How do I reset my Ford Immobiliser? To reset the immobilizer on your ford fiesta, insert the key and turn to the on position and attempt to start engine. wait 10 minutes, and the security light will start to blink and then go out. turn the car off and wait five seconds. To reset the immobilizer on a ford fiesta mk7 you will need to make sure to lock the car, unlock the car, and allow the key to sit in the on position for at least 30 seconds to re-pair with the car. What causes ford Fiesta not to start? Method 1: Inspect the cylinder and the key. Steps to be followed. i. Inspect your key fob battery. If the key fob battery is dead and has not disabled the system, the car’s anti-theft system may activate. Ensure that the key fob battery is well installed, or you can replace the battery with a new one, then try again. ii. If you need to reset the anti theft system on a ford f150 you should : step 1 insert your first programmed key into the car's ignition and turn it to the "on" position. Step 2 cycle the first key back "off," remove it from the ignition and insert the second programmed key within 5 seconds. Step 3 cycle in "on" and "off" and then remove the How to write Virgin Dumps in the immobilizer EEPROM?We will discuss the basic immobilizer reset procedure by using EEPROM programmer. Can you disable a car Immobilizer?How do you reset an engine immobilizer?How do I disable anti theft system?If you want to install a keyless system or remote Light still turn on. 2016 Ford Fiesta 1.4 ambient - Answered by a verified Ford Mechanic We use cookies to give you the best possible experience on our website. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. do you have a clicker for the locks/alarm? try resetting the alarm from there, also disconnecting the battery (i think you said you tried this) temporarily almost always resets anti theft systems. another thing to try is leave the car alone for at least 15 mins, this allows the short term system to reset itself which might help. when all else fails call the dealer in the morning :) hope wBvx.