Question about 2001 Volkswagen Golf
2002 golf . replaced battery 18 months ago now back to not enough power to start every fews days need a jump . battery checked okay . what next ?
You need to check if some accessory is drawing power when the car is not running.
About any inexpensive digital multimeter will have a 10 Amp unswitched range. You would need to detach the negative (ground) cable from the battery and put the meter in series with the leads plugged into it to access that range. - Do NOT turn on anything while so connected! It will fry the meter. Normally, there will be a very small amount of current flowing even with everything 'off.' This is normal as there are things still 'on' even though the car isn't running; the ECU will draw a tiny bit, your radio will too and any kind of clock that keeps time will also draw some current.
If you find anything over 1 ampere, you have a problem which must be found as this will drain any normal battery over a two-day period.
One item may have a failed part and cause this; your alternator. It has semiconductor parts in it (normally 6) called diodes and if one has been slightly damaged, it can draw current from the battery with the engine off and not light the warning light on the dashboard.
Posted on Sep 28, 2009
Testimonial: "thanks for the info. just had my son get the battery checked at another place and they found a bad cell.original place of purchase showed it was good"
CK FOR DRAW UNHOOK NEG HOOK UP TEST LIGHT FROM BATT TO CABLE TO CK IF THERE IS A DRAW START PULLING FUSE IN TILL CIRCUIT THAT DRAW IS ON IS FOUND PLEASE PULL FUSE ONE AT A TIME & REPLACE IF TEST LIGHT DOESNT CHANGE MAY HAVE 2 FUSE PANEL IN CAR & UNDER HOOD
Posted on Sep 28, 2009
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Posted on Jan 02, 2017
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