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Message: Need some quick help - current draw in Audi
Changed By: grant
Change Date: October 04, 2014 04:07PM
Need some quick help - current draw in Audi
Change Date: October 04, 2014 04:07PM
Need some quick help - current draw in Audi
The 8-year old battery in my audi has been the battery from heaven. After 8 years, even if i left it for 2 weeks untouched, it would fire eagerly up.
Until this morning. Oddly, the car was driven extensively on the highway this week - so it had a great charge. Solenoid click. Jumped easily, took a charge but would lose voltage with time (trued up to 2 hours). When i started it the voltage dropped from 12 1/2V to < 8. Normally it drops to > 10V, so it is dying.
Yet it happened so fast! I took some current draw readings at the battery, with the key off and out of the ignition - nothing on, no bulbs. ~400mA. Seems like a lot - 10A-H per day. 5W. My 2000 boxster draws ~ 100mA. I did not have time to pull every fuse and observe the result, but i pulled quite a few with only minor results - no big winner.
Is this normal for cars with lots of electronic doo-dads? In its day (2002) the S6 avant was Audi's hot rod and technological showcase - it has everything that was a big deal back then.
Any insight?
Grant
Until this morning. Oddly, the car was driven extensively on the highway this week - so it had a great charge. Solenoid click. Jumped easily, took a charge but would lose voltage with time (trued up to 2 hours). When i started it the voltage dropped from 12 1/2V to < 8. Normally it drops to > 10V, so it is dying.
Yet it happened so fast! I took some current draw readings at the battery, with the key off and out of the ignition - nothing on, no bulbs. ~400mA. Seems like a lot - 10A-H per day. 5W. My 2000 boxster draws ~ 100mA. I did not have time to pull every fuse and observe the result, but i pulled quite a few with only minor results - no big winner.
Is this normal for cars with lots of electronic doo-dads? In its day (2002) the S6 avant was Audi's hot rod and technological showcase - it has everything that was a big deal back then.
Any insight?
Grant
Original Message
Author: grantDate: October 04, 2014 04:07PM
Need some quick help
The 8-year old battery in my audi has been the battery from heaven. After 8 years, even if i left it for 2 weeks untouched, it would fire eagerly up.
Until this morning. Oddly, the car was driven extensively on the highway this week - so it had a great charge. Solenoid click. Jumped easily, took a charge but would lose voltage with time (trued up to 2 hours). When i started it the voltage dropped from 12 1/2V to < 8. Normally it drops to > 10V, so it is dying.
Yet it happened so fast! I took some current draw readings at the battery, with the key off and out of the ignition - nothing on, no bulbs. ~400mA. Seems like a lot - 10A-H per day. 5W. My 2000 boxster draws ~ 100mA. I did not have time to pull every fuse and observe the result, but i pulled quite a few with only minor results - no big winner.
Is this normal for cars with lots of electronic doo-dads? In its day (2002) the S6 avant was Audi's hot rod and technological showcase - it has everything that was a big deal back then.
Any insight?
Grant
Until this morning. Oddly, the car was driven extensively on the highway this week - so it had a great charge. Solenoid click. Jumped easily, took a charge but would lose voltage with time (trued up to 2 hours). When i started it the voltage dropped from 12 1/2V to < 8. Normally it drops to > 10V, so it is dying.
Yet it happened so fast! I took some current draw readings at the battery, with the key off and out of the ignition - nothing on, no bulbs. ~400mA. Seems like a lot - 10A-H per day. 5W. My 2000 boxster draws ~ 100mA. I did not have time to pull every fuse and observe the result, but i pulled quite a few with only minor results - no big winner.
Is this normal for cars with lots of electronic doo-dads? In its day (2002) the S6 avant was Audi's hot rod and technological showcase - it has everything that was a big deal back then.
Any insight?
Grant