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intermitten engine crank no start

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my girlfriend has a 2017 hyundai santa fe sport with a aftermarket 2 way command start (auto mate) with fortin bypass module. For the last year to year and a half she has been having issues with the vehicle not wanting to start with the command start, the engine cranks but does not start. i sat outside one day and tried starting it with command start, out of 7 attempts it started 3 times. Now this is very intermitten. sometimes it will start the first attempt, other times will not, we brought it to the dealer and they checked it out found nothing wrong with it, it then then tried starting it in front of the service advisor and it did it again, engine crank but no start. They replaced the bypass with a new one, and it worked fine for a few months now its doing it again. could this possibly be an issue with the firmware or is the bypass module maybe sesitive to extreme cold weather? where we live it gets pretty cold -30c and colder.
asked Mar 26, 2019 in Hyundai by slavomir rohac (130 points)

1 Answer

0 votes
Being temperature related is unlikely. We have days colder than -30C in Canada and have no reports of this.


Intermitent issues are often something physical (a connection, wire, connector etc), not firmware based. If it was firmware based it would always repeat the same problem.
answered Mar 26, 2019 by Derek (177,890 points)


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