Originally Posted by
zj93i6
For the better part of two years I have had this problem. If I don't drive my 2005 at least once every two days, on the third day the battery is dead. I have put a meter on and get a .4 milliamp reading, pretty normal. Had the car into the dealer several times, they could not find the fault (one symptom is that the spoiler deploys when you boost the battery). On my most recent attempt I have been told that the "Body Control Module" is responding. It seems that it wakes up periodically and drains the battery. The replacement cost is just under $3,000. Not planning to do this put will install a trickle charger instead. Any thoughts , comments ?
I had a similar problem. My excessive battery drain was caused by a faulty alarm module (up under the windscreen wiper grill). These cars are getting old now and the rechargeable batteries in the alarm module had deteriorated so much that they had leaked out all over the circuit board and destroyed it, it was beyond repair. So I unplugged the module and my excessive battery drain is gone. Have a look at your module, or just unplug it, as its worth a try.