Twingo 3 gearbox neutral switch / sensor

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gray man

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Apr 25, 2023
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I have had a gearbox fitted on my daughter's 90 sce that I procured from a breaker. The gearbox is working fine but about a week after fitting, the stability control system warning light came on with the spanner. The car also stopped displaying the current gear and displayed an N so you had to be in neutral with foot on clutch to start. Had a diagnostic done which said SCS and ABS etc. all fine. They think it's the gearbox neutral switch. Renault said it can't be bought alone and is £800 plus vat. Any help appreciated.
Could it be the new gearbox has different sensor and ECU doesn't like it?
Unfortunately, the original box was disposed of as we thought new one was fine.
 
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