You can disable the LDA (lane departure thingy) which I have done, as, driving in mostly rural areas, I don't need to be nagged every time I take a sighting line through a bend! I haven't tried to disable the collision warning system as that might have insurance implications.The road sign function is not reliable, so I've tended to rely on TomTom and ignaore the Multi function display.
As for the differences, Auris and Avensis have an early version of ADAS AFAIK, using a different laser and maybe software to Prius 4 and CHR. The latter have what is known as centrimetric laser which is less troublesome, possibly due to lower tendency for false alarms. Someone on here will have a better understanding I have no doubt. Toyota have issued a TSB re Auris and Avensis.
As BT says, see the Owners Club for pages of discussion. I've not had a recurrence of issues since 7 February when the current modification was carried out by my dealer, as for various reasons I've been mostly driving locally, but I may get over towards the troublesome area* later this week to recheck whether the cure still works, and to feedback to Toyota UK. Certainly there is now a heater in the module sitting in front of the rear view mirror, and I checked using an infra red thermometer.
* Error messages seem mostly to begin when in slow moving traffic in roadworks. More detail on the OC site.
Edited by nortones2 on 02/03/2017 at 10:37
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