing" which was to disconnect the battery, wait 2 minutes and reconnect it. I say stupid, because it did nothing to change the fault.
I referred to Robert T's thread in the knowledge base which describes the 2 variations of using the cluster self test. My vehicle uses the E46 variation, and the very last test - # 21 is a "Reset OBC" function. I went to that, and pipped the trip button when it said "reset"... all the gauges assumed their correct positions including the fuel gauge.
Problem sorted....... Thanks Robert.
UK forum for general and technical discussion about the Z3 roadster
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