16 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHBattery drain - what's this noise? - problem solved
Reported or suspected cause
alarm horn making a faint
Reported cause
No successful repair reported for this finding.
1
Identified cause
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Suspected cause
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Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
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Reported cause · Original poster
Problem solved: it was the alarm horn making a faint, but continuous noise.
Battery drain - what's this noise? - problem solved
Frequently discussed work
Run /operating while the car is off
No successful repair reported for this finding.
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Unsuccessful attempts
1
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Discussions that contain suggestions
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Suggestion · Original poster
In my quiet garage, if I put my ear up to the driver's side windshield wiper, I can hear a faint buzzing sound as if something is running/operating while the car is off.
Battery drain - what's this noise? - problem solved
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Leading evidence: 'alarm horn making a faint' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'alarm horn making a faint' (1 discussions; 1 report identifying it and 0 suggest it). The most frequently discussed action is 'Run /operating while the car is off' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
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Battery drain - what's this noise? - problem solved
Run /operating while the car is off
Suggestion or failed attempt
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
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Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion · Original poster
In my quiet garage, if I put my ear up to the driver's side windshield wiper, I can hear a faint buzzing sound as if something is running/operating while the car is off.
Battery drain - what's this noise? - problem solved
Test current draw
Suggestion or failed attempt
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
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Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
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0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
I used this clamp meter on the battery cable to test current draw
Battery drain - what's this noise? - problem solved
Use fogs at the same time, and i think
Suggestion or failed attempt
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Reported fixes
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Unsuccessful attempts
1
Discussions
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Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
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0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
I regularly use my fogs at the same time, and I think that they are aftermarket bulbs- they seem much brighter than 55 watts.
Battery drain - what's this noise? - problem solved
Frequently discussed actions (4)
These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.
Run /operating while the car is off
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion · Original poster
In my quiet garage, if I put my ear up to the driver's side windshield wiper, I can hear a faint buzzing sound as if something is running/operating while the car is off.
Battery drain - what's this noise? - problem solved
Coverage and how to read this overview
Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.
16 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.
2 acknowledgements have no verified action link; they do not establish a repair result.
There is a faint noise coming from near the drivers side windshield wiper under the hood. In my quiet garage, if I put my ear up to the driver's side windshield wiper, I can hear a faint buzzing sound as if something is running/operating while the car is off.
This is continuous even after the car sits for over a day. The key is not in the ignition and the car is not locked.
I believe this noise is causing my battery drain. It's a 4 month old battery, but after 2-4 days of sitting in my cold garage the battery doesn't turn the motor over nearly as fast, plus the voltage has decreased to just below 12v.
I don't think it's a faulty battery due to the buzzing sound - what is this sound?
These cars draw a lot of power. It doesn't take much to tip the balance and drain the battery. My car is supposedly the biggest power pig of them all: C4 cab, tip, nav, litronics, heated seats, etc... Even with a new battery and alternator, I watch my power consumption. My nav never really shuts off unless I lock the car. I am going to upsize to the biggest battery (CCAs) that I can fit in there when this one dies.
With everything on at once, my voltmeter hovers just above 12.1 volts... not much margin for error. The biggest draws are the heated seats, no surprise there, rear defogger on the hardtop and the litronics. With the engine running and warmed up, I am at 14V.
I have also heard that the 996 is infamous for not going to sleep after you shut off the engine. Many systems stay active until you activate the alarm and lock the doors...I would definitely lock the car even in your garage. Don't forget to leave a window open in case the battery fails! LOL
I had forgotten that the litronics are so low. I regularly use my fogs at the same time, and I think that they are aftermarket bulbs- they seem much brighter than 55 watts.
Problem solved: it was the alarm horn making a faint, but continuous noise. Not sure if that is the actual cause of the battery drain...time will tell.
James, my car has the exact same noise but it goes away in a few hrs after the car is stopped and left unlocked.
I used this clamp meter on the battery cable to test current draw
http://www.thetoolwarehouse.net/p-11...lties-685.aspx
With the car parked, not locked, all doors closed, front trunk light removed but with the lid open, there is ~5A draw for a few minutes, then it stays at ~300mA for the next 3 hrs and then it goes to ~0.
Glad to hear that you got it sorted out. I noticed today that power indicators on the computer of my nav system stay illuminated until I activate the alarm. I have the PCM1 and I am wondering how much it draws if I don't start the alarm. Time to grab a meter and check.
I was told by my mechanic to always lock and arm the car because otherwise it will drain the battery because it is still on like standby mode until locked/armed.
+1 A clamp meter is an excellent tool for finding the unwanted draw. I like the Extech that has 1mA resolution. FYI 300mA seems high...my car is around 40mA after 15-20 minutes
http://www.sears.com/shc/s/p_10153_1...u=03499977000P
That's good to know. I always thought my 300mA is on the high side too for 3hrs. So your car goes to 40mA after 15-20 minutes with the doors locked or not locked?
I verified for someone on the GT3 forum. Take a look over there. I tested both locked and unlocked.
https://rennlist.com/forums/996-gt2-...n-2004gt3.html
When you say problem solved, did you actually solve the problem, or just identify it? What did you do to get the humming to go away?
I just noticed this with my new 996, and was wondering if there was an actual fix for this (or if there was even a problem in the first place).
This is a source reference. Confirm exact model applicability in the original material.
