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sprinkles08
sprinkles08, ASE Certified Technician
Category: Audi
Satisfied Customers: 23116
Experience:  ASE Master and Advanced level certified. Factory trained with 17 years dealership experience
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Batter is always dead if not started with 3 days, brand new,

Customer Question

batter is always dead if not started with 3 days
JA: Does the engine turn over? How old is the battery?
Customer: brand new
JA: What is the model/year of your Audi?
Customer: 2006 Audi A4 T1.8 COnvertable
JA: Are you hoping to fix this yourself? What have you tried so far?
Customer: Yes
JA: Anything else you think the mechanic should know?
Customer: I tested the alternator its good, think maybe something is drianing
Submitted: 1 year ago.
Category: Audi
Expert:  david craig replied 1 year ago.

Hi Im David. When the vehicle does start, whats the voltage reading at the battery?

Expert:  david craig replied 1 year ago.

do you still need assistance?

Expert:  sprinkles08 replied 1 year ago.

Hello and welcome to JustAnswer!

If the battery is dying while the vehicle sits then you have a draw. Something is continuing to draw current while the vehicle is at rest, possibly intermittently. What will need to be done is an ignition off draw test. An ammeter will need to be set up between a disconnected battery cable and it's post. After about ten minutes if the draw is more than about 40mA then draw is excessive.

At that point fuses would need to be removed one at a time to see when the draw drops and the components on that circuit can be concentrated on.

The alternator is also a possible cause of the draw. If removing fuses doesn't drop the current flow then the positive cable at the alternator can be removed, if it then drops then the alternator will need to be replaced.