calboy
Member
when I park the car for 2 or3 days the battery goes dead. Then I charge the battery and disconect the positive cable from the post and barley touch the cable to post you can see smale spark. Some thing is discharging the battery?
2002 jetta battery dies in two days
- Thread starter calboy
- Start date
Vince Waldon
Top Post Dawg
There will always be some current draw, since the car has a clock and a radio and various comfort modules that draw some current even when off.
So, there will always be a small spark when reconnecting the battery.
VW has published a Technical Service Bulletin specific to finding rogue current drains on cars like ours that have a bunch of comfort modules that need to be asleep when measuring... the old way of hooking up an ammeter or voltmeter or testlight in series with the battery won't work well.
Can't remember the number... but if you search on "Current Drain" you should find tons of threads here... and some of them will reference the official Service Bulletin.
So, there will always be a small spark when reconnecting the battery.
VW has published a Technical Service Bulletin specific to finding rogue current drains on cars like ours that have a bunch of comfort modules that need to be asleep when measuring... the old way of hooking up an ammeter or voltmeter or testlight in series with the battery won't work well.
Can't remember the number... but if you search on "Current Drain" you should find tons of threads here... and some of them will reference the official Service Bulletin.
fruitcakesa
Top Post Dawg
How old is your battery?
My 03 kept losing charge and it turned out that the battery was old enough that it would not take a full charge.
stamp11127
Veteran Member
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Vince Waldon
Top Post Dawg
Except that it starts with the typical (and poor, IMHO) advice to just get out the ole multimeter and put 'er in series.
I would agree with a previous poster that it's a good idea to start with the basics: is my battery even healthy enough to stay charged? Is my charging system working? Many battery shops will test both your battery and your charging system for free, in the hopes that they get to sell you new parts.
I would agree with a previous poster that it's a good idea to start with the basics: is my battery even healthy enough to stay charged? Is my charging system working? Many battery shops will test both your battery and your charging system for free, in the hopes that they get to sell you new parts.
joep1234
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Does your car have a Monsoon radio system. The amp. in the trunk have been known to not go asleep when everything does. My son has an '05 Beetle that has the same problem. Bought new battery, had the alternator tested and checked the starter thinking something in one of them was sticking causing the voltage draw. Hooked up an amp meter and started pulling fuses and letting the car go asleep. When he pulled the radio and amp. fuses, the car can sit for 2 weeks and still start in the cold weather we has a couple of weeks ago. Turns out the amp. has had some water intrusion. He is considering creating a relay that will only power up when the car is started or drop the $'s for a new amp.
Blacktree
Veteran Member
In addition to the above, you might also want to make sure the trunk light and interior lights are turning off when they're supposed to. Also make sure the mirror heaters and seat heaters are turned off, if you have them.