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Won't start Immobilizer Malfunction

SKM

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Beaufort, SC, USA
#1
I need some help! I have a 2015 ST. Recently had the front right axle replaced, and a new battery. Ran great for a week, then after turning it off, it would not restart. I get a screen saying immobilizer malfunction and steering fault. I disconnected the battery, put new batteries in the key fobs, checked all fuses. Still will not start and I get the immobilizer malfunction warning and steering fault. Nearest Ford dealer is 40 miles away. Any suggestions?
 


D1JL

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#2
With a code reader; do you get any codes?
Is it possible you disconnected or damaged a sensor on the steering rack?
 


OP
S

SKM

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Thread Starter #3
Have code reader on the way. Car is not running so didn't want a tow bill (yet) until we have checked error codes.
I had the work done by someone else on axle and he says no sensors were damaged.
 


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Osage Beach, MO, USA
#4
When you research this error message, the vast majority of the time it is an electrical fault which causes this problem. It can be anything from a bad battery (even though you just replaced it--there's another forum user who bought a battery which was bad and it took buying another one to fix) to a bad ground to a bad door or tailgate switch. It can also be a dead battery in the key fob. I also found a method for resetting the immobilizer, but it required a Fiesta that uses a key to start.
 


D1JL

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#5
FiST-PS.jpg
Since you did work on an axel and you are getting a steering error, please check these connections.
 


OP
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SKM

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Thread Starter #6
Thanks for info. I will be checking out the battery. Also ask some more questions of mechanic about the steering fault.
 




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