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Car shuts off, had to enter radio code

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Old Nov 10th, 2021, 23:42   #1
Tom Sawyer
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Default Car shuts off, had to enter radio code

Greetings
RE 2001 S-40 150k on the clock

I was stopped at a traffic light and the car shuts off. Started right back up - but had to enter the Radio Code.

Question: What wires could be loose or corroded that would require the radio code to be entered.
** Battery Cables
** Battery to ??? cable connection.

FWIW I replaced the entire ignition wiring harness. The battery is brand new.

Many thanks,

T in Carolina
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Old Nov 12th, 2021, 16:59   #2
gatos
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Check if the batter terminals are clean and the clamps are tightened. Also check the blue thick ground wire that is bolt on the chassis of the car kind of below the battery and slightly towards the engine. It can some time corrode and cause earth issues
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Old Nov 12th, 2021, 17:55   #3
Tom Sawyer
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Default Re Engine Shutoff

Yo Gatos - I hope all is well on your side of the pond !

Your answer is exactly what I was looking for =
the other battery connections that may cause this issue.

The terminals are clean as part of new battery install.
... didn't know about the blue wire to the chassis
I'll check that soon

My daughter just had another baby - boy - now we have five grands -
but they are 8 hours away, ten if my wife drives.

Take care and stay well.

Tom
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Old Nov 12th, 2021, 22:09   #4
Clan
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Quote:
Originally Posted by Tom Sawyer View Post
Greetings
RE 2001 S-40 150k on the clock

I was stopped at a traffic light and the car shuts off. Started right back up - but had to enter the Radio Code.

Question: What wires could be loose or corroded that would require the radio code to be entered.
** Battery Cables
** Battery to ??? cable connection.

FWIW I replaced the entire ignition wiring harness. The battery is brand new.

Many thanks,



T in Carolina


The wiring can corrode in the loom under the radiator and half way up both sides. cut off the black sheath and examine each wire for bulges or imperfections which would indicate the copper has turned to white dust .
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Old Jan 15th, 2022, 23:02   #5
Tom Sawyer
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Default S-40 shutting off at idle

Drum Roll ... The answer was severely "corroded" positive battery cable.
The part that connects to the terminal was extremely thin and totally eaten up at the bottom.

Changed it out with Genuine Volvo and the car starts with a roar !
My good guy mechanic charged me $90 for labor, which I was happy with.

Thanks to all who replied.

T in Carolina
Attached Images
File Type: jpg Battery Cable - positive 011222.jpg (60.4 KB, 10 views)
File Type: jpg Battery Cable - positive 011222b.jpg (77.8 KB, 9 views)
File Type: jpg Battery Cable - positive 011222c.jpg (105.5 KB, 9 views)
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Last edited by Tom Sawyer; Jan 15th, 2022 at 23:04. Reason: added pic
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