Hi.

Not used my L405 for a year and a half, but got her out the other day and changed the battery's for new ones, but did leave the car with no battery for a few days - put new battery's on and fired her up, went for the MOT today and have the Transfer case judder, low speed turning both ways etc, used friends Snap on Modis Edge and checked the TC for codes came back with :

P080A-54 Clutch position is not learnt - Missing Calibration.

I guess as the RR was left for a few days with no battery fitted its lost it somehow?, has anyone else had this?, I will do the double flush again but no point unless i have some kind of calibration for the ECU to go on...as it sounds awful to say the least under there with no calibration at all in there!.

Can the IID tool re-calibrate the Transfer case, i guess its an "extra paid for feature" maybe?.

Or will my friends Snap-on Modis Edge have the function to re-calibrate it?.

Thanks for any help on this one, will be interesting to know if anyone else has had the same thing happen?.


 2014 L405 3.0 V6 Autobiography Santorini Black 49k

I had this exact error, albeit on a 4.2 SC, it ended up needing a new locking rear diff actuator motor fitting / calibrating in my case, but the calibration of the transfer box actuator is available in the standard menus of an iid tool  Jonathan

2007 Defender 90 XS Hardtop

You can perform the recalibration using the IID tool out of the box. It's not an extra paid for feature like a software update  Kev

2014 L405 RR Vogue SE 4.4 SDV8 in Corris Grey
2010 L320 RRS HSE 3.0 TDV6 in Stornoway Grey

There is a bug in the IID routine however. You can easily get around this by switching the engine back on as soon as it shuts off automatically during the procedure.

Pat at GAP is aware of the issue. Kev

2014 L405 RR Vogue SE 4.4 SDV8 in Corris Grey
2010 L320 RRS HSE 3.0 TDV6 in Stornoway Grey

JCW wrote:

I had this exact error, albeit on a 4.2 SC, it ended up needing a new locking rear diff actuator motor fitting / calibrating in my case, but the calibration of the transfer box actuator is available in the standard menus of an iid tool

knwatkins wrote:

You can perform the recalibration using the IID tool out of the box. It's not an extra paid for feature like a software update

Bear in mind the iid tool can both re-calibrate the transfer case actuator & apply the latest module software update (if needed) that GAP can provide on an ad hoc basis (Fastlane service, £30 I think).

I needed to do this for the rear diff actuator to resolve my issue.

As a suggestion, you could perhaps buy a used iid, use it to resolve this issue, then sell it on for likely the same amount, less the transfer fee which is £25 I think.

Just a thought  Jonathan

2007 Defender 90 XS Hardtop

Morning.

That's very true and a good point to mention, so thanks very much or that!.

So, the IID should be able to put back on the missing calibration for a start, then i can do the double flush like i have before, then finish with the software update to make sure its 100%.

I have had a look about for a used IID, also put a wanted ad on here for one. Hopefully someone trusted will reply back.

It would be the best option i think as i do have a small problem with my parking sensors after doing the 2020 conversion the P is just flashing (from memory four times) on the dash screen info. So it's a bad sensor somewhere and the IID would hopefully let me know what's what.

I would like to adjust my air suspension so it sits a little better on normal height.

I would also like to re-set the gearbox - learn.

I did need to tell the BMS that she had new battery's fitted but the Autel did that for me yesterday but would again have been helpful.

So, the RR will have to sit and wait until i have a IID, as i do not want to drive her about with all that juddering and noise from the TC, sounds and feels nasty!, I mean how does the Transfer box know what it's doing with out the calibration to tell it what it should be doing lol!?.

I remember when i had that before but it was only really the "pull away clonk" from the rear i was getting back then, I changed the TC oil only once and it went away...i never used the RR again after that to do the other flush!. I don't want to damage it any more than the 30 miles i did in it yesterday (MOT and back) when it's not necessary at the moment, I still have some of the IYK500010 oil (1.5ltrs left) so will order some more and do the flush again once i can get a IID and put the missing calibration back in!. Also have the oil for the F&R diffs ready to change out at the same time. 2014 L405 3.0 V6 Autobiography Santorini Black 49k

Hi,

I have the same problem with the judder. I did the double flush and I am wondering if I should purchase th IID tool to do the re-calibration. Did you purchase one and did it work or are you still having problems?

Cheers,
Colin.