I wasn’t going to say anything but....
The terminology used for UK motor makers was a ‘defeat device’. This was any type of software or hardware that recognised, and was only active during an emission cycle.
A large motor manafacturer beginning with F... got caught, I think in the eighties, for using the bonnet light wiring to presume the vehicle was running an emission cycle, of course if the vehicle went above a certain speed. This then ran modified fueling, this drove a bit crap, but this wouldn’t be noticed on a rolling road. Unfortunately in California the clean air bods noticed the difference. California were pretty hot on this and fined F... per vehicle sold in that US State. And it was big bucks.
F... never did this again and setup in house training courses to make sure its employees new the differences between a defeat devices and what was allowed, and their personal responsibilities.
This Company happened to share this info with JLR. They also had the defeat device recognition training. They also made sure they obeyed the rules so a substantial per vehicle sold fine wouldn’t happen.
I may have some knowledge of the certification process.
My view on the action is, it is just a fishing trip on the off chance. Nothing has been implied as to what they may have done. So, how can they accuse JLR of something, but can’t even give any idea as to what they are accusing them of?
Some bod is gambling a few weeks work, this is then going to cost the authorities and JLR a lot of money.
They should be able to claim all the costs back!