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deville 93
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5 Posts
Discussion Starter #1
2005 sedan deville is running down the battery when parked for a few days.....how do i test for and find and repair the drain?
 

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Master of the Dark Art of Diagnostics
2003 DHS - two-2002 DHS, 2003 SLS, 1995 Sedan DeVille, 1989 Coupe DeVille
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19,254 Posts
as ALWAYS - that depends on your knowledge - skill level - tools - work space - ETC -
-----------------------

STEP #1 - ALWAYS - check for DTC's - Diagnostic Trouble Codes -
if you don't know how - go here -

post any codes you have -
ALONG WITH THEIR DEFINITIONS -

include whether they are C-Current or H-History -

for code definitions - go here -


here is a how-to video -

----------------------------

STEP 2 -
have the battery LOAD TESTED - this MIGHT save you a LOT of time and headaches -
regardless of age - the battery COULD be draining itself -

IF no codes - and the battery tests GOOD -

a "simple" method of tracking down LIVE/ACTIVE circuits would be:
EVERYTHING turned OFF -
trans in PARK - ignition in the LOCKED position - key removed -
twilight sentinel OFF -
headlights and interior lights OFF -
remove the back seat -
disconnect the positive battery cable -
pull ALL of the fuses out -
connect a test light between the battery and battery cable -
close ALL of the doors -
install the fuses - one at a time -

when the test light illuminates -
you found a LIVE/ACTIVE circuit -
 

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189 Posts
First thing is to check and make sure the battery is grounded correctly. Then get battery tested
 

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Registered
2001 eldorado,2008 DTS,2005 XLR, '96 eldo,'95 eldo,' 89 eldo,'78 eldo,'11CTS-V
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1,714 Posts
Why test the battery ground?...in this case.
 

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189 Posts
Sorry, but when there is no current flow that also means no charging is being done and when using the car you drain the battery, then when you get to low from no flow the car will not start. Which causes a dead battery? Oh well I guess that does not happen!!!
 

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Master of the Dark Art of Diagnostics
2003 DHS - two-2002 DHS, 2003 SLS, 1995 Sedan DeVille, 1989 Coupe DeVille
Joined
·
19,254 Posts
Sorry, but when there is no current flow that also means no charging is being done and when using the car you drain the battery, then when you get to low from no flow the car will not start. Which causes a dead battery? Oh well I guess that does not happen!!!
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Sorry, but when there is no current flow that also means no charging is being done
and when using the car you drain the battery

SO - if the ground was bad -
and there is no current flow -
HOW are you going to "use" the car?
 

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2000 Deville base 2019 Corvette Gran Sport
Joined
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998 Posts
as ALWAYS - that depends on your knowledge - skill level - tools - work space - ETC -
-----------------------

STEP #1 - ALWAYS - check for DTC's - Diagnostic Trouble Codes -
if you don't know how - go here -

post any codes you have -
ALONG WITH THEIR DEFINITIONS -

include whether they are C-Current or H-History -

for code definitions - go here -


here is a how-to video -

----------------------------

STEP 2 -
have the battery LOAD TESTED - this MIGHT save you a LOT of time and headaches -
regardless of age - the battery COULD be draining itself -

IF no codes - and the battery tests GOOD -

a "simple" method of tracking down LIVE/ACTIVE circuits would be:
EVERYTHING turned OFF -
trans in PARK - ignition in the LOCKED position - key removed -
twilight sentinel OFF -
headlights and interior lights OFF -
remove the back seat -
disconnect the positive battery cable -
pull ALL of the fuses out -
connect a test light between the battery and battery cable -
close ALL of the doors -
install the fuses - one at a time -

when the test light illuminates -
you found a LIVE/ACTIVE circuit -
That sounds backwards to me. Leave all the fuses in and pull one at a time until the light goes out. Possibly a lot shorter time and you don't have fuses all over the place.
 

