Xc90 2004 ABS operating randomly

Bagnall · Nov 29th, 2021, 16:31

Hi

Xc90 2004 engine code D5244T

I’ve been driving around as normal the past few days, and it feels like the ABS keeps operating when braking. In normal driving conditions, when it isn’t necessary.

It doesn’t do it all the time, but it’s becoming pretty consistent and it happens now on every drive I take.

Has anyone had a similar problem? I’m assuming it’s the ABS, could it be anything else which would vibrate the brakes under braking.

Both wheel bearings have been changed recently, and one abs ring. No faults after fitting for a few months.

I’m thinking possible wheel sensor fault, but no fault codes are reading on the ECU using an iCarsoft reader.

Thanks in advance.

SwissXC90 · Nov 29th, 2021, 17:30

Monitor the live wheel sensor readings, all 4 of them, as you drive. That will tell you a lot.

zakmuh · Nov 29th, 2021, 18:25

Hi mate

I had a similar issue. Dunno if my thread would be any use...

https://www.volvoforums.org.uk/showthread.php?t=321541

Check if the shaft has loosened and the reluctor ring moved out of alignment like in mine.

2Diesels · Nov 29th, 2021, 19:12

If it pulses the abs at low speeds and you get no errors or lights it’s most likely as above a shaft loose or a bad ABS ring

Bagnall · Feb 5th, 2022, 17:03

To conclude.

I went for an ABS ring change to start with and it turned out that was the culprit!

It looked ok on a visual check, with no noticeable cracks or damage. It seemed to get worse in the cold.

Driving like new again.

Thanks for advice and hope it helps someone in the future.

Nov 29th, 2021, 16:31	#1
Bagnall Junior Member Last Online: Jul 1st, 2023 11:08 Join Date: Oct 2019 Location: Lincoln	Xc90 2004 ABS operating randomly Hi Xc90 2004 engine code D5244T I’ve been driving around as normal the past few days, and it feels like the ABS keeps operating when braking. In normal driving conditions, when it isn’t necessary. It doesn’t do it all the time, but it’s becoming pretty consistent and it happens now on every drive I take. Has anyone had a similar problem? I’m assuming it’s the ABS, could it be anything else which would vibrate the brakes under braking. Both wheel bearings have been changed recently, and one abs ring. No faults after fitting for a few months. I’m thinking possible wheel sensor fault, but no fault codes are reading on the ECU using an iCarsoft reader. Thanks in advance.

Nov 29th, 2021, 17:30	#2
SwissXC90 Premier Member Last Online: Mar 20th, 2024 18:26 Join Date: Jan 2016 Location: Cross Country	Monitor the live wheel sensor readings, all 4 of them, as you drive. That will tell you a lot. __________________ XC90 R-Design MY2009, Black Sapphire Metallic. HP-Sound, RSE, Nav, Tel, ParkingCam, BLIS, ParkingHeater, RestHeat, Removable Towbar, Summer: CRATUS 20x8 on Pirelli Scorpion Zeros 255/45, Winter: NEPTUNE 17x7 on Continental WinterContact 4x4 235/65.

Nov 29th, 2021, 18:25	#3
zakmuh Junior Member Last Online: Apr 25th, 2022 11:15 Join Date: May 2016 Location: Nottingham	Hi mate I had a similar issue. Dunno if my thread would be any use... https://www.volvoforums.org.uk/showthread.php?t=321541 Check if the shaft has loosened and the reluctor ring moved out of alignment like in mine. __________________ 2007 (Mk I) Volvo XC90 SE 2.4D D5 - 199,617 miles. Silver, black leather interior. Last edited by zakmuh; Nov 29th, 2021 at 18:36.

Nov 29th, 2021, 19:12	#4
2Diesels Premier Member Last Online: Dec 23rd, 2023 14:13 Join Date: Apr 2011 Location: .	If it pulses the abs at low speeds and you get no errors or lights it’s most likely as above a shaft loose or a bad ABS ring

Feb 5th, 2022, 17:03	#5
Bagnall Junior Member Last Online: Jul 1st, 2023 11:08 Join Date: Oct 2019 Location: Lincoln	To conclude. I went for an ABS ring change to start with and it turned out that was the culprit! It looked ok on a visual check, with no noticeable cracks or damage. It seemed to get worse in the cold. Driving like new again. Thanks for advice and hope it helps someone in the future.

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