It appears that Renault have made a new firmware to the Sevcon controller (ECU) that prevents that we can tune the car. All vehicles manufactured after July 2016 may have this firmware installed. There is also a danger that they may find to install this on your car once you have it in for service. You must tell them that you will not have this firmware. This is not something they can force you to have since the controller is yours and not something you rent. It's just what's inside the battery box you rent.
But I see the dilemma here. How can we say this to them so they do not update your controls. well one must simply try to find something smart to say.
For an example:
- I'm happy with my firmware and would not have you to update the controller.
- or simply tell them that I want to have the ability to use various tuning equipment on this vehicle when it no longer has a guarantee. I've heard that the new firmware takes away this opportunity and this will make my car less value if I once wild sell it later.
3.or even better. Do not take the service at Renault. use any other Service Centers if you must. Use only Renault service if you have problems with battery
These were just a couple of things fell out of my head so I am sure some of you have a better argument about what one should say to them that they should not update your controller.
I'm not 100% sure yet whether they at all can use this firmware on cars produced before July 2016 so we have to just wait until it pops up a Twizy owner who has been unlucky and got this update.