I’m looking at an 07 S Type 2.7 dt tomorrow, very low mileage with full history and mot. All appears perfect except the seller says they had to replace the battery recently and since then it’s had warning light for it but it’s common problem and needs a reset etc. only I can’t seem to find any information about it other than things like the epb and windows etc needing a program reset. Any suggestions of what I need to check and look for? I have an OBD fault code reader to take with me and plug in.