Short answer - depends on what the issues are doing - is the car actually faulty just because the systems aren't fully funtioning. You need to check with someone, that really knows, (a properly trained person in these matters) at your insurers. This you can also use to hopefully speed up getting the issue(s) sorted. Longer answer - first, 'blokes' on the internet can give their opinions and (remembered) experience, such as I'm doing, but what about knowlege, training and qualifications, personally I (ETA) don't have any in this area but how would you check if I said I did. If these systems can, freely, be turned off by the driver, usually going through driver computer menus or on switches near the driver then obviously there is a choice about their use so they're not mandatory - but - if your insurance is based on their use that would be another matter, and no doubt (ETA) anyway if there was an accident the non-use would be noted. Any system, whether used or not, doesn't take away the driver's responsibility to actually driver and control the car. If the faults in the system(s) doesn't interfere or hinder with the car being driven properly by the driver then them not working (if not mandatory) doesn't matter. Good piont about recording anything on an open public (or any) website, if you need to ask about anything that you think might (I don't think it will) get you into any trouble then contact the correct appropriate people non-publicily, it might still be recorded of course. Good luck.