Parasitic Battery Drain Measured on 1990 Audi 100

[Dave]

my a6 wagon had 6 levels of systems shutdown all duly noted in the logs -
all designed to keep the battery able to start the car. after about 2
weeks of inactivity, it will be almost completely shut down. having said
that the proximity sensors for the door locks still work after that sort
of time.


dave
¹08 rs6 avant
¹12 vw alltrack


On 24/07/15 7:00 am, Cody Forbes <cody at 5000tq.com> wrote:

>From: Cody Forbes <cody at 5000tq.com>
>To: Grant Lenahan <glenahan at vfemail.net>
>
>
>They also have levels of shut down. Most shut down to one extent when you
>turn off the ignition, to another degree after some waiting period and or
>locking the doors, and a third extent after 24+ hours of inactivity.
>
>BMW goes so far as to selectively shut down individual components based
>on actual battery voltage and in theory will never let a draw bring the
>battery to a point that it doesn't have a shot at cranking the engine. It
>will then subsequently disable radio/air/etc until the battery has
>sufficiently recharge during driving.
>
>-Cody Forbes (mobile)
>
>> On Jul 22, 2015, at 2:27 PM, Grant Lenahan <glenahan at vfemail.net> wrote:
>> 
>> Actually, on modern cars, they do. The systems shut down after about 15
>>minutes. On newer Porsches - i can¹t speak for audis - when you lock it
>>it goes to sleep.
>> 
>> Grant
>>> On Jul 22, 2015, at 2:19 PM, Huw Powell <audi at humanspeakers.com> wrote:
>>> 
>>> No car designer takes regular two week down times into account.
>> 
>> _______________________________________________