TRACS/ABS: - Bcm

emhughes · May 3rd, 2018, 18:05

Hi I am new to voc, I have problems with my 2009 xc90 warning lights showing, suspect bcm is faulty, is it possible to drive the car whilst bcm is removed to be repaired.

cheshired5 · May 3rd, 2018, 18:58

It may be safe to a point but your insurance will be invalid so I'll say definitely don't do it.

aslan · May 4th, 2018, 07:36

You'd still be able to drive it, the brakes will still work, though ABS most likely would not function.

I have driven for a few days with the BCM not functioning. I had no choice then as I do not have a replacement car and needed the XC. Needless to say I drove like a granny for those few days ...

SwissXC90 · May 4th, 2018, 08:11

You don't need to drive like a granny.
You just need to know that the ABS is not working and drive accordingly, knowing so.

My first 6 cars had no ABS:

Hillman SuperMinx ca. 1965
Ford Escort ca. 1970
Ford Cortina ca. 1974
Ford Econovan ca. 1985
Fiat Tipo ca. 1990
Volkswagen Golf ca. 1990

I did not drive like a granny.
I went around some corners sideways on gravel roads, locked up the brakes a lot when I wanted, did cool handbrake slides, laid rubber on the road when I could (with sub-hundred horsepower engines that wasn't often), and did a few emergency stops.
All without crashing.

The point is: ABS is simply an extra safety function
You CAN drive without it if you understand that you do not have a working ABS system and simply drive accordingly, not getting into trouble, not locking up your wheels.

And if you DO lock up your wheels, then know how to deal with it (human-powered leg-activated ABS works well, just simply not as good as electronically controlled hydraulic ABS).

60041 · May 4th, 2018, 09:01

As others have said, it is fine to drive with a faulty BCM, however be aware that your vehicle will not pass an MOT in that condition, so don’t ignore it for too long.
Are you sure that the BCM is the problem? Your car is about the right age to have a broken ABS reluctor ring, which will throw up warning lights.
New rings are cheap from GSF and can be fitted in about 45 minutes per side, so it’s worth checking them first.

Sceptre63 · May 22nd, 2018, 13:00

I have the BCM--112 AYC-Sensors not calibrated. Has anyone ran the calibration via VIDA with success?

I have not yet done it as i need a truly flat surface i believe.

May 3rd, 2018, 18:05	#1
emhughes New Member Last Online: Jan 30th, 2023 12:57 Join Date: Mar 2010 Location: broughton	Bcm Hi I am new to voc, I have problems with my 2009 xc90 warning lights showing, suspect bcm is faulty, is it possible to drive the car whilst bcm is removed to be repaired.

May 3rd, 2018, 18:58	#2
cheshired5 Premier Member Last Online: Dec 26th, 2021 13:42 Join Date: Dec 2013 Location: Crewe	It may be safe to a point but your insurance will be invalid so I'll say definitely don't do it. __________________ 2002 S60 SE D5 Manual 209000 miles

May 4th, 2018, 07:36	#3
aslan From far away Last Online: May 9th, 2023 05:21 Join Date: Dec 2006 Location: Selangor	You'd still be able to drive it, the brakes will still work, though ABS most likely would not function. I have driven for a few days with the BCM not functioning. I had no choice then as I do not have a replacement car and needed the XC. Needless to say I drove like a granny for those few days ... __________________ XC90 2.5T 2009 B5204T5 S80 2005 - sold B4204T3 V40 2004 - sold B230E 740 1989 - sold

May 4th, 2018, 08:11	#4
SwissXC90 Premier Member Last Online: Mar 20th, 2024 18:26 Join Date: Jan 2016 Location: Cross Country	You don't need to drive like a granny. You just need to know that the ABS is not working and drive accordingly, knowing so. My first 6 cars had no ABS: Hillman SuperMinx ca. 1965 Ford Escort ca. 1970 Ford Cortina ca. 1974 Ford Econovan ca. 1985 Fiat Tipo ca. 1990 Volkswagen Golf ca. 1990 I did not drive like a granny. I went around some corners sideways on gravel roads, locked up the brakes a lot when I wanted, did cool handbrake slides, laid rubber on the road when I could (with sub-hundred horsepower engines that wasn't often), and did a few emergency stops. All without crashing. The point is: ABS is simply an extra safety function You CAN drive without it if you understand that you do not have a working ABS system and simply drive accordingly, not getting into trouble, not locking up your wheels. And if you DO lock up your wheels, then know how to deal with it (human-powered leg-activated ABS works well, just simply not as good as electronically controlled hydraulic ABS). __________________ 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.

May 4th, 2018, 09:01	#5
60041 Premier Member Last Online: Mar 28th, 2024 10:19 Join Date: Feb 2010 Location: North Northumberland	As others have said, it is fine to drive with a faulty BCM, however be aware that your vehicle will not pass an MOT in that condition, so don’t ignore it for too long. Are you sure that the BCM is the problem? Your car is about the right age to have a broken ABS reluctor ring, which will throw up warning lights. New rings are cheap from GSF and can be fitted in about 45 minutes per side, so it’s worth checking them first. __________________ 2018 V90CC D4, 2022 XC40 1940 Matchless G3, 1980 Moto Guzzi T3 Coming soon:- 1947Rover 14 P2

May 22nd, 2018, 13:00	#6
Sceptre63 New Member Last Online: Aug 5th, 2023 14:26 Join Date: Dec 2017 Location: Luton	I have the BCM--112 AYC-Sensors not calibrated. Has anyone ran the calibration via VIDA with success? I have not yet done it as i need a truly flat surface i believe.

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