how you figure it will void the warranty? possibly if the software caused an issue I could see there being a problem but if US law was applicable then the dealer would have to show the hacked software caused the problem. I doubt they can blame someone enabling a horn beep to a transmission issue for example. If the horn stuck on and burned out than that would be a different issue and sure they could deny a horn repair.
all bets are off though as it's a different country so i have no idea of what the laws are there. I'd probably be more concerned about getting a ticket - if it's illegal to sell that feature in a new vehicle is it illegal to use it?
for the OP- if you are really into 'fixing this' then reach out to customtronix and see if they have a "fix".
Chrysler/Dodge/Ram ICOS RAX-jailbreak BRONZE | Customtronix
They've hacked the software and have found ways to enable features not originally assigned/allowed on specific vehicles. Things like enabling typing on the screen when in motion and turning on the existing inputs for front, rear, and cargo cameras when not originally on the vehicle. If it's just something disabled on your particular vin due to the place you purchased the vehicle they may be able to help.
basically you donwload the software onto a USB drive and plug it into the D's USB port and it installs. To return to factory software you use another download on the usb drive. Pretty harmless.
It will cost you though- ask for a discount but the software only "bronz package" seems to run about 110 Euros discounted. That allows all their software options.
PS- the software actually comes basically ready for any brand or model car/truck/whatever (all the FCA brands, even freightliner are in there ready to go if you dig in the image) that it is used in and then it queries the car somehow for what options/features/etc for that particular car to enable or disable. Probably on first boot it checks the vin or something and sees to disable that feature. So the software is already customized for that region- it's just yet another bit of sloppy programming that they don't remove or gray out the checkbox in the settings screen when they disable it. I'd call it a bug.