ABS, Traction Control and Handbrake Lights won't go off

[The Cone of Silence]

Morning all,

Started Monty up on Saturday morning and noticed when I started to move away that the ABS, Handbrake and TC lights all remained on. I tried shut down and restart - no biscuits.

I haven't tried to see if the ABS and TC still work.

I checked the Scangauge II and there were no fault codes and none pending either. I thought this 'Three Amigos' quirk was a Disco issue?

Anyone with any suggestions as to what to check first? (and how to check it)

[filcar]

have you got the Scangauge permanently connected? I have had issues with the Ultragauge when doing some electrical work on the car similar to this, disconnect the gauge, restart and all Ok again

[The Cone of Silence]

have you got the Scangauge permanently connected? I have had issues with the Ultragauge when doing some electrical work on the car similar to this, disconnect the gauge, restart and all Ok again

Thanks Filcar, I do; it's been there for 4 years now. I'll give it a shot.

[djam1]

While its a common issue with a D2 it can also happen to a Defender.
Try to read the codes with something compatible with a Land Rover (If its a Td5 I am pretty sure a Scan guage wont get all codes as the car isnt full OBD11 compliant)
If you cant do that check the cables to the wheel sensors and reseat all the sensors with a screw driver and the heel of your hand (just knock them in)
It will be likely Shuttle Valves if it is they can be replaced with Discovery 2 ones.


Morning all,

Started Monty up on Saturday morning and noticed when I started to move away that the ABS, Handbrake and TC lights all remained on. I tried shut down and restart - no biscuits.

I haven't tried to see if the ABS and TC still work.

I checked the Scangauge II and there were no fault codes and none pending either. I thought this 'Three Amigos' quirk was a Disco issue?

Anyone with any suggestions as to what to check first? (and how to check it)

[The Cone of Silence]

While its a common issue with a D2 it can also happen to a Defender.
Try to read the codes with something compatible with a Land Rover (If its a Td5 I am pretty sure a Scan guage wont get all codes as the car isnt full OBD11 compliant)
If you cant do that check the cables to the wheel sensors and reseat all the sensors with a screw driver and the heel of your hand (just knock them in)
It will be likely Shuttle Valves if it is they can be replaced with Discovery 2 ones.

Thanks djam1,

Mine is a Puma (2008); do you know if the scangauge might still miss some codes?

Re Wheel sensors; where are these located? Assume I need to pull/ unscrew them, give them a clean and push them back in as a first test?
Re Shuttle valves; i'm at a loss for the purpose of these and how to inspect them - any clues?

[Tombie]

Are you sure the Scanguage can see the ABS controller...

Most can only read the modules they’re designed to.

[DiscoMick]

Our Defender had this after getting new rear brake pads and rotors. Turned out the sensor on the driver's side rear had been re-fitted too close to the rotor. Adjustment fixed it.
So I'd be checking the sensors.

[The Cone of Silence]

Are you sure the Scanguage can see the ABS controller...

Most can only read the modules they’re designed to.

I don't know the answer to that Tombie, I'd normally come to AULRO to ask such a question!

I guess that if it cannot, I need to plug into a diagnostic that can read it and clear the codes - I'll have a chat with Brad at KLR.

[djam1]

I havent had anything to do with Puma ABS so might be wrong although I do remember the early Puma had the same part numbers on most of the ABS components.
The rear sensors on a TD5 push in from the backing plate area just follow the wire you could clean them I guess I just knock them home.
IF it is something to do with the Shuttle Valves IF yours has Shuttle Valves have a look at RAVE and see what it says they are just a couple of switches that have certaiin values with switched in combination.


Thanks djam1,

Mine is a Puma (2008); do you know if the scangauge might still miss some codes?

Re Wheel sensors; where are these located? Assume I need to pull/ unscrew them, give them a clean and push them back in as a first test?
Re Shuttle valves; i'm at a loss for the purpose of these and how to inspect them - any clues?

[jon3950]

I think you’ll find the Scangauge only reads generic OBDII codes. The codes you need to read are LR specific for so you need an IIDTool or similar.

No doubt KLR can sort you out and are closer than I am, but I have an IIDTool that you can use on a Puma if needs be.

Cheers,
Jon

[The Cone of Silence]

Update

KLR installed a new ABS relay today and cleared the 'sticking pump' fault code. I'm not entirely surprised that it didn't work, given the relay has sod all to do with the pump sticking.

Brad seems to think a new ABS module might be required and he suggested trying to find one second hand so we might go down that route. Will update when I know more.

[jbe]

I was told that the Puma ABS is pretty much the same as the Td5 Wabco system. Personally, I wouldn't embark on replacing bits without having plugged in a diagnostic tool like the nanocom to see what fault codes it comes up with. It could be a shuttle valve, the ABS pump and a couple of other things. Last time, I had to look for a ABS module, I was looking at $3500 from memory.
Hope that helps.

[The Cone of Silence]

I was told that the Puma ABS is pretty much the same as the Td5 Wabco system. Personally, I wouldn't embark on replacing bits without having plugged in a diagnostic tool like the nanocom to see what fault codes it comes up with. It could be a shuttle valve, the ABS pump and a couple of other things. Last time, I had to look for a ABS module, I was looking at $3500 from memory.
Hope that helps.

OUCH. Reckon I'll just live with it if that's the cost. $3500 for the ABS to work? I might need a new gearbox so I'll hope that Santa can help me out with the ABS module...or that we can find one second hand.

The boys used their computer and identified the specific code and it was the pump sticking. They're onto it but wish they'd be in as much of a hurry to solve the problem as I am.

[sashadidi]

had that a few years back, lights stayed on but abs etc working ,from memory (will check with him) friend checked and cleaned all earth cables on my 2008 Puma and it went away....

[Island_Moose]

Check to see if the wire at the brake fluid reservoir cap has worked its way loose. Happened on mine last month with the same symptoms.

[The Cone of Silence]

Check to see if the wire at the brake fluid reservoir cap has worked its way loose. Happened on mine last month with the same symptoms.

Just checked - thanks Island_Moose. All looks fine under the hood though. Well, apart from all the dirt.

Brad ran a diagnostic test on it this morning and the system asked for us to rotate each wheel forwards (up on a jack) so it could apply the brakes but nothing happened so he's pretty sure the modulator has messed its trousers.

Now these are expensive but Brad mentioned that he's wrecking a burnt out Defender so he'll check to see if the module on that is still good and if so we'll swap them over. Fingers crossed. Looks like I need a shiny new gearbox from Ashcroft too so the dollars are flying out the door with considerable verve and vigour at the moment.