Hello,Short version: Clio III Bj 2010 shows only a large number of warning lights, what everything is defective (but still drives), and then goes when the vehicle is switched off and does not pull the key off (!). Even after suffocation, light, radio etc. remain on. After battery from time to time it can not be started.Long version: We have very strange problems with the electronics of our Clio III, built in 2010. For a long time the turn signal has worked on the right, sometimes on the left, at some point Then the windscreen wiper was broken and a new windscreen wiper motor and control unit (UPC) was installed in the workshop about 6 months ago. It really started about 3 months ago but with the error message “Check injection”, where it actually did not rotate more than 3000 revolutions. After the fault memory was reset in the workshop it ran again 250km and then started a real fireworks of error messages (check servo steering – the Power steering actually did not work anymore, brakes were defective, almost all warning lights were active, continuous unlocking, turn signals no longer working,…). Fortunately, we just made it home (the car was still driving, and everything worked except for power steering and turn signals). After it stood for 3 weeks, the error messages were gone again. We then cleaned all the ground points visible in the engine compartment (were visibly corroded) and it ran wi without any problems for a few months (except for the “check airbag” error message, which appears again and again for years and disappears). Recently he showed (after approx.30 min drive) many error messages again and when we turned it off and pulled the key off, the ignition stopped and the engine continued (!). We then strangled the engine – ignition, light etc. everything remained on (and also did not switch off). After we switched off the battery After 2 weeks of standing, the battery was completely empty and we installed a new battery (the old one was already over 10 years old). After that, he jumped and drove again without any problems. But now, on the third drive after approx. 100km, he started again, first “ESP defective”, then continuous unlocking, turn signal is no longer possible and at the end of the drive he started again. Turn off the same behavior after about 10km again – to get the engine only by strangling, to shut off ignition only by battery, and then it can’t be started anymore. Battery is new and full now (12.7V). Does anyone have any idea what this might be about? We are slowly ending up with our Latin… It must be a mistake in the electronics, he drove in between without any problems. Just where to start?