9 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHBattery drain
Reported or suspected cause
changer or the head unit
Suggestion or failed attempt
No successful repair reported for this finding.
0
Identified cause
1
Suspected cause
0
Reported fixes
Read evidence and context
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 suspect a cause
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.
Suspected cause · Original poster
Thanks for the info, so it is probably the changer or the head unit.
Leading evidence: 'changer or the head unit' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is 'changer or the head unit' (1 discussions; 0 report identifying it and 1 suggest it). The most frequently discussed action is 'Use usb port' (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.
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
You can use it to play MP3 music files using the USB port, which should be similar quality to a CD.
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.
9 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Porsche Club GB: 1 discussions
0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.
0 acknowledgements have no verified action link; they do not establish a repair result.
Generation: 20261026T074343Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
[FONT=calibri"]I have taken my car to my OPC with a constant draining battery issue. The error codes they are getting on the diagnostic is that there is a power drain from the CD changer. Has anyone heard of this issue before?
Yes, I think this is common. If you have a current meter you can monitor the difference with radio fuse fitted / removed to be sure. Make sure you have the code to hand though (assuming 986/996).
We expect a normal value of current in ’locked mode‘ of 0.1-0.2A
Kind Regards Lee
Thanks for the info, so it is probably the changer or the head unit. So, what is the solution if that is the issue, new cd changer and/or head unit? A new cd changer from Porsche is £800!! I would look for an ebay one or a new head unit before I paid that I think.
I just looked at your old posts, and see you have a 2004 C4S.
I came across this device recently. You could ditch your CDC and get Bluetooth phone and USB connectivity.
http://www.ebay.co.uk/itm/Bluetooth-A2DP-USB-MP3-adapter-Porsche-911-Boxster-Cayman-Cayenne-PCM-2-0-2-1/112500849717?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m1438.l2649
Thanks for the feedback. Yes its a 2004 c4s with pcm and cdc changer. So that is another option there. The only downside being bluetooth is not as good quality as cd. Will have a think and look at reviews of the bluetooth connector.
Last drain on my 928 was the CD changer, just a little bit of chafed wire shorting out with enough current to flatten the battery in a week.
Cheap fix; once i'd found it!
