Anti Skid / Brake Warning + Gauges and Dials Stop working - V70 - 2003

griffithrtr · Post by **griffithrtr** » 01 Apr 2025, 10:42

Hi all,

I've been having a intermittent problem and I'm looking for a bit of guidance.

While driving occasionally either "Brake Failure please stop safely" or "Anti Skid service Required" will come up. When this happens parts of my DIM also fail, typically the Tachometer, Temp gauge Instant/Average MPG and and current trip, Occasionally the speedo also dies. The issue seems to happen at random, not when I hit a pot hole or anything.

There doesn't seem notable drop in performance so I don't believe its going into limp home mode or anything.

As a rule if I stop and start the car it runs fine again, however I have had a couple of times where it'll just crank and not start, then it'll require the battery disconnecting and reconnecting.

Unfortunately I do not have VIDA, I have used my ICarSoft V3 scanner on it and it throughs up a few communication errors between modules.

Weirdly though it doesn't think the vehicle has a CEM fitted at all which is somewhat suspicious.

After reading multiple forums it seems to either be the Brake module, CEM or DIM. However as I've currently got a 33% chance of been right I could with some advice on how to move forward with the fault. Thanks

Post by **br0dy519** » 01 Apr 2025, 14:19

CEM sounds right for this. Xemodex has a troubleshooting flowchart that involves heating up the CEM to watch it behave erratically.

Worth at least pulling it and inspecting it. I cannot recall if 2003 had the water ingress issue. Worth pulling relays and cleaning electrical contacts to start though.

griffithrtr · Post by **griffithrtr** » 01 Apr 2025, 14:26

Thanks, I'll have a look into that flow chart

griffithrtr · Post by **griffithrtr** » 01 Apr 2025, 14:34

also as a side note the main two codes my reader is getting are ECM-A02B and ECM-500. Think I'll be investing in VIDA to see if that can tell me any more

griffithrtr · Post by **griffithrtr** » 09 Apr 2025, 12:15

So update, I've now got VIDA Hurray

Car seems to be behaving better for no real reason, took it on a 200 mile drive and while it did through the "Anti-Skid Service" the DIM behaved fine, the 2 codes it's bringing up are BCM-0115 and BCM-0148 which are both brake related, so seem to be pointing me towards the BCM ?

Post by **jonesg** » 09 Apr 2025, 13:50

griffithrtr wrote: ↑09 Apr 2025, 12:15 So update, I've now got VIDA Hurray

Car seems to be behaving better for no real reason, took it on a 200 mile drive and while it did through the "Anti-Skid Service" the DIM behaved fine, the 2 codes it's bringing up are BCM-0115 and BCM-0148 which are both brake related, so seem to be pointing me towards the BCM ?

vida can read the steering wheel input angles, zero at center and rising values as you move away from center.

ProjektS · Post by **ProjektS** » 09 Apr 2025, 14:03

Hi

I found your post because i am/was facing the same problems since a few weeks.
After troubleshooting the issue and spending a lot of time searching the web, I hope I found the problem on my car. I strongly believe the differential electronic module (controller for the Haldex active on demand 4wd unit) caused the problem.
So if your car is also an AWD, let me know and I will write more details about my case and what I found out.

Just let me know.
Br

Post by **br0dy519** » 09 Apr 2025, 14:59

ProjektS wrote: ↑09 Apr 2025, 14:03 Hi

I found your post because i am/was facing the same problems since a few weeks.
After troubleshooting the issue and spending a lot of time searching the web, I hope I found the problem on my car. I strongly believe the differential electronic module (controller for the Haldex active on demand 4wd unit) caused the problem.
So if your car is also an AWD, let me know and I will write more details about my case and what I found out.

Just let me know.
Br

Good idea. Fuse has been removed for my DEM for years. Forgot about that causing BEM / CAN interference.