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2003 C4S Battery Drain

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6 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCH2003 C4S Battery Drain

Leading reported evidence

Check 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: 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
Thanks for the alternator tip, I will check that out as well by isolating while checking for draw.
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2003 C4S Battery Drain

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Leading evidence: 'Check draw' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check draw' (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.

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1 matching discussions · 6 captured posts examined · 0 partial discussions

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Test fuses already (alternator is not fused)

Suggestion or failed attempt

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
Could be bad diodes in the alternator drawing current if you tested all the fuses already (alternator is not fused).
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2003 C4S Battery Drain

Frequently discussed actions (2)

These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.

Check draw

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
Thanks for the alternator tip, I will check that out as well by isolating while checking for draw.
Original post Read captured discussion
2003 C4S Battery Drain

Test fuses already (alternator is not fused)

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
Could be bad diodes in the alternator drawing current if you tested all the fuses already (alternator is not fused).
Original post Read captured discussion
2003 C4S Battery Drain

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.

6 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.

0 acknowledgements have no verified action link; they do not establish a repair result.

Generation: 20261027T000231Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

I am trying to identify a draw that kills my battery withing about 5 days. No visible items staying on, confirmed frunk & glove box lights are off, interior lights off and no accessory items are on New Battery and good charging system, vehicle locked when parked. I will do the draw test this weekend but I was wondering if there is a known cause.

POST 2Original post

Any aftermarket electronics, phone chargers, etc connected? It seems like you are looking at ~0.5A draw. Do you have a DC amp clamp? Could be bad diodes in the alternator drawing current if you tested all the fuses already (alternator is not fused).

POST 3Original post

DC amp clamps are quite affordable these days btw Andoer UNI-T UT210E True RMS AC/DC Current Mini Clamp Meters w/ Capacitance Tester - - Amazon.com Andoer UNI-T UT210E True RMS AC/DC Current Mini Clamp Meters w/ Capacitance Tester - - Amazon.com

POST 4 / ORIGINAL POSTEROriginal post

ipod adapter and radar detector removed already. good tip on the amp clamp, I will pick one up so when i get started I have the right tool. Thanks for the alternator tip, I will check that out as well by isolating while checking for draw.

POST 5Original post

There's a fat cable (actually multiple cables in series) from the battery leading to the engine compartment "+" jump point. Put the amp clamp around that cable and you will see the draw from the alternator, if any.

POST 6Original post

Suggest you search for recent thread which identified problems with the "Y connector".

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