Hi all, My car's battery getting fully drained in about 4-5 hrs. Voltmeter reading will be less than 9 within 2 hrs , so my engine won't start. Battery is brand new, only 3 months old. There is a constant discharge of 3amps as per voltmeter reading. If I disconnect -ve terminal, everything is fine, there is no leakage in the battery . Whenever -ve terminal is connected, alternator makes "click" sound, as if it is starting the motor. My assumption is ECU behaving abnormally. I didn't observe any electrical instruments/lights malfunction during the run, so i'm not suspecting any battery issue here. 2 days before this incident happened, AC was shutting off intermittently while on the run. If I put it to blower, it was behaving as if its in #1 position. Next day morning everything back to normal . But issue re-occurred after 2-3 hrs of driving. Now AC is not at all working. Coolant is at MAX position (topped it up 15 months before). Whenever it works, it was chilling, even at RED position and blower at #1 When AC was misbehaving, there is a slight change in the engine sound. I checked all the fluids, they are at their max. Instrument cluster not showing any alarms. We had a ~1700 kms of year end trip including GOA. This incident happened for last 600 kms or so(from my in-laws place and my native, so no party spoiler ). I came back to Bangalore from my native (400 kms) without AC and a slight different engine sound. When I stopped for the breakfast, I disconnected the -ve terminal. Also during hard-breaking, vehicle is shaking a bit, front discs making buzzzzzz sound. This week I'm giving my car for 5th service. It had run 33.5k KMS. I will be completing 5th year by March. Please suggest me what could have gone wrong here, and what-all I have to say to service guy. Definitely I will be asking for ECU re-flash. BTW - mine is 1.4 Dynamic 2010 model.