Just replaced the battery on my 2014 civic 2.2d-tec. No issues changing battery and running fine. The problem is the built in sat nav, as with most cars needs a 4 digit code. On checking the card for sat nav, no 4 digit code just a serial no. I phoned my most local dealership to be told that because of the type of sat nav I have (series 4000) I would have to bring it in to have the code put in there. I would also have to bring my V5 and driving license as proof of ownership. I just can’t understand why the need for such security, it’s hardly a top notch sat nav. If anyone could enlighten me it would be appreciated.