As per title, the DIS on my 2003 S4 has started showing intermittent error messages, but the shown fault in fact is not at fault, if you know what I mean. First fault, bulb failure to number plate light, checked and found to be ok. Second fault, bulb failure to rear center brake light, checked and found to be ok. New fault today, brake failure!!, again checked and found to be ok. Turning the ignition off and then on again to run self diagnostics seem to clear the alledged fault and all appears to be good again, only for the fault to reappear a few days later. Any one experienced this situation before?, any thoughts or ideas on the possible cause and solution to this would be appreciated. Thanks.