Greetings,

We recently bought a used 2005 XC90, 2.5t, with DTSC.

On a trip out of state, 'anti-skid service required' message pops up.

I have access to vida-dice scanner, so I plugged it in and ran diagnostics. It reported:

BCM-0109 - Communication problems with SAS/SWM, internal fault
SAS-0008 - Steering wheel angle sensor, internal fault.

I bought a new clockspring (which contains the steering wheel angle sensor), installed it (set it 2.5 turns from counter-clockwise stop according to the VIDA instructions), and it made no difference. Cleared codes came back.

The VIDA instructions now recommend replacing the Steering Wheel Module (SWM).

My question is - does either the clockspring, or the SWM require a software load/update ? The instructions in VIDA seem to be conflicting, they mention a software reload (9438417) for the SWM if later than 2005 with DTSC, but only list S80 as the vehicle?!

Anything else I'm missing?

 

Update.

So, today (obviously in some fit of madness), I decided to stop by my local Volvo stealership and ask them.

They agreed to do a courtesy diagnostic, and reported back that my clockspring needed replacing! I proceeded to tell them that I had JUST put in a new one, purchased from them 2 days ago. The tech proceeded to tell me that the one he pulled out was damaged, and showed me the damage.

The damage he was referring to is the tiny tabs next to the locking screw that goes in while the clockspring is being installed. Granted, when I was installing it I grabbed the steering wheel to pull myself into the seat, before loosening the screw completely, and it scraped the two side tabs.

So, I asked him how some superficial damage to the clockspring casing can cause the steering angle sensor (which is mounted to the underside of it) to malfunction, he insisted he has seen it "many, many times" and the clockspring needs to be replaced, once again. I once again pointed out that my steering wheel controls/horn/airbag all work fine, and that the codes are for the steering angle sensor, which is mounted to the bottom, and has no electrical connection to the clockspring itself...

I got quoted $550 to have a new clockspring installed, and as sure as they were that my new clockspring was broken - they said 'If that doesn't fix it, it could be the steering angle sensor under the passenger seat'... I asked whether he was referring to the 'active yaw sensor'...

Anyway, I said I would think about it (mostly i wanted to think about whether I'm prepared to spend $550 on DSTC. We live in Arizona, and I don't foresee many situations where I would need it...

They put the car together, and I left. Half way home, I noticed that my steering wheel controls NO longer worked, and they worked on the way there.

I was fuming by that stage, so when I got home - I took out the clockspring, and found out why. The 'qualified volvo technician' had shoved the unit back in without any attempt at alignment, and bent 2 of the 4 pins connecting it to the Steering Wheel Module! I carefully straightened those, and put it back in - and my steering wheel controls were back!

Now, I am obviously not going to go to this dealership again (Volvo of Tempe).

However, can someone on here confirm/deny their claim that I have in fact broken the clockspring when installing it, because of the two screw retention tabs? Also, they mentioned multiple times a 'SAS reload' software... Is it possible that there is nothing wrong with my new part, but the car needs to have the SAS reloaded in order to 'activate/calibrate' the new part?

I am referring to this:
SAS reload for Volvo XC90 (2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011) (8691296)

Pictures attached:

Pins and socket bent by the "qualified" volvo service technician:





Scraped screw retention clockspring casing tabs which supposedly *broke* the whole unit:

 

Yes you need to download software to steering wheel module. First connect to VIDA, select tool, read vehicle, click software, on software product you will see list software go to steering wheel module SWM reload, query order from book store, make a purchase, then do download. After software downloaded perform calibration steering angle sensor.

 

I own a 2008 volvo xc90 3.2L I6 (B6324S) AWD. I have the anti-skid temporarily off & anti-skid service required message displayed intermittenly. I had it scanned with a VIDA device and the following 2 codes came up:

BCM-U042864 Invalid data received from steering angle sensor module - algorithm based failures - signal plausibility failure.

SAS-C009404 Steering Angle Sensor Analog / Digital Sensor - General Failure Information - System Internal Failures.

Was told I needed to purchase a steering angle sensor MODULE (NOT STEERING ANGLE SENSOR). But when researching online I can not find a mfg# to purchase.

Also told by a different party that what I actually need is the clockspring that comes with the steering angle sensor in it. Comes already programmed, just need to have it recalibrated. Part# 31313084


I'm also confused, are the steering angle sensor and steering angle sensor module and clock spring all the same thing?

I would like some clarity as to what exactly I need to purchase. the person who scanned it for me is not a volvo tech but operates his own garage.

I also have the screen shot of the software displaying the codes if that helps. I can send it via email.

 

In my 2005 model, the steering angle sensor is indeed part of the clockspring. Not sure why, personally, the two come apart perfectly fine with three tiny screws... but they sell them as one part.

It still needed to be 'programmed' though, but that may have changed in yours.

