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jst



Member Since: 14 Jan 2008
Location: Taunton
Posts: 7683

2011 Defender 110 Puma 2.4 USW Stornoway Grey
intermittent ETC fault
2010 110 11MY 92k miles.

in feb 22 ABS/TC light came on part way through a journey, wen tout when ignition was cycled.

Jul 22 its come back on. intermittently. sometimes at the start of a journey sometimes after a non specified time of driving.

prior to it coming on you can hear (not feel) a noise from within the dash similar to noise you get when ETC operates. there is no light indication at this stage and no grabbing or operating of the brakes. tends to do this on turning.

Sometimes the orange ABS/TC light will then come on sometimes not.


When lights not on ETC is working as it should independently on each wheel. ABS i assume also works but not checked.

no faults showing on OBD reader either with lights on or off.

grateful for any thoughts on where to start. Cheers

James
110 XS Utility
130 Puma Station wagon/camper (in the making)
90 Puma Hardtop
Post #959143 21st Jul 2022 9:00pm
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geobloke



Member Since: 06 Nov 2012
Location: Nottinghamshire
Posts: 4395

United Kingdom 
Ahhhh I was just searching for this problem at lunch... Weird... Rolling Eyes

Checks

1) ABS sensors are correctly seated, connected and the wires are not broken.
2) Earth next to the ABS modulator can cause intermittent illumination of TC/ABS lights.
3) ABS modulator shuttle valve wiring intermittent connection, sometimes over bumps leading to illumination of TC/ABS lights and sometimes activation of ABS without brake pedal pressure. Shocked

Hope that's a starter for 10 Thumbs Up
Post #959146 21st Jul 2022 9:08pm
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geobloke



Member Since: 06 Nov 2012
Location: Nottinghamshire
Posts: 4395

United Kingdom 
Post #959148 21st Jul 2022 9:14pm
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jst



Member Since: 14 Jan 2008
Location: Taunton
Posts: 7683

2011 Defender 110 Puma 2.4 USW Stornoway Grey
Brilliant, thank you Cheers

James
110 XS Utility
130 Puma Station wagon/camper (in the making)
90 Puma Hardtop
Post #959207 22nd Jul 2022 6:12pm
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geobloke



Member Since: 06 Nov 2012
Location: Nottinghamshire
Posts: 4395

United Kingdom 
You're welcome James. Let us know when you sort the problem Thumbs Up
Post #959343 24th Jul 2022 9:55am
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jst



Member Since: 14 Jan 2008
Location: Taunton
Posts: 7683

2011 Defender 110 Puma 2.4 USW Stornoway Grey
Still not sorted. Intermittent means it never fails when I have the time to look at it! I think it's wheel sensor issue. Cheers

James
110 XS Utility
130 Puma Station wagon/camper (in the making)
90 Puma Hardtop
Post #961382 11th Aug 2022 11:18pm
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Barneyboy



Member Since: 19 Nov 2014
Location: Oxfordshire
Posts: 1583

England 1986 Defender 90 2.5 n/a Diesel ST Nato Green
hi jst, strangely my neighbour asked for some assistance last week as his partners Hyundai i20 had both the Traction control and ABS light come on, we plugged it in and it said fault L/H rear wheel sensor he ordered one and we replaced it on Monday evening and sure enough the lights have now gone out, hopefully yours will do the same Thumbs Up cheers Paul
Post #961418 12th Aug 2022 12:39pm
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Screbble



Member Since: 26 Apr 2015
Location: Lancashire
Posts: 2027

United Kingdom 2004 Defender 90 Td5 XS CSW Zambezi Silver
I’m having a similar issue (see post on maintenance thread).

I’ve replaced a suspect rear abs sensor and the abs shuttle valve thingy and lights (3 amigos) are still on.

I was wondering if the fault has to be reset before the lights go out?

Any advice guys and gals?

Cheers,

Will
Post #961458 12th Aug 2022 6:21pm
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Barneyboy



Member Since: 19 Nov 2014
Location: Oxfordshire
Posts: 1583

England 1986 Defender 90 2.5 n/a Diesel ST Nato Green
Hi Screbble, I can’t advise about LR but Ilona’s Hyundai cleared the lights once the sensor had been replaced Thumbs Up cheers Paul
Post #961503 13th Aug 2022 9:04am
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Screbble



Member Since: 26 Apr 2015
Location: Lancashire
Posts: 2027

United Kingdom 2004 Defender 90 Td5 XS CSW Zambezi Silver
Thanks Paul - I kind of thought that but also subconsciously wanted it to require a reset to prove the repairs had worked…

The replacement of the WABCO modulator solenoid switch thingy hasn’t changed anything, and to be fair the old one looked and felt fine, but at least I know that’s not the cause. It was fun changing it!

Im now ‘hoping’ that my abs sensor isn’t in far enough…

All this hoping it’s not the mega bucks abs modulator…

Obviously I need to get it plugged in somewhere. Anyone got a Nanocom or similar in and around West Lancashire?

Thanks Paul,

Will
Post #961504 13th Aug 2022 9:31am
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LandRoverAnorak



Member Since: 17 Jul 2011
Location: Surrey
Posts: 11240

United Kingdom 2013 Defender 110 Puma 2.2 USW Orkney Grey
Can you not compare it with the other side? Darren

110 USW BUILD THREAD - EXPEDITION TRAILER - 200tdi 90 BUILD THREAD - SANKEY TRAILER - IG@landroveranorak

"You came in that thing? You're braver than I thought!" - Princess Leia
Post #961516 13th Aug 2022 11:46am
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Screbble



Member Since: 26 Apr 2015
Location: Lancashire
Posts: 2027

United Kingdom 2004 Defender 90 Td5 XS CSW Zambezi Silver
Yes the plan is to do that today when the sun has started to go to sleep.

I’m hoping the OSR is further in!

I have a second spare ABS sensor so will take the opportunity to replace that one at the same time - after measuring and photographing of course Laughing

I’m also going to look at the ABS wiring, relays, connectors etc. and see what I can find…

Wish me luck Thumbs Up
Post #961519 13th Aug 2022 12:04pm
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Screbble



Member Since: 26 Apr 2015
Location: Lancashire
Posts: 2027

United Kingdom 2004 Defender 90 Td5 XS CSW Zambezi Silver
Just compared both rear abs sensors in terms of ‘depth of insertion’ (sounds like a phrase from Carry on Landrovering) and they are the same - approx 20mm from the face of the orifice to the cable end of the sensor.

So that ‘kind of’ made me a little downhearted as that was unlikely to be the problem.

I then tested all the fuses, relays, wires, connectors etc. on the ABS circuit and used contact cleaner along the way.

Low and behold those flippin’ 3 amigos have vacated the instrument binnacle!

Great news BUT not sure what (if anything) fixed it…

They may be back Wink
Post #961536 13th Aug 2022 4:28pm
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Barneyboy



Member Since: 19 Nov 2014
Location: Oxfordshire
Posts: 1583

England 1986 Defender 90 2.5 n/a Diesel ST Nato Green
Hi Screbble, that’s great news, sometimes that’s all it takes unplug a good clean and reassemble, hopefully they have been banished for good Thumbs Up cheers Paul
Post #961592 14th Aug 2022 9:30am
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