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Discussion Starter #42
Any word on what happened?
So this still needs to be confirmed but appears that the PCM is faulty and will need to be replaced. Excluding the cost for running diagnostics the cost is estimated to be $1500 :oops:
 

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Ouch. The PCM itself is $1100 of that. I just replaced mine and got lucky with a junkyard unit (although thats a gamble as to whether or not you can program it). I do find it strange that your body functions are inhibited though. I didn't think a pcm going offline would keep you from rolling the windows up but i guess if the ignition has to go through the PCM first, then "key on" could never take place. Keep us posted.
 
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Discussion Starter #44
Ouch. The PCM itself is $1100 of that. I just replaced mine and got lucky with a junkyard unit (although thats a gamble as to whether or not you can program it). I do find it strange that your body functions are inhibited though. I didn't think a pcm going offline would keep you from rolling the windows up but i guess if the ignition has to go through the PCM first, then "key on" could never take place. Keep us posted.
Will do.
 

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Here is the main battery junction box fuse list, BCM fuse list. Center console diagram, along with the PATS / Antenna diagrams that show power.

Remember that fuses are there to protect the wiring from shorts to ground (copper on steel) or over current situations where a component fails internally causing resistance to go down which causes amperage to go up beyond the circuits limit blowing the fuse.

Let me know if you need anything else on the electrical schematics end.

Good luck and stay safe!

J
 

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Here is the main battery junction box fuse list, BCM fuse list. Center console diagram, along with the PATS / Antenna diagrams that show power.

Remember that fuses are there to protect the wiring from shorts to ground (copper on steel) or over current situations where a component fails internally causing resistance to go down which causes amperage to go up beyond the circuits limit blowing the fuse.

Let me know if you need anything else on the electrical schematics end.

Good luck and stay safe!

J

thank you very much ! but now my St is at the dealer, my problem is, sometime the car is not detecting the key .... just before i tow the St to the dealer , i have been able to start the car... i let it run around 15-20 mins on idle with parking brake active .... when i get back to my car ... the motor was stopped ( dash radio open everything ,.... but the motor have shut off and i was not able to restart the car , because its says key free not detect was not able to shut down the accessories ... because no key detected ( yes key is good and new battery )

another sign i can tell is : when i canot open the door and start the car, i open the door with the physical key (into to remote ) , and when i open the door... the 4 flash is suppose to flash but, on helper side the front flasher and the flasher st the back helper side was not flashing

only driver sidewas flashings include front, mirror, and back


and when the car get tow to Ford... when Ford have get time to start cheking it .... my car was ok .... (one day have no problem, one day is ****top)


thank you for your help
 

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Here is the main battery junction box fuse list, BCM fuse list. Center console diagram, along with the PATS / Antenna diagrams that show power.

Remember that fuses are there to protect the wiring from shorts to ground (copper on steel) or over current situations where a component fails internally causing resistance to go down which causes amperage to go up beyond the circuits limit blowing the fuse.

Let me know if you need anything else on the electrical schematics end.

Good luck and stay safe!

J

do you think my problem can be related to the antenna ?

is the antenna can make my motor stopped ? if the motor is running on idle with parking brake activated .... if my key is no more detected ... the car can stop ???

another thing , is sometimes the message on the screen was like : Put key free into the middle console ( this was doing nothing ... the car doesnt want to start ) i try my 2 remote ... samething no work

but at the end the message was no key detected
 

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The antenna ties into the body control module. Have you ever had the console apart? I normally ask this because sometimes people will do something or have work done and then a problem will arise.

Intermittent issue are always the hardest to solve and normally are caused by the dumbest things.

Bad grounds, loose connections, corroded wire.

How old is your battery?

J
 

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The antenna ties into the body control module. Have you ever had the console apart? I normally ask this because sometimes people will do something or have work done and then a problem will arise.

Intermittent issue are always the hardest to solve and normally are caused by the dumbest things.

Bad grounds, loose connections, corroded wire.

How old is your battery?

J
the only things have been done ... i change my air filter one week before the issue appear ...

i dont know if theres somes wire under the air box filter ?

my battery of the car is around 2 years ( have been change under warranty by ford 2 years ago

my battery of my two remotes are brand new from last week ( not cheap ) and work good

now my car is at the dealer since 3 days ... and every day they start the car without problem.... so tomorrow i go to the dealer, take my car and hit the pedal gas until the car get hot ,,, will put the heating air at the foot make sure the bcm get hot too ....

because i need create the issue ...

to me its like a relay that when he get hot , the contact are sticking or i dont know ... its look like the issue occur when the car is hot and outside temperature is really hot
 

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The antenna ties into the body control module. Have you ever had the console apart? I normally ask this because sometimes people will do something or have work done and then a problem will arise.

