Quote Originally Posted by soulstyler View Post
Recently I have found my battery flat on my diesel B5 estate on monday mornings after using it at the weekend. I then jump start it from the wifes Clio (much to her delight) to get to work but seems ok the rest of the week. I have had the battery tested and seems ok and garage tightend loose terminal connections but still dead in morning. Durring the summer the alarm was going off at strange times so I got a fault read done which said a fault with passenger side locks so I leave it unlocked at night. Could the car being unlocked be the cause as suggested by previous threads, or the faulty locks draining power? Not sure what to do next, is there someway of testing where the powers going or should i go straight to auto-electrician. Any help would be greatly appreciated.

Thanks.

George

Oh, i've also got an aftermarket stereo which has been in for nearly 6 months so not sure this would make a difference?!
If the battery is over 2 years old change it, there are tests you can do but a 90 Amp hr battery going flat over the weekend would need a serious drain.