Another dash message.

spudd · Oct 13th, 2018, 15:46

Today my little triangle lights up red and get the message power service required. the battery icon was also lit up. multi meter across battery terminals 12.6 volts start car and goes up to 14volt so I assume alternator is ok battery is 6 months old.
Any ideas please.

VOLVOBOY · Oct 14th, 2018, 12:14

Hi.
I had the same thing sometime back.
It was the alternator brushes . Although the service wear limit is 8mm - 10mm
approx. (if I remember right) mine measured 12mm and 15mm. Yet the car ran fine and the battery charged I kept having that warning.
So, rather than spend on a new alternator I purchased new slip-rings and regulator/rectifier pack.

Willow place · Oct 14th, 2018, 17:21

Can't the brushes be replaced like other alternators ?

oragex · Oct 14th, 2018, 17:40

How many miles on the car? Did the light came on intermittently ? Also look for corrosion and cracked power cables.

The brushes are inside the regulator, so the regulator can be replaced (don't use chinese ones). Careful when ordering, about 2005 and up have a different regulator. Some aftermarket ones came with awful female torx screws but most have standard philips screws only these get stuck in there so easy to round - put force and go very slowly with the screw driver.

spudd · Oct 16th, 2018, 06:44

Cheers all. light came on stayed on even when switched off and on. parked up couple of hours and it had gone all seems ok but will check live and earth wires for corrosion.

Oct 13th, 2018, 15:46	#1
spudd Master Member Last Online: Today 18:51 Join Date: Jan 2016 Location: LEICESTERSHIRE	Another dash message. Today my little triangle lights up red and get the message power service required. the battery icon was also lit up. multi meter across battery terminals 12.6 volts start car and goes up to 14volt so I assume alternator is ok battery is 6 months old. Any ideas please. __________________ XC 90 SE LUX 2014.

Oct 14th, 2018, 17:40	#4
oragex Premier Member Last Online: Jul 26th, 2021 21:24 Join Date: Jun 2013 Location: Coldnada	How many miles on the car? Did the light came on intermittently ? Also look for corrosion and cracked power cables. The brushes are inside the regulator, so the regulator can be replaced (don't use chinese ones). Careful when ordering, about 2005 and up have a different regulator. Some aftermarket ones came with awful female torx screws but most have standard philips screws only these get stuck in there so easy to round - put force and go very slowly with the screw driver. __________________ Several Volvo Repair Videos https://www.youtube.com/playlist?lis...ECTts0FSVSOT_c

Oct 16th, 2018, 06:44	#5
spudd Master Member Last Online: Today 18:51 Join Date: Jan 2016 Location: LEICESTERSHIRE	Cheers all. light came on stayed on even when switched off and on. parked up couple of hours and it had gone all seems ok but will check live and earth wires for corrosion. __________________ XC 90 SE LUX 2014.

Oct 14th, 2018, 12:14	#2
VOLVOBOY Lazy Member Last Online: Today 10:50 Join Date: Mar 2007 Location: HORLEY	Hi. I had the same thing sometime back. It was the alternator brushes . Although the service wear limit is 8mm - 10mm approx. (if I remember right) mine measured 12mm and 15mm. Yet the car ran fine and the battery charged I kept having that warning. So, rather than spend on a new alternator I purchased new slip-rings and regulator/rectifier pack.

Oct 14th, 2018, 17:21	#3
Willow place Senior Member Last Online: Jan 1st, 2023 17:41 Join Date: May 2017 Location: Los Finos Almeria	Can't the brushes be replaced like other alternators ?

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