One thing to keep in mind - even replacing the clockspring+steering angle sensor - did NOT fix my problem. The instructions in VIDA basically say 'Replace steering angle sensor (as part of clockspring). If that doesn't work, replace steering wheel module'. In my case, it didn't work. I ended up deciding that spending another $250 on the steering wheel module wasn't really what I wanted to do at that time, so I have been living it the way it is. We live in the southwest, never see any snow, so the anti-skid system isn't really critical for me...

Either way, steering angle sensor IS part of the clockspring, sold as one part. Be aware that it may not fix your problem though...

 

since my bcm code states (Invalid datareceived from steering angle sensor module - algorithm based failures - signal plausibility failure.) im going to purchase the steering module first. have a feeling the clockspring isnt what i need, but not exactly sure. i figure based on the 2 codes i got from VIDA there would be more of a definitive answer.

 

You definitely need clockspring. Angle sensor is part of it.
After replacing you need to calibrate it via VIDA.
Calibration is done via BCM module.

 

OK,

Same issue "Anti-Skid Service Required", Used VIDA/DICE and got code BCM-0109.
I have read many threads and this code seems to point to Clockspring (a $260 part!).

I don't mind spending $260 (I can replace this myself) but the $1M question is: for those of you with BCM-0109, how many of you solved the problem by replacing the clockspring?

I hate to spend $260, only to find out the problem is elsewhere!

Any opinion is appreciated!

---
2005 XC90 2.5T 85K miles

 

Could also need a SAS Module update. I start with those, calibrate DSTC and test drive according to the bulletin about these codes. Then if it comes back on, the clockspring needs replacement.

 

Could someone walk me through SAS Module update procedure (link?)...
Can I do it with my VIDA/DICE (without dealer subscription)?

 

Thanks for the reply,

My steering wheel is a tiny tiny tiny bit to the R when the car is going straight.
I can adjust the steering wheel back to dead center to see if this solves the problem...
Do you think adjusting the SW back to dead center solve this issue?

 

You cannot update the software without a subscription to allow software downloads. And I don't know if you can get a subscription with a knockoff VIDA and DiCE.

Adjusting the steering wheel won't fix anything and will only mask a problem you may have with the alignment being off.

 

Did NOT fix it for me.

I couldn't get the software update myself, as my VIDA is from china. Took it to an indy volvo shop, they updated the software on both the new clockspring, and the SWM (steering wheel module). No go. Next recommended step is to replace SWM.

At that point, I decided I have sunk enough money and time into this, I live in Arizona, don't really need the anti-skid. I've been driving it like that, at some point I will replace the SWM and get it fixed, but waiting for prices to drop a little more. (the clockspring was $350 when I bought it, it's $250 now... SWM has dropped in price by 1/3 in a couple of years as well...).

In hindsight, knowing what I know now - I would have replaced the SWM first (that's where the electronics for the steering angle sensor are in, though the sensor itself is in the clockspring).

Also, the sensor is supposedly an 'integral' part of the clockspring... Right.. It is held to the clockspring housing by 3 tiny screws, at the back of it. Thank you Volvo for forcing me to buy the whole clockspring, when it is obvious the sensor is totally (and easily) replaceable by itself...

 

My alignment is dead on (I have the alignment sheets from the P.O.).

The problem is: the alignment shop did the job well in terms of alignment specs, but the SW is ever slightly crooked when driving straight. It is just a tiny bit from the center. If a circle is 360 degrees, then I'd say the SW is off about 2-3 degrees, very slightly off.

 

The steering wheel should never have to be adjusted, so there is something else causing it to be off. If it's that slight, it could be something as simple as tire pressure or tire wear or something worn out in the suspension.

Either way, it is not the cause of these codes.

 

I have a similar problem, but in a different direction. 07 xc90 3.2 100,000miles. Message center reads anti-skid temporarily off then goes to requires service. Oct. 2013 dealer finds BCM and SAS codes t5 19989 upgrade SAS. tj 19989 replace contact wheel. Est. 650.00
July have them perform service, but anti-skid will still not work, car now needs AOC pump and sensor. The actual Est. sheet says replace DEM oil pump, no code numbers given. Est. 800.00 A couple of questions.
#1 REALLY?
#2 If necessary, is it something I could R&R then take to dealer for an upgrade?
#3 Can these be gotten used?

 

a quick update a few years after this thread...

My indicator stalk started going out a while back, it would miss blinks every now and then, and was getting worse.

Eventually it got bad enough i decided to fix it. Found a guy on CL parting an XC90, got the indicator stalks, the SWM (which they plug into, sits behind the clockspring...), and passenger door lock mechanism for $50 bucks.

Replaced SWM (steering wheel module)... and Anti-Skid message went away, has been away for months.

Replacing SWM fixed this issue for me.

 

This sounds like the same thing my SUV needs - left indicators erratic and anti-skid message active.
Do you think the contacts can be cleaned? Or just replace the stalk...
Thanks