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Master of the Dark Art of Diagnostics
2003 DHS - two-2002 DHS, 2003 SLS, 1995 Sedan DeVille, 1989 Coupe DeVille
Joined
·
19,254 Posts
That sounds backwards to me. Leave all the fuses in and pull one at a time until the light goes out. Possibly a lot shorter time and you don't have fuses all over the place.
======================
what if there are TWO circuits with constant power?

unless you pull BOTH - at the same time - the test light will remain ON -
 

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Registered
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189 Posts
======================
Sorry, but when there is no current flow that also means no charging is being done
and when using the car you drain the battery

SO - if the ground was bad -
and there is no current flow -
HOW are you going to "use" the car?
If the ground is bad or loose it may be working sometimes when it connects and then the car will start sometimes. It does not matter what I say lets just say that you are right and everyone else is to believe what you want them to believe. You are not worth the argument. There are people like you in all the forums. Just love to argue because they know it all. Do not worry I will not respond again since you know it all.
 

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Master of the Dark Art of Diagnostics
2003 DHS - two-2002 DHS, 2003 SLS, 1995 Sedan DeVille, 1989 Coupe DeVille
Joined
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19,254 Posts
If the ground is bad or loose it may be working sometimes when it connects and then the car will start sometimes. It does not matter what I say lets just say that you are right and everyone else is to believe what you want them to believe. You are not worth the argument. There are people like you in all the forums. Just love to argue because they know it all. Do not worry I will not respond again since you know it all.
================================

to be helpful - you must READ and UNDERSTAND the issue at hand -
go back and READ the initial post -

2005 sedan deville is running down the battery when parked for a few days
to me - this indicates a continuous draw when NOT in use - rather than a charging problem -

-----------------------------
YOU seem to have an issue with my responses -
rather than hanging on every word I write --
I invite you to include me in your IGNORE list -
that way you won't be intimidated by my responses -
have a nice life -
 

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Super Moderator
2003 Deville Base
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4,792 Posts
Gentlemen, let's focus on solving the problem and not who is right or wrong.

dbldpr, where it comes to experience on older Devilles might be wise to listen to Bass and hear him out.
 

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Super Moderator
2003 Deville Base
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4,792 Posts
Interestingly, the OP hasn't logged on since he made that first post.
 

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Registered
96 FWB
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353 Posts
From his related thread to this he said he's leaving the building, and he's proven a man of his word. Reading skills need work, but an honest sort nonetheless.

[EDIT] All too-gentle flik on the ear below accepted. Correct, not the OP. The MVP instead (Most Voiceful....) ;)
 

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Registered
2001 eldorado,2008 DTS,2005 XLR, '96 eldo,'95 eldo,' 89 eldo,'78 eldo,'11CTS-V
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1,714 Posts
I'm not sure if he's the OP.
I need a scorecard to keep track!
 

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1993 sedan deville
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30 Posts
I've had the experience of a bad terminal connection. though the car would start it's connections were to poor to recharge the battery. The high draw of starting made only a temporary connection . And while driving at night the lights grew dimmer and the car shut down. That was a long time ago.
Now on my older 93 Caddie I have had to disconnect while put away for the winter because the leveling system is still active even when not in use. It has leaks of course. Is it possible the 05 has such active systems that have leaks.
 

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Master of the Dark Art of Diagnostics
2003 DHS - two-2002 DHS, 2003 SLS, 1995 Sedan DeVille, 1989 Coupe DeVille
Joined
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19,254 Posts
I've had the experience of a bad terminal connection. though the car would start it's connections were to poor to recharge the battery. The high draw of starting made only a temporary connection . And while driving at night the lights grew dimmer and the car shut down. That was a long time ago.
Now on my older 93 Caddie I have had to disconnect while put away for the winter because the leveling system is still active even when not in use. It has leaks of course. Is it possible the 05 has such active systems that have leaks.
====================
because the leveling system is still active even when not in use.
good thought - but - starting with the 1994 model year -
the ELC system is only powered when the ignition is ON -
 

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Administrator
2002.5 F55 CORSA STS, 2014 Explorer XLT FWD
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68,423 Posts
Yes, the Devilles, "DTS", Eldorados, Sevilles, and many other models have rear ELC - Electronic Level Control - but as posted, the system is IGN dependent on the 1994 and later cars.

If the system is tight the car stays level forever, garaged or running. If the rear sags over time there's a leak somewhere. If the compressor runs once or twice during a long drive there's cause for some diagnosis. If it cycles regularly you have problems that should be diagnosed and repaired yesterday.
 
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