12v System Service Required?

tem · Jul 5th, 2018, 16:46

Got amber warning today, with battery symbol and “12v System Service Required”.
Does anyone have any idea what this means?

Thank you.

tem.

Bernard F · Jul 5th, 2018, 17:17

I had it, means battery low needs a charge or long run.

tem · Jul 5th, 2018, 17:30

Quote:

Originally Posted by Bernard F

I had it, means battery low needs a charge or long run.

Thanks.
I did wonder if the car needs a long run as I have not used it much lately.
Will try and get a few miles in tomorrow and see if that clears the amber warning.

tem.

KillieShez · Jul 6th, 2018, 16:58

I have had this warning for the last 2 weeks, the car went into the dealership last week who were saying that they had never seen this error on a Volvo before.

They had the car for a week called after 2 days to let me know that Volvo had been involved and that there were parts on there way to fix the issue, got a call 2 days later to say that the parts were out of stock and didn't know when they were due in so i picked the car back up with the fault still showing.

Got a call the next day to say the parts would we in on Thursday, took the car back in today, got a call in the afternoon to say the new parts and software updates have not fixed the problem so Volvo want to connect to the car to check the wiring.

I have only had the car for 4 weeks so this is very fustrating.

Tresco85 · Jul 6th, 2018, 17:56

We had this the day we picked the car up, had the demo of everything and went to drive off and noticed this on the display so went straight back in and it went in the workshop, they come out and said they didn't know what it was but take it for a run which we did and it then went and we have never seen it again in the last 6 months.

tem · Jul 6th, 2018, 18:08

Last night, I searched the latest online manual to try and find the warning “12v System Service required” and could not find any reference.

Going back to yesterday when the amber warning came on, I continued and drove approximately 16 miles.
Taking onboard what post #2 had to say, I checked the battery voltage before starting the car this morning: 12.18 volts.
On starting the car I found that the amber warning and message had cleared.
Drove approximately 25 miles with the AC off and after leaving the car for 20 minutes, checked the voltage again: 12.40 volts.

I can only assume, with this spell of warm weather and numerous short trips with AC working overtime, the battery was not charging properly. I do have the car booked in for next Friday for them to check the fault, but if all goes well, I may cancel the appointment early next week.

What baffled me, was the wording of the amber warning, as I would have expected something like “Battery Voltage Low”.

tem.

Bernard F · Jul 6th, 2018, 20:56

Further to my post #2 I did take the car into my garage and they investigated whilst I waited. Said battery only showed 68% charged and go for a long run as I had been doing a lot of short journeys. Did the long run and no message or problem since.

Crockers · Jul 6th, 2018, 22:04

In this hot weather turn off the stop start.

These car have so much electronic gizmos they could do with two batteries.

Even my TV remote has 2

Tresco85 · Jul 6th, 2018, 23:13

They do have 2 batteries, this is taken from the manual, Cars with the Start/Stop function are equipped with two 12 V batteries - one extra powerful starter battery for starting and one support bat- tery that helps during the Start/Stop function's starting sequence.

Jcbrown · Jul 7th, 2018, 05:16

Not quite the same, but had red "12V Battery Charging Fault. Stop Safely" a few months ago (see here)

Disconnecting battery (in boot) for a bit, reconnect it, and problem vanishes.

Car went in for regular service a week or two later and had a full CANbus s/w update, as there was a TJ on this issue

Jul 5th, 2018, 16:46	#1
tem Premier Member Last Online: Apr 9th, 2021 11:52 Join Date: Sep 2006 Location: Scottish Highlands	12v System Service Required? Got amber warning today, with battery symbol and “12v System Service Required”. Does anyone have any idea what this means? Thank you. tem. __________________ MY17 V90 D4 Momentum, Magic Blue, Amber, 12.3" Display, Winter Plus, Rear Camera, Privacy Glass.

