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Truck Computer Backup Batteries?


SuiteSuccess
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Suitesuccess.  I can't say for sure on the modern trucks but I do know that the 1997 Volvo with the Detroit s in them have a  battery in them that from what I was told, can't be replaced.  That came from a reliable friend and long time truck mechanic.  

We tried changing things on the computer but to no avail.  I ended up taking the truck to the specialist on these motors.  They couldn't fix it so they replaced it.  $3500.  Now I've got my cruise control back and it works great.

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no backup battery on d13 engine that i have found.  power is directly taken from the main battery via separate wire and fuse.  need to make sure that wire and connection is clean and well secured.  had to disconnect mine and reset / reboot all the computers and sensors.

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18 hours ago, rickeieio said:

So, would that apply to Carl's Volvo powered truck too?

And btw Tom, you might share some pics of your "hood" for us to drool over.

Thanks, Rick, but the stacks have water stains from a recent rain...don't want those kinds of pics ending up on the Interwebs.  ;)

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1 hour ago, adept99 said:

Ya know, that Tom feller tries to act like he fits in to the Southern lifestyle, but sometimes I wonder. Water stains on the stacks?? You gonna shine it or drive it?

 

😂😂

Heck Paul, if you're going to drive it you might as well look good doin' it.  Guilty as charged!

BTW, you set the example for me after I first met you and saw those fancee overalls you were sportin'.

Edited by spindrift
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Carl, there is no backup battery on your Volvo D12.  All necessary intelligence for operation of the truck is set in ROM - which, BTW, is re-programmable thru Volvo with cooperate approval and at a cost.  If you disconnect the truck batteries and power to the EECM you may find that it does not run exactly the same until the EECM has a chance to "learn" certain parameters from the various engine sensors.

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6 hours ago, RandyA said:

Carl, there is no backup battery on your Volvo D12.  All necessary intelligence for operation of the truck is set in ROM - which, BTW, is re-programmable thru Volvo with cooperate approval and at a cost.  If you disconnect the truck batteries and power to the EECM you may find that it does not run exactly the same until the EECM has a chance to "learn" certain parameters from the various engine sensors.

Thanks Randy and others. 

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  • 4 months later...
On 1/2/2020 at 11:02 AM, chief916 said:

Suitesuccess.  I can't say for sure on the modern trucks but I do know that the 1997 Volvo with the Detroit s in them have a  battery in them that from what I was told, can't be replaced.  That came from a reliable friend and long time truck mechanic.  

We tried changing things on the computer but to no avail.  I ended up taking the truck to the specialist on these motors.  They couldn't fix it so they replaced it.  $3500.  Now I've got my cruise control back and it works great.

I found this post from awhile back when my cruise started acting up.  If the battery in the ecm is going bad you will probably have to send the ecm out for repair.

Chief916

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