SOURCE: 2003 VW Beetle battery drain
I think I remember running into this once before and found a factory rear speaker amplifier in trunk that stayed powered on then we replaced the amp and the new one did the same thing . then checked radio coding and it wasn't set to proper code so it didn't know to turn off the amp. changed the coding to correct setting and bingo problem solved. hope that might help but coding can only be done by dealership.
SOURCE: 2004 Volkswagen Beetle Radio/CD player
new one with a usb connector and sd card reader is better and cheaper
SOURCE: 97 vw jetta w/aftr mkt. alarm drains battery and disarms on own?
My friend you are faced with a catch 22 problem. The first thing I would like to know is, who installed the alarm system? Did you do it or was it professionally installed. If it wwas professionally installed I would go right back there and discuss the problem with them. It very well could be a defective unit. If you did not have it installed professionally I would disconnect the alarm and see if your battery still get's drained.If so, then the alarm is not the culprit, and you have some hunting to do. If not then you have some testing to do.Next what type of alarm is it? Try to google it. You may be able to find a trouble shooting guide to assist you. I know that you said you just replaced the battery, but the alarm very well may not be the culprit. It could be many other things as a loose fanbelt, bad diodes in your alternator, or some other componet draining your battery.
SOURCE: The CD on my 1999 vw beetle drains the battery
Check to see if power is on even with the key off. if so you need to wire it to a place on the fuse panel that powers up when you move the key to acc on the ignition.
SOURCE: something draining battery on 2000 VW Beetle Turbo
If you are sure you have a key off battery drain, what you need to do is connect an ammeter to the negative side of the battery(disconnect the negative battery cable and connect one side of the ammeter to the battery terminal and one side to the and one side to the battery cable) note the reading and start pulling fuses one at a time making sure to put them back in their proper slot when the reading an the ammeter goes down to normal the short will be on the circuit of the fuse you have pulled if any part of these instructions is too difficult have the problem checked by a dealer
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