16 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHLosing power. Battery generator Light
Leading reported evidence
Use on a 2004 mercedes ml350
Performed · outcome unconfirmed
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
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 performed work without a confirmed outcome
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.
Performed · outcome unconfirmed
The alternator is the same as one used on a 2004 Mercedes ML350.
Leading evidence: 'Use on a 2004 mercedes ml350' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is 'brushes have worn out' (1 discussions; 0 report identifying it and 1 suggest it). The most frequently discussed action is 'Repair there is a thread' (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 suspect a cause
1
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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
If you do a search for alternator or regulator repair there is a thread that has part numbers for the Bosch regulator and alternator.
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.
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.
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.
0 acknowledgements have no verified action link; they do not establish a repair result.
Generation: 20261027T044418Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
My car is losing power, followed by the battery/generator light, followed by PSM warning light, brake warning lights, ABS lights, air bag, etc.
Restarts after battery charge with no warning lights, however battery voltage drops, warning lights start popping up and I lose power until the engine dies.
There is NO low battery warning light on.
Presumed alternator, but as no battery light, wondering if its the voltage regulator?
Is there a way to troubleshoot to deduce battery vs. alternator vs. voltage regulator?
Thanks,
--H
Reading through some threads here, 6speed and pelican, it seems the same symptoms crop up for a defective voltage regulator - any way to tell if its the alternator OR just the voltage regulator?
Its attached, and apparently is a cheap, easy DIY. I read a few posts experiencing similar symptoms with a bad regulator and therefore thought it worth asking the question..
It is likely the brushes have worn out. The brushes are part of the regulator. The regulator is mounted on the back of the alternator. It is very easy to change the regulator. It's more of a pain to pull the alternator than it is to replace the regulator. If you do a search for alternator or regulator repair there is a thread that has part numbers for the Bosch regulator and alternator. The alternator is the same as one used on a 2004 Mercedes ML350.
see this thread on Renntech.org
http://www.renntech.org/forums/topic...or#entry223820
Search doesn't work for me today, there are similar threads on this site.
Cheapest/fastest troubleshooting to do: remove battery, take it to your local auto parts store and have it LOAD-TESTED. If it passes, battery is NOT your problem. If it does not, buy a new battery and problem solved. Best of luck.
Picked up a replacement next day. Aftermarket from pepboys, cheap but lifetime warranty. Spent Saturday installing with my son. Had a few challenges getting the old one out, and broke a plastic part connecting the coolant lines, but all is complete, rock solid 14+ volts and car runs great again. Thanks for help chaps!
