Safrane Immobilizer Problem

I had a similar issue with my old Opel Vectra. Symptoms were almost identical: engine starting then cutting out. Turned out to be a problem with the transponder in the key not being properly recognized by the immobilizer. Does the Safrane have a remote start or aftermarket anti-theft system installed? Those can sometimes interfere with the factory immobilizer.

Thanks. My Safrane doesn't have a remote start or aftermarket anti-theft. Do you remember if the Vectra issue was fixed by reprogramming the key, or something more? Trying to understand the possible repair scope before I visit a workshop.

The Vectra needed a new key and the immobilizer module had to be reprogrammed. Before you do that, visit a workshop with Renault diagnostic tools and key programming equipment. They can read the error codes and diagnose if the key needs reprogramming or if there is another fault in the immobilizer system or ignition control.

Thanks for the advice. I took the Safrane to a workshop with Renault diagnostic tools. The key programming was the problem. Reprogramming, costing 45€, fixed it completely. The engine now starts perfectly. I appreciate the guidance!