Battery Draining on 2004 Infiniti QX56

Hi, the battery is 1 1/2 years old. It drained completely dead a couple of weeks ago. I called AAA. He said it wasn't the battery. We got it charged and it was fine until last night. My wife was sitting in the car when it was off and heard a clicking noise and some dash lights were flickering. The battery was dead. I jumped it and it was dead again in the morning. Any idea what it might be? If so, how much should it cost? Thanks

by in Huntington Beach, CA on September 20, 2010
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1 answer
ANSWER by , September 20, 2010
If the battery is good for sure, there must be a parasitic load on one or more circuits. I've seen mechanics failed to pinpoint the problem sometimes. If you have GOOD ELECTRICAL SKILLS and have an ammeter you might be able to trace it. However I'd strongly suggest to take it to a shop who is familiar with Infinity/Nissan, the "Sleep Mode" times and good with electrical trouble shooting. On various models I have seen glove compartment stuffed so much that it's doors won't be able to push the light switch all the way in, so it will stay on. I was just traced down a parasitic load to the seat control module for a Mercedes Benz. On this the battery died also overnight and the module needs to be replaced. Zee