Mrs M reported that the Traction Control error had returned. I wondered if the ABS sensor had vibrated out again, but there was no ABS warning. So, I checked through the nanocom and found only one error "invalid fault code" on the EAS system. I deleted it and the TC error on the dash dissapeared. So it looks like there's something strange going on in the EAS.

So, I had a play with the EAS in light of what Gilbertd said in my other thread and confirmed it won't lower to motorway position automatically. If I press EAS inhibit and select motorway it'll go there. If then switch off EAS inhibit, the EAS stays in motorway when above 50mph and returns to High as normal when you drive through a village at 30.

Finally, one of the codes that I've seen in the Motronic was "rough road signal implausible". Unless anyone has a bolt of inspiration I think I might be asking MartyNZ about EAS ecus in July....

Whaddya reckon? :)

IIRC Rave says that the Rough Road Signal is generated by the ABS ECU, not the EAS ECU.

Did about 350 miles this weekend. There's definitely something weird going on!

It all started out fine, no ABS beeps or Traction warnings. However, the EAS has a habit of rising from motorway to normal to offroad to the emergency high level even when driving down the motorway at 70. If you press the EAS inhibit switch it still does it, just far less often. I've got used to pressing the EAS down rocker every 30 minutes.
I had one fault with the four lights flashing, dash message and a beep. I reset it with the nanocom after reading the two normal faults "Pressure switch failing to close" and "Invalid fault code".

Then after a couple of hours driving we hit some traffic and whenever I pressed the brake there was a rapid clicking relay noise. It didn't seem to be the ABS activating, it wasn't very regular and the pedal feel was fine. Then the ABS Beep went off, closely following by the traction warning and the relay noise stopped. The ABS would be an intermittent warning until then, now it's constant. I guess something has gone pop.

Interesting times!

I wonder if it could be the ABS ECU that's having issues...

I think I have a repaired spare ABS ECU for the Thor models, so if you are down at Summer Camp, then we can swap it out to see if the ECU is the problem, or whether it's something else that's inputting to the ECU that's causing it...

Oh, I'm definitely coming to summer camp :)
Although I don't think I'd get many cheers for arriving on a flat bed!
Thanks for the offer Marty, appreciated.

In the meantime, I think it's time to get busy with the soapy water and a spray bottle.... that EAS has GOT to be leaking somewhere.

MARY ? Is there something we're not being told, lmao

oops!
I think I'll edit that :)

Haha... I have to double check emails I send as sometimes I type too quickly that I miss the T out aswell....

no10chris - got your PM re summer camp... If you have a look in here: Summer Camp 2016 there are some details... I'm going to be posting up again in there soon to confirm details, who's coming etc.

Marty

I've just had a poke through the box of bits that came with The Duchess (because she never carries cash) and found what looks suspiciously like a spare ABS ECU. At least, it looks like a smallish ECU and says WABCO on it.
Hmmm....

Is it a black box? I can't remember the part number off the top of my head - but the earlier ECU's were grey/silver and the later ones for Thor vehicles were black.

Can't hurt to try swapping it over if it is a spare ABS ECU...

Yep, black. It says Wabco and Ranger Rover on it, which has got to be a good start :)
SRD100501 which comes up as:
https://www.lrdirect.com/SRD100501-Ecu-Traction-Co/

So yep, I guess it's the right one. If only I knew someone who could test it... ;)
The box is clean and has the label but it isn't new judging by the mounting holes and the connectors which show some slight signs of use.

The ABS/Traction issue is still intermittent. However, I drove home from work with the ABS/Traction working fine and mounted the kerb when I parked up - instant ABS warning on the dash followed by the Traction a couple of seconds later. It was the Front Left that went up onto the path. I've noticed the fault appearing sometimes when off road (mild gravel tracks with ruts/tight corners) but couldn't be sure which corner had been moving at the moment the fault occured - so I think it's worth checking the wiring right back to the ECU on that corner. I guess I'll need to work out a way to move the suspension/steering through the full range of travel while I have a multimeter hooked up. This could be a bit of a head scratcher :)

I think pushing the sensor in/charging the battery have been red herrings, but at least they were free :)

I wonder if it is worth checking the reluctor ring on the LHF to see if there is any damage to it at all... I've head of the rings having chipped a tooth or even cracked before - which might only show up if it gets a sudden shock...

Chances are the ECU is OK though if you can consistently (well as much as possible for an intermittent fault!) get it to do it on one corner.. It's worth keeping the other ECU though as they are stupidly expensive second hand if one does fail (another reason why I want to look and see if they are repairable!)