Flashing Modules - External charger setup

[Focus-MK4]

Hi all,

I´m keen on trying to update my modules.
Already read the "How to update module firmware with FORScan" and for me flashing a module only makes sense without having the risk that the car will shutdown itself.

When I play with FORScan settings while sitting in the vehicle (Focus MK4) the car turns itself off after several minutes. Even when battery is fully charged and I have turned all items off which can be turned off. Some are still on as I cannot turn them off e.g. DRL is always on - not possible to turn them off while ignition is on but car is not running.

I´ve a (small) battery charger (5A) which I use to charge the car but there is no big time difference if the battery is charging or not. Even with the charger plugged to the car it will turn off after a certain amount of time.

So the question is how to avoid this to be able to flash modules?
What kind of charger / setup is needed ( A ? ) so that the car will stay always on and the flash process will not get interrupted.

Cheers

[laibin]

I am curious about this too. I am also interested in updating firmware. So, any suggestion is welcome.

[Pato186]

It updates the module even if you turn off your alarms. I've tried it before and it wasn't a problem

[NvTwist]

Code: Select all

Ignore everything I posted below…. But still good luck

I use the normal style battery charger. Has 3 different charge rates 2A,10A, 25A. Right before turning on the Turk and scanning I attach the charger directly to the battery and set it at 2A…. Turn in truck and attach $the computer and link to truck. In the bottom right of the softwares window is the current battery Votage, stay above 12v & below 13.6-v with the headlights on and trucks acc on I’ll set it to 10A and when it reaches the 13’s I switch it back down to 2A.
Btw trucks a ‘17 Raptor, 800cca arm battery and truck draws around 8 amps. Allows me to take my time and not feel rushed insuring I don’t screw up.
The important part is to keep the battery supplying no less than 12v while vehicles drawing power.
Hope that helps.

[Ecmbuster]

I use the normal style battery charger. Has 3 different charge rates 2A,10A, 25A. Right before turning on the Turk and scanning I attach the charger directly to the battery and set it at 2A…. Turn in truck and attach $the computer and link to truck. In the bottom right of the softwares window is the current battery Votage, stay above 12v & below 13.6-v with the headlights on and trucks acc on I’ll set it to 10A and when it reaches the 13’s I switch it back down to 2A.
Btw trucks a ‘17 Raptor, 800cca arm battery and truck draws around 8 amps. Allows me to take my time and not feel rushed insuring I don’t screw up.
The important part is to keep the battery supplying no less than 12v while vehicles drawing power.
Hope that helps.

Absolutely incorrect and NOT advisable - PERIOD!
Read the last entry and get educated.
https://forscan.org/forum/viewtopic.php?f=4&t=22115

Been there, done that, wrote books about it, have all the "T" shirts.
Battery chargers are garbage, a floating power supply is the only correct method.
Your "advise" is the road to hell.

[NvTwist]

Don’t take into consideration the ac ripple interfearing ya know I’ve read thru the steps provided and have attempted 3 times prior to attaching the charger and twice with the charger and the results have been consistent …..no change on the feature I made changes to & features I never clicked on or changed stopped working. Turbo gauge mo longer reads pressure, intelligent unlock non functional. Can’t turn off apple car play in the settings. I‘very only tried activating global open and close and Lincoln mirrors…. That’s IT.
Perhaps the DONT USE A CHARGER SHOULD BE INFTBE WALK THRU.
Just wondering what cords gonna want to charge me tp re flash with their OE gear now. Thank God nothing got bricked, prob still gonna insist on replacement .

[spender2611]

I personally would only flash the firmware of modules with a short time period - for example BCM 1-2 minutes or RGTM or PDM or DDM...

and only if its necassary. I never would do it for fun or experiments. It is to risky in my opion as ForScan ist at the betastage and files provided by forscan could be incorrect. There is also always the risk the AsBuilt changes after firmware flashes and FDRS or ForScan Support is needed. ForScan is not able to correct this at the current stage.

With a 100% fully charged battery and battery charger on I have flashed my BCM and RGTM this way with an ordinary CTEK MXS 5.0 battery charger on. My car didnt shut down and everything worked fine. No Problems at all, but the flashing time was very short.

Maybe i am wrong but i also had the feeling while the flashing process was done the module always was "triggered" by erasing and writing so it could not "fall asleep".

For a TCU Update, which takes several hours a power supply and not a charger is necassary. Like ECMBuster said... I never would do that, without a power supply and even with a power supply i would have the fear something crashes or the module is bricked, because it takes so long.

Does your car show the message that it will shut down because of battery saving?

[NvTwist]

Does your car show the message that it will shut down because of battery saving?

The primary reason for connecting a charger/PS to the vehicle is to prevent the vehicle from going to sleep shutting down Acc power and turning off the ignition while programing.

[spender2611]

Does your car show the message that it will shut down because of battery saving?

The primary reason for connecting a charger/PS to the vehicle is to prevent the vehicle from going to sleep shutting down Acc power and turning off the ignition while programing.

You are absolutely correct, but he said that his car also shuts down with a charger connected to the battery. So my qestion was if there is a message on the display or the car is just shutting down.

[spender2611]

Maybe a jumper pack like this https://www.amazon.de/gp/product/B015TK ... UTF8&psc=1 can be used to stabilize the 12 Volt insstead of the battery charger?