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Stevenet15

Fiesta Ecu Part Number

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A friend of mine took a gamble and won a fire damaged fiesta mk7 at auction for peanuts, there was damage to the bonnet, bumper, wiring loom/battery area and ecu, he has sourced and fitted a new bumper and bonnet on and replaced the wiring loom but the ecu is frazzled, ford want a stupid amount to replace so he's been to the local breakers to find a replacement ecu, clocks, key and alarm box as there all coded but it's far cheaper to do this (£100), however he has a part number issue just wondering if you could help the cars are the same years and engine but what do the last characters represent?

His ecu is

8V21-12A650-KF

0 281 014 803

The one he's foundat the breakers is

8V21-12A650-KD

0 281 014 803

Does the last digits represent it's a software update? Eg KD or KF is two letters on so its just that it has a different software update on it? All other numbers match up just that last letter that's different and there's 4 months between the build dates of the cars. Any help will be appreciated as he wants to know before he purchases

Thanks

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yeah they are the firmware numbers take it to your local dealer and ask for a pcm update and it will be put to the latest level for you bud

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Wow thanks for quick reply, any idea how much it costs to update? Will it run without the update?

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No probs mate i would say around an 1 hour, it would be like paying for diagnostic time as which ever dealer you go to but i will defiantly be no more than an hour so around £50-80

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i think you can I'm not sure as in work i have never had to change any part of the central configuration but i think it can be done though but i don't think for ford will let this be done at a dealer

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