Ranger Mods

Hi all,

Today is around 35deg and just noticed my 2018 PX2 ranger is saying it's 10deg. Didn't shift all day. Has anyone else experienced the same issue? Is there a way to reset this or do I need to contact Ford?

What was the temp on the Sync 3 unit. I assume it was the same, as it is the same sensor.

I would say you have a faulty outside temp sensor as I have never seen it happen before.

Hi Stewart,

Yes it displays the same temperature. It was displaying correctly until I disabled auto stop start. Coincidence maybe?

I assume you changed it back and still had the fault?

Do a reset on the FCIM, go through the menu on the side, I think it's in service functions or simular.

Yes tried switching it back on the day with no change. Left the car parked overnight and it seems to work fine after turning it on in the morning. Really weird

It happened to me this summer too. I was doing offroading at high altitude in the Alps and the thermometer fell correctly to 6 ° C. When I went down and reached an ambient temperature of 20-25 ° C, the thermometer remained at 6 ° C.
I tried to stop and restart the pick up several times, but the problem stayed.
The next morning the termometer started working normally and since then he has never given me any problems.
Certainly the problem is not attributable to Foscan settings. I began to use Foscan only few weeks ago.
I do not know whether it was due to a sensor problem or a softwere bug.

Thank you for that, sounds identical to what happened to my car. Its strange but at least now it has seemed to have fixed itself

Mine plays up at times.

I have the opposite.
Reads higher than actual by 15 degrees, but not all the time.

Where is it located?
Maybe front mount Auto cooler lines have been installed close to it and getting affected by their heat?

Left hand side front behind behind plastic guard next to radiator. You will need to remove the radiator top plastic cover to access.

Thanks.
Lower grill area? Or up high?

Brett_32i wrote: ↑Sun Oct 27, 2019 9:57 pm Thanks.
Lower grill area? Or up high?

its mounted about in the middle but left hand side. its next to the horn. i can get to mine very easy because i got a bullbar but in my old px1 on a hoist i could each up and grab it as well no issues.

Grabbed it easy through bumper.

When trans cooler was mounted, they attached temp sensor to back of mounting plate, so I think it was reading contained heat.
Have clipped it to the front side now, but haven't had any hot days in traffic to test it.
Pretty sure should be good now

Hi
Reviving an old thread here.

I have the same issue as the OP. Only realised how bad it was when i decided to monitor with Forscan.
The temp display on the IPC and sync unit come from the same source which is the FCIM.
The FCIM gets the temperature from the AAT sensor behind the front bumper on the passenger side.
The PCM also uses this same sensor as an input.
I have confirmed this by using a heat gun and a can of freeze spray.

In forscan you call up a PCM PID called AAT but for the FCIM it's called ExtTemp (on my 2.2).

When i sprayed with the freeze spray both PIDs dropped rapidly but as the PCM value climbed back to ambient temp the value from the FCIM only climbed 2 degrees.

I've also monitored on a drive where both PIDs start at 24 degrees in a cool basement parking.
Outside temp is 35 odd and FCIM value only hits 26 degree after a 20 min drive but the PCM PID value reads 35deg and gets to the value rapidly with driving and airflow across sensor.

The update rate seems quite random as other times it may display the actual outside temperature change.
Initial switch on value is the same between the two modules but only from a dead start i.e. all vehicle electronics have shutdown.
Turning ignition off and then on again has no effect...

I was initially thinking to update the IPC to the latest known indicated on Forscan but realised it's the FCIM that is not updating its value.
I then checked the "Outside temperature source" selection in the as built for the IPC and the two options are FCIM or Aircon control system so essential the same...

Quite annoying as this setup renders the outside air temp display quite useless.

Has anyone solved this with an update to the FCIM?

Has the PCM been updated at any point, tune etc?

Did you try battery disconnect / reconnect?

Had a lot do it when doing PCM remotely but they came good after doing a reset on the PCM or battery disconnect.

Yes to all. Ford updated to latest two years or so ago.
Had a remap in December last year.
And have done battery disconnect many times in the vehicles life including recently.
I did a module reset yesterday on the FCIM.
This temperature issue has been occurring for as long as I can remember.
Today on my way home it went up and down a few degrees following the PCM value but with a big lag.
It updated far less often than the PCM value did.

Have given Forscan Team the service routine data for the FCIM "Outside Temperature Sensor Reset" and asked they add it.

Procedure will be "AC button and Recirc button have to be pressed together, then within 2 seconds the AC button has to be pressed" when the service routine is run in Forscan.

See what they come back with. Although I could do it in Melbourne it does not really help you. Also it may or may not fix the issue but will clear all learned values.

Look forward to it being added to FORScan! Thanks!

I assume then that a FCIM Module reset doesn't achieve a similar result?
What values does it learn and for what purpose regarding ambient temperature?

Would there be any harm in just doing the firmware updates indicated as being available?
I have updates indicated for IPC, FCIM and APIM. (and a couple others like TRM, ABS but not fussed with that)

Reset is just a power cycle, it does not cleared learnt values. Learnt is as much info as anything I have suggests.

Can try if you like but I usually don't recommend people update the FCIM, sometimes updating that module fails and the only way I have been able to recover them is on the bench.

Last binned FCIM update was done with Ford's software and had to be removed. Could not be recovered in the vehicle.

APIM and ABS can end in tears and no point doing TRM.

Also just because Forscan says there is an update it may not always be correct for all modules.

Ok, thanks, understood.
Won't do the updates then.

I think waiting for the service procedure may be a better idea!
Any idea what the usual timeframe to implementation and software release may be?

Otherwise i'll just keep checking FORScan periodically.

Please try this test build. https://forscan.org/download/FORScanSet ... 220218.exe

There is no notation about procedure so if it fails to do anything then do this straight after you press run "AC button and Recirc button have to be pressed together, then within 2 seconds the AC button has to be pressed" .

If it fixed it and you specifically needed the button combinations also then let me know.

Thanks Stewart!

So what I found is if I just press run, the procedure goes to 6% asks for ignition Off and then On.
It then continues to 100% and says Successful.

If I press run and do this: "AC button and Recirc button have to be pressed together, then within 2 seconds the AC button has to be pressed"
It still runs to 6% asks, for Off and then On and completes successfully.

So no difference in result so I assume it probably doesn't require the button presses if it completes successfully.

Have not tested on the road yet to see if there is a difference.

Whether it fixes it is another thing but it completes successfully which means it had a valid response from the FCIM.

Thank you, let me know how you get on.

Unfortunately no change in temp update behaviour.

Yesterday it was 25deg in basement parking reported by both readings.
AAT within minutes climbed to 30deg when i drove out.
FCIM temp remained at 25 until about 15minutes later when i clocked just over 100km/h on the highway.
It then updated as the temp went from 30 to 31 and back again.
This i had me thinking speed related update trigger.

Near my destination it was about 27deg but reading remained at 30 regardless of speed until one point where i braked from 50km/h then it suddenly dropped to 27.
This was likely coincidental and has nothing to do with the driving situation so doubt it is speed related.

Other days it will change quickly from basement temp of say 27 to 28 when i drive out.
No reason or pattern that i can see.

It's a pity the FCIM is a risky update. Curious if Ford fixed this bug.
Though this has me wondering if this is why Ford removed it from later XLS Rangers here in SA.

I get it now and then where to temp shows low and should be high. It generally fixed itself somewhere along the trip so I have never looked into it. I'm using a FCIM from a PX3 with latest firmware so I do not see replacing it or updating is going to make the problem go away.
If PCM is showing correct then I have nothing more I can add....