Selespeed System Failure in Reverse issue with reverse Buzzer
I've got a 2005 Alfa Romeo Selespeed 147 that has been causing some issues. It was involved in an accident and initially had a selespeed error and wouldn't change gears. There were issues with the accumulator and some Wiring which were fixed at an alfa specialist mechanic.
The car drives now however as soon as you put it in reverse the Selespeed System Failure comes up on the dash, the car can still reverse and does so with no issue.
When the fault codes are cleared, the car operates fine and shows now errors until reverse is engaged then the error stays on screen.
The mechanic believes it is related to the reverse buzzer but hasn't been able to drill down to the source of the issue apart from saying it's related to the reverse buzzer not operating correctly and may be a wiring problem.
Does anybody have any suggestions? Any ideas on what can be done to eliminate the issue, any help will be greatly appreciated.