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#1 (permalink) Old 03-23-2012, 07:18 PM
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Question Multiple Warning Lights!

Need diagnostic help!

2006 Sedona LX

Parking Brake Light and Battery Light on dash came on together but intermittently three days ago. Drove about 5 miles.

Yesterday two more lights turned on, the ABS and ESC.
Now all 4 lights are on continuous. Drove 2 miles home and parked.

Attempted to start the van this morning and would turn but not start.

No CEL's

Will check battery voltage next.

Possible signs of bad alternator??
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#2 (permalink) Old 03-23-2012, 07:25 PM
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Could be a bad alternator, in which case the battery voltage would continue to drop as you drove. Low battery voltage can cause all kinds of funky things to happen.
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#3 (permalink) Old 03-23-2012, 08:40 PM
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Thanks!
Van started with assistance of a battery charger. Found the negative terminal was loose. Will charge the battery and test, then check output of alternator.
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#4 (permalink) Old 03-23-2012, 10:43 PM
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The loose battery terminal would cause a "drop in voltage" because of the poor connection. Multiple warning lights usually indicate bad battery connections or bad ground returns on KIAs. The car's computers ECM/BCM/TCM/ABS don't like low voltage and will loose their "minds" if subjected to it.
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#5 (permalink) Old 03-25-2012, 03:40 PM
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Battery charged, van started but volts slowly dropped from 12.2 to about 11.3 in 15 minutes of running engine. Should have seen a spike in voltage after vehicle was running?? Will try testing the alternator next.
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#6 (permalink) Old 03-25-2012, 04:14 PM
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Running voltage should be around 14-14.5V, and jump up to that as soon as the engine starts. Check all the connections to the alternator, including the fuse that is on the positive battery terminal, and that all the fasteners on the terminal are tight.
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#7 (permalink) Old 03-27-2012, 11:42 AM
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Checked all fuses and connections. Everything appears to be good. Battery voltage holds about 11.3 while engine is running. Must be a failing alternator. Have a re-manufactured on order. Will install and post result tomorrow. Thanks for the tips!
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#8 (permalink) Old 03-28-2012, 06:19 PM
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Refurbed alternator installed. Volts while running back at 14.4v. All warning lights off. About 2 hours of work and $120 part. Lowest quote from mechanic was $420 installed. Nice to save a few dollars DIY.
Thanks for all replies!
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