Ford Fiesta 2003 - Fiesta immobiliser fault

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Wed 15 Feb 2012 13:56
Ford Fiesta 2003 - Fiesta immobiliser fault - speedyxjs

I have a 2003 fiesta which seems to have an immobiliser fault. When you switch the ignition on, the immobiliser light flashes fast and the mileage wont appear on the display. It just shows - - - - - -

I have checked at all the plugs and tried another ecu but nothing seems to work

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Wed 15 Feb 2012 13:57
Ford Fiesta 2003 - Fiesta immobiliser fault - speedyxjs

Also, i cant get any codes from it as it wont recognise the car

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Thu 7 Mar 2013 01:03
Ford Fiesta 2003 - Fiesta immobiliser fault - snoot

I just had a similar problem develop on a 2003 1.4 cdi. It only happened after short journeys with heater, lights and de-misters running. The car ran fine until parked, and a few minutes later would not re-start with the promlem you mention. The headlights came on and looked fine. The PATS light ultimately went out. After standing an hour or so, the PATS light flashed normally and the car would start normally. I just changed the battery and cleaned the posts and connectors. So far it hasn't happened again.

Edited by snoot on 07/03/2013 at 01:05

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