The IID will tell you what the E-Diff is doing and the percentage of lock applied , Torque applied , over temperature events in various parts , clutch plate wear , open diff override and many others . 2008 MY Supercharged
Rimini Red / Jet
four zone climate
remote park heater
and no ugly kid windows.
magnus satis quod turpis satis

Thanks Axle. I'll have a look at the manual tomorrow. Can it also test the low and high pressure fuel pumps? Rehab is for quitters!!!

RR 2007 3.6 TDV8 Java Black *
RR 2007 3.6 TDV8 Zermatt silver *
RR 2000 P38 4.6 Met red *
Mercedes 300TE 4-Matic *
Jaguar 420 (1969) *
Nissan 300Z
Citroen XM 2.5TD X 6
Bentley Continental R
Hydrocon Highlander
Hydrocon Hamilton
Hydrocon Huntly
Am told the ones with a * are to be offered for sale! 😳

Departed
LR 1992 110 2.5TD
RR 2000 Holland & Holland 4.6 LPG
RR 4.2 Supercharged with LPG, Vogue SE 2007 Buckingham Blue
RR 2002 4.4 V8 Zambesi Silver

Don't know I have petrol but my guess would be only the fuel rail hp pump
List of IID live values for RDCM rear Differential
Live Values Supported
Actual locking torque. Yes
Clutch over temperature events. Yes
Clutch temperature. Yes
Motor over temperature events. Yes
Motor temperature Yes
Percentage travel remaining on the clutch. Yes
Rear differential - differential control override status. Yes
Rear differential - motor brake request status. Yes
Rear differential - motor brake status. Yes
Rear differential - open differential override status. Yes
Rear differential sump temperature. Yes
Slip speed. Yes
Sump over temperature events count. Yes
Torque limit. Yes
Torque set point. Yes 2008 MY Supercharged
Rimini Red / Jet
four zone climate
remote park heater
and no ugly kid windows.
magnus satis quod turpis satis

Yup found it in the manual this morning. Lets see how it works in practise!  Rehab is for quitters!!!

RR 2007 3.6 TDV8 Java Black *
RR 2007 3.6 TDV8 Zermatt silver *
RR 2000 P38 4.6 Met red *
Mercedes 300TE 4-Matic *
Jaguar 420 (1969) *
Nissan 300Z
Citroen XM 2.5TD X 6
Bentley Continental R
Hydrocon Highlander
Hydrocon Hamilton
Hydrocon Huntly
Am told the ones with a * are to be offered for sale! 😳

Departed
LR 1992 110 2.5TD
RR 2000 Holland & Holland 4.6 LPG
RR 4.2 Supercharged with LPG, Vogue SE 2007 Buckingham Blue
RR 2002 4.4 V8 Zambesi Silver

On a Discovery 3 A Brake Light Bulb or Faulty Brake Pedal Sensor can cause all these dashboard faults.

I just had same on a D3 and fixed all for the price of a bulb.....

May not be same for L322 though.

Crazy but true.

The brake lights were my first port of call. I've seen other references to the brake light switches of which I believe there are two switches at the pedal. I've also been referred to the engine compartment wiring loom.
It seems a nonsense that the diagnostics are so poor on these cars given their heavy reliance on digital electronics and fibre optics.
I love the L322 when they run. However my good lady says "never buy a car with the word Rover in the name"!
At times like this she has a point. Rehab is for quitters!!!

RR 2007 3.6 TDV8 Java Black *
RR 2007 3.6 TDV8 Zermatt silver *
RR 2000 P38 4.6 Met red *
Mercedes 300TE 4-Matic *
Jaguar 420 (1969) *
Nissan 300Z
Citroen XM 2.5TD X 6
Bentley Continental R
Hydrocon Highlander
Hydrocon Hamilton
Hydrocon Huntly
Am told the ones with a * are to be offered for sale! 😳

Departed
LR 1992 110 2.5TD
RR 2000 Holland & Holland 4.6 LPG
RR 4.2 Supercharged with LPG, Vogue SE 2007 Buckingham Blue
RR 2002 4.4 V8 Zambesi Silver

Last edited by Dijit on 10th Feb 2015 9:51pm. Edited 1 time in total

On the D3 its a single Brake Light Switch just above the brake pedal. I also replaced this as they can REEK HAVOC when faulty.

£20 part and 5 minute swap out BUT FOLLOW exact instructions in BODSIES BIBLE on the D3 forum.

Sounds ominous! Any chance of a link please? Rehab is for quitters!!!

RR 2007 3.6 TDV8 Java Black *
RR 2007 3.6 TDV8 Zermatt silver *
RR 2000 P38 4.6 Met red *
Mercedes 300TE 4-Matic *
Jaguar 420 (1969) *
Nissan 300Z
Citroen XM 2.5TD X 6
Bentley Continental R
Hydrocon Highlander
Hydrocon Hamilton
Hydrocon Huntly
Am told the ones with a * are to be offered for sale! 😳

Departed
LR 1992 110 2.5TD
RR 2000 Holland & Holland 4.6 LPG
RR 4.2 Supercharged with LPG, Vogue SE 2007 Buckingham Blue
RR 2002 4.4 V8 Zambesi Silver

http://www.disco3.co.uk/gallery/displayima...&pos=2

Thanks Gazellio. Rehab is for quitters!!!

RR 2007 3.6 TDV8 Java Black *
RR 2007 3.6 TDV8 Zermatt silver *
RR 2000 P38 4.6 Met red *
Mercedes 300TE 4-Matic *
Jaguar 420 (1969) *
Nissan 300Z
Citroen XM 2.5TD X 6
Bentley Continental R
Hydrocon Highlander
Hydrocon Hamilton
Hydrocon Huntly
Am told the ones with a * are to be offered for sale! 😳

Departed
LR 1992 110 2.5TD
RR 2000 Holland & Holland 4.6 LPG
RR 4.2 Supercharged with LPG, Vogue SE 2007 Buckingham Blue
RR 2002 4.4 V8 Zambesi Silver

Dijit wrote:

Ok mine appears to have the diff lock. Any suggestions how to test this other than replace it?
It doesn't seem to show up as a fault on the iid.

Thanks

Sorry, been busy.

As others have said, the IIDTOOL should be able to do it. That's your best bet. Also, it is one of the checks that the car does on startup. So no errors on startup and you're probably good.

I think triggering a situation where diff lock is required will also do it, but is a lot harder in practice. I got the error once on a JLR track during a full cross axel obstacle. (Mine you, with the centre diff fine, the car's progress wasn't hurt. ) if you have easy access to a but if off-road course, that's certainly the most fun way to test it.