Hello,

first post here.

I have a 2014 Autobiography SDV8 which has been maintained by LR up until I purchased 10 months ago.
It has been back to LR under warranty for various items but nothing related to my new symptoms.

My symptoms are as follows:

When driving the following suddenly appear: ABS fault, parking brake fault, HDC fault, stability control fault, the steering becomes stiff as if the PS is limited.
The car then will lower the suspension.

Then just as suddenly the vehicle will go back to normal, it has been getting worse but can go for a couple of days without an issue.

So, I hooked up SDD and one of the issues is the front right speed sensor, displaying as a 100% fault,
If i cycle through the events, this is the first triggered item and everything else follows.

It does point to the sensor and I am pretty sure I read on here a user who had the same symptoms and it turned out to be the sensor.

I suppose it could always be the earth in the wheel arch throwing the sensor out, again I have read issues with that on here.

Anyway, if anybody could shed their thoughts it would be most helpful.

Thanks

Any

Sounds to me like the wheel sensor will most likely be the fault. It'll throw up all the warnings you have seen (although not sure about the park brake one!).

It could also be the wheel bearing, if that's got play in it, it can throw up a fault like the one you're seeing.

Any bearing rumbles? How many miles on your RR?

Jon 1992 RR Classic 3.9 efi Vogue
2014 Disco 4 HSE
===================
Both my fatties now gone...
Previous: 2011 L322 4.4 TDV8 Vogue SE /// 2002 L322 4.4 V8 HSE /// 2009 Discovery 3 2.7 TDV6 XS /// 2004 Defender 90 TD5 /// 1993 110 V8 Snatch Landrover /// 2005 Discovery 3 2.7 TDV6 SE (Aus) /// 1990 110 Isuzu 3.9 County (Aus) /// 1976 Series III Trayback (Aus)

welcome to the forum.


to start with check the earth straps and the battery voltage. ... - .- -.




Y. O. L. O.
.

No wheel bearing rumbles, vehicle drives beautifully. Park brake fully functional. Its got 101k on the clock and iam the 3rd owner.

stan wrote:

welcome to the forum.


to start with check the earth straps and the battery voltage.

I had been for a descent drive prior to plugging it in so I wouldve thought the battery would be good, however now you mention it SSD had the battery symbol in Yellow.

Thanks for the welcome

Probably not bearing relateed then.

As stated, it could well be a faulty wheel sensor, or dirt in the trigger ring.

Good call from Stan, a failing battery (low voltage) or corroded earth straps can cause all sorts of issues!

Jon 1992 RR Classic 3.9 efi Vogue
2014 Disco 4 HSE
===================
Both my fatties now gone...
Previous: 2011 L322 4.4 TDV8 Vogue SE /// 2002 L322 4.4 V8 HSE /// 2009 Discovery 3 2.7 TDV6 XS /// 2004 Defender 90 TD5 /// 1993 110 V8 Snatch Landrover /// 2005 Discovery 3 2.7 TDV6 SE (Aus) /// 1990 110 Isuzu 3.9 County (Aus) /// 1976 Series III Trayback (Aus)

I had to replace a rear wheel sensor a few weeks ago for these very symptoms. My first thoughts were that it was the battery, which I replaced as it was still on its original but it didn’t fix it. I also checked the earth point but they were also fine.

Getting the old one out was a bit of a challenge. Got - 2017 SDV8 Autobiography in Loire Blue
Had- 2008 TDV8 Vogue SE in Java black
Had - 2007 S/C in Stornoway Grey

Ah thanks for that, really good to know Iam in the right area.
Going to have a look this week when I get time.

D3Jon wrote:

Sounds to me like the wheel sensor will most likely be the fault. It'll throw up all the warnings you have seen (although not sure about the park brake one!).

hmallett wrote:

The park brake module uses wheel speed data to know what mode it should engage the park brake with, so to me, it makes sense that you would get a park brake error too..

Oh yes of course! Never thought of that, it does make sense!

Jon 1992 RR Classic 3.9 efi Vogue
2014 Disco 4 HSE
===================
Both my fatties now gone...
Previous: 2011 L322 4.4 TDV8 Vogue SE /// 2002 L322 4.4 V8 HSE /// 2009 Discovery 3 2.7 TDV6 XS /// 2004 Defender 90 TD5 /// 1993 110 V8 Snatch Landrover /// 2005 Discovery 3 2.7 TDV6 SE (Aus) /// 1990 110 Isuzu 3.9 County (Aus) /// 1976 Series III Trayback (Aus)

Another vote for ABS sensor.
I had all your symptoms and LR assist diagnosed a failed ABS sensor. The guy explained that the heavy steering was by design and provides a little more feed back as more effort is required, as the car essentiallly doesn’t know what happening with the errant wheel. L460 460e PHEV AB. Belgravia green.
Previous toys:
L405 2017 TDV6 AB
4.4 TDV8 Westminster. Santorini Black
1976 Lightweight
4.0l P38
2 Disco 3s
Jaguar XJ6 (X350)
Jaguar XJ8 (X308)
Jaguar XK
Jaguar XK8. Confirmed JLR nut.

Ok, so I have replaced the sensor now.
do I have to calibrate it using sdd ?

As it was intermitment when I moved the vehicle to carry out the replacement there were no lights on.
Having replaced it all the lights were immendialty on hence "do i need to tell the vehicle its been replaced" ?
thanks

UPDATE:

seems I have been sent the incorrect sensor, great !
no need to reset anything just clear the dtcs and check the lights are extinguished.

will update again on Tuesday.

Appreciate you're getting aspecific DTC for a WSS, but if you haven't already, it would be worth it to check the earthing stud under the front offside arch liner as I have had this on 2 vehicles now, on my L405 it was very strange, adaptive cruise control would cancel randomly due to a loss of comms with the ABS module, but only when the lights were on.

In the daytime it would drive without problem, soon as the lights were on, within a few minutes ACC would self cancel (also saw the speedo needle bouncing around a few times).

Checked the earth stud and it looked visually fine, put a wrench on it to check it physically and it came clean off. I assume due to the increased load of the headlight (the right headlight is earthed here too) being on was creating a high resistance return for the ABS, hence lights off and it was still ok.

The 4 earths for the ABS all terminate at this single stud, so a single point of failure.

Even if it's ok, it's a good bit of preventative maintenance as it seems they all fail at some point.

HTH L405 SV Autobiography LWB SDV8, finished in Aston Martin China Grey by ETO division.