Jul 6th, 2018, 18:08	#6
tem Premier Member Last Online: Apr 9th, 2021 11:52 Join Date: Sep 2006 Location: Scottish Highlands	Last night, I searched the latest online manual to try and find the warning “12v System Service required” and could not find any reference. Going back to yesterday when the amber warning came on, I continued and drove approximately 16 miles. Taking onboard what post #2 had to say, I checked the battery voltage before starting the car this morning: 12.18 volts. On starting the car I found that the amber warning and message had cleared. Drove approximately 25 miles with the AC off and after leaving the car for 20 minutes, checked the voltage again: 12.40 volts. I can only assume, with this spell of warm weather and numerous short trips with AC working overtime, the battery was not charging properly. I do have the car booked in for next Friday for them to check the fault, but if all goes well, I may cancel the appointment early next week. What baffled me, was the wording of the amber warning, as I would have expected something like “Battery Voltage Low”. tem. __________________ MY17 V90 D4 Momentum, Magic Blue, Amber, 12.3" Display, Winter Plus, Rear Camera, Privacy Glass. Last edited by tem; Jul 6th, 2018 at 18:32. Reason: Text.

Jul 6th, 2018, 20:56	#7
Bernard F Senior Member Last Online: Jul 14th, 2021 14:57 Join Date: Jul 2014 Location: Brentwood	Further to my post #2 I did take the car into my garage and they investigated whilst I waited. Said battery only showed 68% charged and go for a long run as I had been doing a lot of short journeys. Did the long run and no message or problem since. __________________ XC60 T5 MY18 Inscription Pro, Intellisafe Pro, Xenium, Keyless, Silver, Dark windows, Tempa spare wheel.

Jul 6th, 2018, 22:04	#8
Crockers Premier Member Last Online: Feb 22nd, 2024 06:49 Join Date: Jan 2012 Location: North Wilts	In this hot weather turn off the stop start. These car have so much electronic gizmos they could do with two batteries. Even my TV remote has 2 __________________ XC60 Inscription Pro T5. Mussel Blue with blonde. Xenium, intellisafe pro, towbar, 4 zone , polestar, body styling pack. Apple car play.Tinted windows NOW SOLD

Jul 7th, 2018, 05:16	#10
Jcbrown Senior Member Last Online: May 18th, 2019 18:53 Join Date: Jan 2017 Location: Leicester	Not quite the same, but had red "12V Battery Charging Fault. Stop Safely" a few months ago (see here) Disconnecting battery (in boot) for a bit, reconnect it, and problem vanishes. Car went in for regular service a week or two later and had a full CANbus s/w update, as there was a TJ on this issue __________________ S90 2017 D4 Inscription Osmium Grey, Winter Plus HUD, Xenium, Plus various options

Jul 5th, 2018, 17:17	#2
Bernard F Senior Member Last Online: Jul 14th, 2021 14:57 Join Date: Jul 2014 Location: Brentwood	I had it, means battery low needs a charge or long run. __________________ XC60 T5 MY18 Inscription Pro, Intellisafe Pro, Xenium, Keyless, Silver, Dark windows, Tempa spare wheel.

Jul 6th, 2018, 16:58	#4
KillieShez New Member Last Online: Jul 11th, 2018 18:31 Join Date: Jul 2018 Location: Kilmarnock	I have had this warning for the last 2 weeks, the car went into the dealership last week who were saying that they had never seen this error on a Volvo before. They had the car for a week called after 2 days to let me know that Volvo had been involved and that there were parts on there way to fix the issue, got a call 2 days later to say that the parts were out of stock and didn't know when they were due in so i picked the car back up with the fault still showing. Got a call the next day to say the parts would we in on Thursday, took the car back in today, got a call in the afternoon to say the new parts and software updates have not fixed the problem so Volvo want to connect to the car to check the wiring. I have only had the car for 4 weeks so this is very fustrating.

Jul 6th, 2018, 17:56	#5
Tresco85 Member Last Online: Yesterday 08:39 Join Date: Mar 2011 Location: Thatcham	We had this the day we picked the car up, had the demo of everything and went to drive off and noticed this on the display so went straight back in and it went in the workshop, they come out and said they didn't know what it was but take it for a run which we did and it then went and we have never seen it again in the last 6 months.

Jul 6th, 2018, 23:13	#9
Tresco85 Member Last Online: Yesterday 08:39 Join Date: Mar 2011 Location: Thatcham	They do have 2 batteries, this is taken from the manual, Cars with the Start/Stop function are equipped with two 12 V batteries - one extra powerful starter battery for starting and one support bat- tery that helps during the Start/Stop function's starting sequence.

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