Hi all, long time since I've been on here.
Anyway, I'll cut to the chase, my 2002 Cooper S battery was rather old so I replaced it last August. Up until December I could leave the car for almost a week and it would start straight up. But now since Christmas if I leave it for over a day, it dies and needs to be jumped in order to start it
I've charged the battery up, had a multimeter on it and it shows between 12.6V and 12.75V and when I start the car I get around 13.7V to 14.2V, so I'm happy that the alternator is charging the battery.
So this leads me onto the thinking I have a spurious drain on the battery. I've not installed anything new in the car for a long time, so that can't be it, which means I'm going to need to test for the drain.
My issue is that with the battery located in the boot, I'm not sure what the best way is to do this, because if I'm going to have to start pulling fuses, it'll be a lot of running around. Is there a way to block the door/boot sensors to stop the car from thinking the door/boot is open?
Are there any common issues that I could look at first to maybe locate the fault? Is it likely that the fault could be stored in the ECU and a simple OBD reader could diagnose the issue for me?
Thanks in advanced for some help.
Anyway, I'll cut to the chase, my 2002 Cooper S battery was rather old so I replaced it last August. Up until December I could leave the car for almost a week and it would start straight up. But now since Christmas if I leave it for over a day, it dies and needs to be jumped in order to start it
I've charged the battery up, had a multimeter on it and it shows between 12.6V and 12.75V and when I start the car I get around 13.7V to 14.2V, so I'm happy that the alternator is charging the battery.
So this leads me onto the thinking I have a spurious drain on the battery. I've not installed anything new in the car for a long time, so that can't be it, which means I'm going to need to test for the drain.
My issue is that with the battery located in the boot, I'm not sure what the best way is to do this, because if I'm going to have to start pulling fuses, it'll be a lot of running around. Is there a way to block the door/boot sensors to stop the car from thinking the door/boot is open?
Are there any common issues that I could look at first to maybe locate the fault? Is it likely that the fault could be stored in the ECU and a simple OBD reader could diagnose the issue for me?
Thanks in advanced for some help.