Quote:
Originally Posted by rfuerst911sc
OK so it looks like the opinion we have on popping the front hood and it draining the battery is a solid " we don't know "  So let's drill down further. Is it safe to assume if the hood latch is pulled, but the hood is left in the down position and the light is not on does that mean no battery draw ? Or is there " some " draw but the micro switch hasn't activated to light the bulb ? I am really curious what the answer is because these cars do seem to consume battery power at rest. Maybe it's just the security system ? |
My understanding is that our cars do have a small draw when they are sitting turned off. I believe its some of the electronics that stay powered up such as the alarm, and maybe the DME and immobiliser
To completely kill all power you need to disconnect the battery which then has the effect of erasing the stored settings in the DME/ECU. When you reconnect the battery, the car will need to relearn stuff such as air/fuel mixtures and other engine settings. It may also effect any Tiptronic settings and driving modes it has learned
I could be wrong, one of the gurus here can elaborate