Intermittent issue are always the hardest to solve and normally are caused by the dumbest things.

Bad grounds, loose connections, corroded wire.

How old is your battery?

J
what you think about my car that stop ... while running on idle with parking brake ?

do you think its normal .... thats the motor shut off ? or do you think if the bcm is in fault .. do you think this module can shut off the gas pump that make my motor shut off ?


thank you
 

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So I do know that with the engine running key not present that the vehicle will shut off after a predetermined amount of time (15 - 20) if it fails to detect motion the VSS (vehicle speed sensor) or change to the RPM via the accelerator.

I tested this with the key present and the same this happened. It shut the vehicle down due to inactivity.

So I apologize if I'm misunderstanding the issue that you are experiencing. Perhaps you could elaborate exactly what is happening.

If it shuts down while unattended (key present or not) then this is a normal function. Not unlike the amount of time a remote start can be programed to shut the unit down after a set period of time.

If the issue happens while driving and the issue is intermittent then it could be an issue with a loose connector / damaged wire / failing module. The PCM / BCM / PATS modules all play a part in this. If a module loses power or connection with the entire system (either CAN or LIN Bus) it will throw a U code that signals a communications loss. These codes are historical until the module responds to the system.

Again if you could please state exactly what you are experiencing someone may be able to provide some insight.

Thanks

J
 

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So I do know that with the engine running key not present that the vehicle will shut off after a predetermined amount of time (15 - 20) if it fails to detect motion the VSS (vehicle speed sensor) or change to the RPM via the accelerator.

I tested this with the key present and the same this happened. It shut the vehicle down due to inactivity.

So I apologize if I'm misunderstanding the issue that you are experiencing. Perhaps you could elaborate exactly what is happening.

If it shuts down while unattended (key present or not) then this is a normal function. Not unlike the amount of time a remote start can be programed to shut the unit down after a set period of time.

If the issue happens while driving and the issue is intermittent then it could be an issue with a loose connector / damaged wire / failing module. The PCM / BCM / PATS modules all play a part in this. If a module loses power or connection with the entire system (either CAN or LIN Bus) it will throw a U code that signals a communications loss. These codes are historical until the module responds to the system.

Again if you could please state exactly what you are experiencing someone may be able to provide some insight.

Thanks

J

Thanks again for your reply , its more clear to me now because you have test it, this can be a normal function

now for the moment my problem never arrived while i was driving on the road .... its only happen when i get park after my ride ( except the shot that the car was parking and run on idle for 15-20 , but this you have test , it can be a normal function if no detect motion vss) what is not normal is after this ... i were not able to restart the car beacuse its says No key detected , this is my real problem ...

last week itook my car in the morning every thing was ok , i drive my car to my job ... i park it ( hot day outside )... i lock the door with my remote... after 2 hours at brake time i go outside to check if the problem will occur ... and bam ... i cannot unlock the door with the remote nothing .... so i open the door with my physical key ... then the horn is going beep beep beep and all 6 flasher were suppose to blink including mirror flashers ) but at this time ... the helper side front flasher and helper back flash ... those 2 was not blinking ( this is what i observe ) ... and cannot do nothing, its said no key detect ( i put my remote key inside the console in the middle of the car ( were it suppose to go if you remote battery is dead exemple ) but its make NOTHING ... its said no key detected



after my day of work ... try again ... nothing , so i let my car in the parking's shop all the night ....

i came back the day after early in the morning with an other car ... and without touching anything... i have been able to unlock the door with my remote, then i start the car ( so my plan was to drive my car to the dealer .... ) so i let run my car on idle with the parking brake .... i go inside the shop , telling my boss and bla bla bla ... after around 15-20 mins i came back to my car .... and the motor was stop ( maybe normal function like you test thank you ) ... but after i were not able to do anything because its says NO KEY DETECTED again ....

so i call a towing, put my Focus St 2015 on the towing,... send to the dealer ... arrive on the dealer ... no one specialist electronic was available at this moment .... ... at 4 PM when a specialist get free of job , they arrive to check my car , but my car everything was ok ... the guy start the car without problem and to him everything was ok


so now im at this point ... the dealer have my car but the car is not doing the issue

today i go driving my car and try to create the isssue , i will do again the test you have did ...i will let the car run on idle with the parking brake too maybe the dealer dont let the car running enought longer



thank you
 

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When you feel like you can recreate the issue try taking a video of it to show exactly what you are experiencing. But if you are reporting that this is occurring after you have driven the vehicle and it prevents you from restarting the vehicle it may be a failing module.

Everything that you have described to me is controlled by the BCM (body control module) you can ask them to reflash the BCM to see if that helps but if the hardware is damaged you may be forced to replace it.

Wish I could be of more help.
Good luck and keep me informed of what you find.

