Permanently disable ISA Module?

[peejeev]

Has anyone in the UK/EU has an ISA module fitted to their car yet? Was wondering if anyone has had a look at one yet? Wanted to study the board with the goal of permanently disabling it (I know you can switch off per Journey). Expecting to get a car with one soon.

 

[rjenkinsgb]

I've never seen one, but they look like a typical concept approved by some committee with zero technical knowledge!

My car has has road sign recognition etc., with a speed display and optional limiter (which I've never tried).
There are many places and conditions where it show the wrong speed, often far lower than the actual limit.

eg. A common one is side roads in towns/cities that have speed limit signs lower than the main road you are driving on - the speed limit seen by the car can change to 20mph on a 40 or 50 mph road, or it can miss the derestriction overhead sign in variable speed limit areas.

Even the frequently-updated speed database in the Tomtom navigator has some serious errors in places, so that's not completely reliable either.

For any unit with its own GPS, I suspect disconnecting the CAN link to the vehicle, or unplugging the antenna or a good wrap of copper foil over the box if it has an internal antenna should work?

 

[peejeev]

Yeah see I was wondering if just shielding it with copper foil (or even I've got some lead flashing lying around) would do the job?

They are a terrible idea, even if they use GPS, i've had Google Maps for example think i'm a few roads over just because there were tall buildings that bounced the signal.

I am interested to see a breakdown of one though.

 

[upand_at_them]

If you put a copper foil shield over the box doesn't the shield have to then be grounded? Doesn't an ungrounded shield just re-radiate the RF?

 

[Pommie]

Pardon my ignorance but what is an ISA module. Tried google but just got hits for International Auditing and Assurance Standards. A link would be handy.

Mike.

 

[upand_at_them]

Intelligent Speed Assist:

https://www.aisin-mobility.eu/connected-solutions/intelligent-speed-assist

 

[augustinetez]

It wouldn't surprise me if disabling ISA flags a fault in the cars computer system (as opposed to the inbuilt option to turn it off).

 

[picbits]

I'd double check if anything in your insurance mentions invalidating it if any of the inbuilt safety devices or controls are intentionally disabled.