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YOUR RESEARCHBattery drain or some other electrical issue (radio doesn't work)?
Leading reported evidence
Check fuse and it looks fine
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Battery drain or some other electrical issue (radio doesn't work)?
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Leading evidence: 'Check fuse and it looks fine' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check fuse and it looks fine' (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.
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Replace battery, i noticed the radio would no longer power
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Suggestion · Original poster
Also, after I replaced the battery, I noticed the radio would no longer power on.
Battery drain or some other electrical issue (radio doesn't work)?
Test battery and it is really dead
Suggestion or failed attempt
No successful repair reported for this finding.
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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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Suggestion
If you have tested the battery and it is really dead...
Battery drain or some other electrical issue (radio doesn't work)?
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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.
11 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
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1 acknowledgements have no verified action link; they do not establish a repair result.
Outcome without a verified action link
I won't be able to troubleshoot for a couple of weeks, but I will report back when I get this resolved.
I have an 03 996, recently the 2nd battery died and I replaced it with an Optima.
Now, one week later, the battery is dead again and the car won't start. The entire time, the car has been hooked up to an OEM battery conditioner.
Also, after I replaced the battery, I noticed the radio would no longer power on. I checked the fuse and it looks fine.
Any ideas on what could be draining the battery so quickly, or perhaps the OEM battery conditioner has gone bad?
The battery prior to the Optima did not last very long either (hard to tell how long since the car is driven infrequently) so I am inclined to think there is a slow drain somewhere.
If you have tested the battery and it is really dead...
You need to put an amp meter in series with the battery. Max draw with everything off should be around 40-60 ma.
Start pulling fuses one at a time until you find the circuit that has the heavy drain.
Once you have found the circuit you can narrow it down to the probable cause.
I do leave the key in the ignition generally, but I did this with the last two batteries and they didn't drain so quickly.
The Optima isn't totally dead, interior lights still come on, the car just won't crank...
I will search about the ignition switch as I have heard this is a common issue.
Any advice on the fact that the radio won't even power on, perhaps this is relevant?
The car is an 03 with 4k miles.
thanks, I didn't think of that...
As far as the no start issue so soon, I guess I will see if the car continues to get power for everything else and I just have a no start issue...if so I would assume it's the ignition switch.
I won't be able to troubleshoot for a couple of weeks, but I will report back when I get this resolved.
Thanks for all the responses!
Re: the "key in the ignition" problem:
I've experienced it on my C4, the previous owner experienced it, and a buddy with an '07 Cayman had the same problem. Dealer told him that you can't leave it in there or it will drain the battery.
I've never heard anyone else mention this, though, and thought it sounded crazy until it happened to me. YMMV.
I had heard this too, but even the whole week after I installed the new battery, the battery maintainer was plugged into the cigarette lighter...I would think that would keep things fine.
