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Discussion Starter · #1 ·
I have a 2019 ford Edge 2.0 ecoboost. After I turn off the engine, the PCM relay in the fuse box starts to buzzing. Also with this, the relay works on the all-wheel drive gearbox. This happens every ~19 seconds, and it can be for several hours. I checked all possible problems:
Battery new
Mass perfectly contacts
The relay itself is fine.

If I do not use the car for several days, then it completely drains the battery.

What else could be the problem?

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