Hi all, have a seat Leon mk3 2016. having an issue where the car doesn't start showing up EPC light on the dashboard and immobiliser active issue. Car used to work fine this issue randomly appeared. Ive tried a new ignition barrel, tried putting a new ECU in and the key doesn't want to pair so that didn't work. The car unlocks and locks with the buttons on the key. Ive had new clocks put in on the car changed back to the old ones and still doesn't start. The car doesn't crank at all. Don't think its battery issue as ive put a battery pack when trying to start it. Ive run out of ideas as to what it could be, any help would be greatly appreciated.
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