2012 V70 warning message

olgasgimp · Dec 2nd, 2015, 12:35

I have a Battery charging warning urgent service message on dash, through a meter on the battery this morning and have 12.5v and when started a drop to 11.2v I would normally assume alternator with those results but I find the warning message a little concerning, any other possibilities? before I change the alternator, no fuses relays etc that may be the cause. thank you in advance

Fakir · Dec 2nd, 2015, 16:36

What is the battery voltage when the engine is on idle?

olgasgimp · Dec 2nd, 2015, 19:42

11.2v as above

Fakir · Dec 2nd, 2015, 22:01

Oh, I see now. I thought you meant the cranking voltage, my bad. If there really is 11.2 V when the engine is running, then the alternator really seems dead.

This might look like a stupid question, but it's worth asking: is the alternator actually spinning? If the auxiliary belt has snapped (for example), the result would be the same. Although the power steering would be off too.

olgasgimp · Dec 3rd, 2015, 08:08

No belt is good, I know it shouldn't affect it but driving through a flood the other day might be the cause, will do some more testing this morning and see if it varies under load then order one if it fails.

CTCNetwork · Dec 9th, 2015, 17:24

Hi,

Got that one whilst in Germany. but it would show up, linger and then disappear. Then reappear. Sometime it would go of its own accord, other times it would need a shutdown and restart to be gone.

Voltage at the battery should be 12.5 odd to 14.5 odd for these "smart" alternators. If you are getting the warning then there is likely to be some component failure in the regulator or even the copper coil...

Best to get it changed. Maybe keep your alternator and get it refurb'd for "next time"...

Des. . .

Dec 2nd, 2015, 12:35	#1
olgasgimp New Member Last Online: Aug 6th, 2018 17:19 Join Date: Jan 2015 Location: cheshire/liverpool	2012 V70 warning message I have a Battery charging warning urgent service message on dash, through a meter on the battery this morning and have 12.5v and when started a drop to 11.2v I would normally assume alternator with those results but I find the warning message a little concerning, any other possibilities? before I change the alternator, no fuses relays etc that may be the cause. thank you in advance

Dec 9th, 2015, 17:24	#6
CTCNetwork Forum Support Team Join Date: Dec 2004 Location: Liège, Belgium View Photos By: CTCNetwork	Hi, Got that one whilst in Germany. but it would show up, linger and then disappear. Then reappear. Sometime it would go of its own accord, other times it would need a shutdown and restart to be gone. Voltage at the battery should be 12.5 odd to 14.5 odd for these "smart" alternators. If you are getting the warning then there is likely to be some component failure in the regulator or even the copper coil... Best to get it changed. Maybe keep your alternator and get it refurb'd for "next time"... Des. . . __________________ Density:- Not just a measurement ~ It's a whole way of Life.! ! ! I drive a Volvo, Please Don't Get In My Way! OldVolvos4Ever He shows up. People die. He vanishes. People should not be afraid of their governments. "He'll deliver more justice in a weekend than 10 years of your Governments should be afraid of their people... "V" courts & tribunals. Just stay out of his way." "I plan to."

Dec 2nd, 2015, 16:36	#2
Fakir New Member Last Online: Oct 25th, 2016 01:42 Join Date: Oct 2015 Location: Prague	What is the battery voltage when the engine is on idle?

Dec 2nd, 2015, 19:42	#3
olgasgimp New Member Last Online: Aug 6th, 2018 17:19 Join Date: Jan 2015 Location: cheshire/liverpool	11.2v as above

Dec 2nd, 2015, 22:01	#4
Fakir New Member Last Online: Oct 25th, 2016 01:42 Join Date: Oct 2015 Location: Prague	Oh, I see now. I thought you meant the cranking voltage, my bad. If there really is 11.2 V when the engine is running, then the alternator really seems dead. This might look like a stupid question, but it's worth asking: is the alternator actually spinning? If the auxiliary belt has snapped (for example), the result would be the same. Although the power steering would be off too.

Dec 3rd, 2015, 08:08	#5
olgasgimp New Member Last Online: Aug 6th, 2018 17:19 Join Date: Jan 2015 Location: cheshire/liverpool	No belt is good, I know it shouldn't affect it but driving through a flood the other day might be the cause, will do some more testing this morning and see if it varies under load then order one if it fails.

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