christopher_weber53

Explorer Immobilizer Problem

Having a perplexing issue with my 2017 Ford Explorer (gasoline engine) at only 32246 km. The engine won't start consistently, sometimes sputtering briefly then stalling. Diagnostic scans show an immobilizer fault, and I suspect incorrect key programming. Has anyone else experienced anti-theft system issues with their Explorer?

A 2017 Ford Explorer owner faced an issue where the engine wouldn't start consistently, with diagnostic scans indicating an immobilizer fault. The problem was suspected to be due to incorrect key programming. A similar experience was shared, suggesting checking the remote start module and visiting a workshop for key and immobilizer reprogramming. The solution involved re-flashing the ECU and reprogramming the key, which resolved the issue.

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4 comment(s)

I had a similar issue with my Explorer. The symptoms you described, the engine starting momentarily before cutting out, definitely ring a bell. Did you check the remote start module, or any aftermarket anti-theft devices?

Thanks for the quick response. I haven't looked at the remote start module yet. Could you elaborate on your experience? Were the symptoms identical, and what steps did you take? I'm interested in any diagnostic procedures you used.

Yes, the symptoms were almost exactly the same. Given that it is the immobilizer and the anti-theft system interacting, I would suggest visiting a competent workshop. They can check the correct programming of the keys and the immobilizer itself. I had to go through this, and they re-flashed the ECU and refreshed the key data.

I appreciate your insights. I took it to a local workshop, and the key programming was indeed the problem. Re-flashing the ECU and re-programming the key resolved it, costing only 45€! Thanks again for steering me in the right direction.

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FORD

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EXPLORER