Unhooking battery for vacation.
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Joined: Jun 2008
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From: Louisville Kentucky
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Safety Car
Joined: Nov 2009
Posts: 3,973
Likes: 341
From: Adelaide South Australia
if you don't unhook your battery you might need a new one after 3 months sitting. Depends how much drain your car normally has, which is a typical C4 problem.
The only thing battery disconnection affects is the block learning mode, which is a short term tuning thing.
As soon as you go driving down the road (after warming up the car) for 15 minutes or more the BLM will back at it again.
The worst thing to contend with is re-tuning the radio channels.
Its a choice, risk the battery or put up with a short time tuning re learn when you drive the car again.
The only thing battery disconnection affects is the block learning mode, which is a short term tuning thing.
As soon as you go driving down the road (after warming up the car) for 15 minutes or more the BLM will back at it again.
The worst thing to contend with is re-tuning the radio channels.
Its a choice, risk the battery or put up with a short time tuning re learn when you drive the car again.
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Le Mans Master
Joined: Jul 2004
Posts: 6,228
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From: Clifton Park, NY ............Clearwater, FL ... 85 Original Owner
if you don't unhook your battery you might need a new one after 3 months sitting. Depends how much drain your car normally has, which is a typical C4 problem.
The only thing battery disconnection affects is the block learning mode, which is a short term tuning thing.
As soon as you go driving down the road (after warming up the car) for 15 minutes or more the BLM will back at it again.
The worst thing to contend with is re-tuning the radio channels.
Its a choice, risk the battery or put up with a short time tuning re learn when you drive the car again.
The only thing battery disconnection affects is the block learning mode, which is a short term tuning thing.
As soon as you go driving down the road (after warming up the car) for 15 minutes or more the BLM will back at it again.
The worst thing to contend with is re-tuning the radio channels.
Its a choice, risk the battery or put up with a short time tuning re learn when you drive the car again.
Totally BS!
Safety Car
Joined: Nov 2009
Posts: 3,973
Likes: 341
From: Adelaide South Australia
how stupid am I answering a Noob first question !
"if I disconnect my battery for 3 months will it harm my computer ?"
short answer - No ! Source; 35 years of people disconnecting their batteries on C4's with no ill effects on the computer.
Then you want to take me to task for suggesting leaving the car for 3 months might run the battery down ?
Again my source; 5,437,698 posts entitled "my C4 battery keeps going flat when I leave it for a while !!!"
If the OP wanted advice in relation to a battery tender then they should have just said that.
"if I disconnect my battery for 3 months will it harm my computer ?"
short answer - No ! Source; 35 years of people disconnecting their batteries on C4's with no ill effects on the computer.
Then you want to take me to task for suggesting leaving the car for 3 months might run the battery down ?
Again my source; 5,437,698 posts entitled "my C4 battery keeps going flat when I leave it for a while !!!"
If the OP wanted advice in relation to a battery tender then they should have just said that.
Last edited by blackozvet; Jul 21, 2022 at 04:44 AM. Reason: change