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Q: Car won't start after ECM modular replacement

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I replaced the ECM modular, but my car still doesn't start. Do I need to program the ECM modular?

A: You did not say why the ECU was diagnosed, ...

You did not say why the ECU was diagnosed, but the ECU would need to be programed to your specific vehicle by a dealership. If the ECU did not fix whatever issue prompted the replacement, then the car will not start until the issue is fixed. A qualified technician would be able to diagnose why your car is not starting.

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