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98 Seville STS
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Discussion Starter #1
Hi to everybody!
Recently I bought o 98 STS, and everything were ok till today. I got into a car, load CD's to changer and a tape (never did it before) and listen to music. After few minutes i tried to start the car but it didn't :/ DIC said 9,8 Volts on battery, so i made a jump. Volts got at 11,8 level but it didn't start either. After few hours i tried to start again but now completely nothing happen. No lights on dash, no nothing. What could be the problem? Does the sound system take so much power to play?
 

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'98 STS (RIP @ 206,xxx miles)
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4,854 Posts
....and listen to music. After few minutes i tried to start the car but it didn't :/ DIC said 9,8 Volts on battery....
A battery showing 9.8 Volts is toast.

You can verify this by removing the battery, giving it an overnight charge at something like a 15 to 20 Ampere rate and then take the battery to a parts store and have them do a (free) load test.

Voltage readings provide clues but do not tell the whole story.

One side affect of system Voltage that low is when you finally buy and install a fresh battery, there will any number of (false and misleading) Diagnostic Trouble Codes set.
....Does the sound system take so much power to play?
Yes.

Plus all the other modules that are powered up.
 

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98 Seville STS
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3 Posts
Discussion Starter #3
thanks for reply
can i easily remove battery? i mean: will computer reset when battery is out? or do i have to switch car to some kind of service mode? maybe someone will describe how to remove battery step by step?
 

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'98 STS (RIP @ 206,xxx miles)
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4,854 Posts
thanks for reply
can i easily remove battery? i mean: will computer reset when battery is out? or do i have to switch car to some kind of service mode? maybe someone will describe how to remove battery step by step?
If you require step by step instructions on battery removal, I urge you to pay someone to look into the situation for you (hire it done).

Your battery is located under the rear seat bottom cushoin.
 

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97 ETC x2, 04 GXP, 04 STS x2, 97 ESC, 99 Deville, 05 SRX
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2,603 Posts
No alternate/backup power source required. Disconnect the two cables, unbolt the hold-down, disconnect the vent tubes, and pull. Red on red, black on black. That's + (positive) on + and - (negative) on -. Never mix these cables up or you're in for a lot of fun electrical work, possibly a new car, and maybe some serious pain.
 
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