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What did you do to your jimny today?

Roger Fairclough
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29 Nov 2021 16:06 #240393 by Roger Fairclough

Replied by Roger Fairclough on topic Re:What did you do to your jimny today?

I would normally maintain battery voltage to the car by use of suitable leads from the new battery.

Wouldn't this keep the ECU happy?

Roger

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Scimike
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29 Nov 2021 18:27 #240396 by Scimike

Replied by Scimike on topic Re:What did you do to your jimny today?

The ECU's not unhappy as such, it just remembers ( leads or not) that your old battery has had X many start / stop cycles and is X years old. It uses this information, along with capacity information etc, to calculate how much charge to push into the battery. That's part of a "smart" alternator function, but is usually specific to start / stop tech. So when you change your battery you should tell the ECU it's new and reconfirm the capacity information etc, it then treats it like what it is, a new battery. I guess you don't need to do this, but you will not be charging at optimal performance and it then defeats the smart function. Long term it could reduce battery life or leave you stranded during a start / stop cycle.
You need to check if your Audi has a need for this, but it appears to be normal now for modern BMW/VW/Audi.

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Roger Fairclough
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30 Nov 2021 14:26 #240411 by Roger Fairclough

Replied by Roger Fairclough on topic Re:What did you do to your jimny today?

Cheers Scimike, info much appreciated. I will be doing more research in the event battery does show signs of dying.

Roger

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Reason2doubt
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02 Dec 2021 21:35 #240451 by Reason2doubt

Replied by Reason2doubt on topic What did you do to your jimny today?

Sorting out the passenger front wing. I don't have arch liners anymore, so giving it a scrub back to inspect. Lucky I did as the shock mount was cracked (the driver side blew out last year on the way to Italy on our road trip). Welded a washer in for the time being to strengthen it up.

Tomorrow I will scrub it up a bit more and rust-encapsulate and then paint with buzzweld products.