J
 

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When you feel like you can recreate the issue try taking a video of it to show exactly what you are experiencing. But if you are reporting that this is occurring after you have driven the vehicle and it prevents you from restarting the vehicle it may be a failing module.

Everything that you have described to me is controlled by the BCM (body control module) you can ask them to reflash the BCM to see if that helps but if the hardware is damaged you may be forced to replace it.

Wish I could be of more help.
Good luck and keep me informed of what you find.

J

hello again my friend

do you have facebook ? if yes you can add me for sure : Liewiss Pee

i will be able to send you picture and video by messenger

now : the dealer have my car since 3 days and try recreate the issue but no chance ... they start the car and let it run for about 15 minutes, then they drive the car but only in parking of the dealer ... not able to make the issue appear ... ( I THINK NOT ENOUGHT HOT )


today what i have done : i finish work at 1 pm to go to the dealer to try creating myself the issue

first : i start the car and i let the car running for about 25 mins ... you was right : motor shut off after because detect inactivity , but a this time after ... i have been able to restart the car ...

then i go for a ride, stop to put some gasoline into it without stopping the car ... then i go drive the car for about 40 mins and make the oil temperatur goes to 100 celsius approx
i also put the heat fan to the feet at the maximum !! to simulate a HOT DAY like last week ....

then after 40 minutes riding my car , i came back to the dealer without problem ... untill i park the car ... so i park the car ... let it cool down a little bit like 3 minutes for the turbo before shut off the car

after this i went out of the car ....

for about 5 minutes i try unlock and lock the car with the remote ... everything was working at this time .....

like 10 minutes or 15 minutes after ..... THE ISSUE APPEAR ... cannot lock or unlock any door ... cannot start the car , its says NO KEY DETECTED ....

and at this moment no scanner was available for the technician .... and the technician also tell me that if i put the scanner on it , we have to put the car at on position ... but now with the problem ... we cannot put the car to on position .... so thats ****ed up

the service boss join me in the parking after and tell me that is not a ordinary problem , and i have to let the car at the dealer and at the moment a scanner will be available.. the tecnician will check my car ... and tell me too that probably they will need to work with ford support online to find my problem ....

sorry if my english is not very nice i try doing my best for explain


thank you again for all your support my friend
 

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When you feel like you can recreate the issue try taking a video of it to show exactly what you are experiencing. But if you are reporting that this is occurring after you have driven the vehicle and it prevents you from restarting the vehicle it may be a failing module.

Everything that you have described to me is controlled by the BCM (body control module) you can ask them to reflash the BCM to see if that helps but if the hardware is damaged you may be forced to replace it.

Wish I could be of more help.
Good luck and keep me informed of what you find.

J

so if the problem occur only when its in really hot condition ... do you think reflash the BCM can be helpful ?

or because its look like the problem came only in hot temp ... you think the bcm is damage ... ( like pin point welded on electronic circuit is damage because of the high temperature )


thank you
 

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Cold solder joint, vibration, thermal cycling, there can be many factors. Reflash may be the cheapest next step. Remember that regardless of where you purchase a new BCM (should you go this route) it will also need to be reflashed to your VIN.

J
 

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they did not find the issue for the moment and i was too much pissed off ....they buy back my car and clear all the amount to ford canada and i just have my new Edge St 2020 401 A group today :)

they will let me know what was the cause of the issue

thank you again for all
 

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Please help... Two key fobs, both are good, both batteries are good. Car battery is good. All these have been confirmed.. BUT... Car will not start. No key detected. Again, the car battery is fine. The 2 keyfobs I have both have new batteries. Also confirmed in good working order. Here is what is happening...

Last week when giving the car hard on the thottel the car died. I opened the hood and by giggling the positve battery cable I could use a fob and unlock the car and it would start up and go. This happened 2-3 more times but when I tried to start Sunday afternoon.. no key detected. I tried checking the terminals. All power works... lights, radio, everything. When I press the start it says NO KEY DETECTED. I unhooked the battery cables... this fixed before but now no. Nothing.

I tested the battery and it is fine (reads 12 volts). I tested the key fobs and batteries work fine. but clicking unlock or lock or trunk lid... nothing. I placed fob in console on the pad where the sensor is.. NO help! I replaced the battery cables this afternoon. NO help! I removed the air filter box and traced all the wires and nothing wrong. I checked every fuse under the hood, under the dash on passanger side and in the trunk... every fuse is good.

As you can tell I am super frustrated! Can anyone give me advise as I have been scouring the internet for hours and I cannot find a solution. I would love to take to the dealer.. No warranty and no money. Any help would be appreciated!
Have you checked all of the Fuse panels? I have added to my stereo system. And I had found out by trial and error, I had looked at a lot of forums. Just a thought.
 
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