Thx - yes had been wondering about that.. and also checked it from both underneath(cables and movement - and from the top.. ..no success.. and no signs before the BANG happened...

 

It seems my earlier point was missed.
U0401 has 3 sub categories (sub codes). Your reader is not exposing them.
Moreover, the invalid data (for example, brake fluid pressure) will have 3 root causes…. the module is wrong, bad or your reader is inaccurately reporting the issue.
And as its an ‘07, I wouldn’t be surprised if the ABS sensor needs maintenance.
With so many unrelated subsystems throwing codes, the workshop manual is clear: essentially start fresh.

So, 1, disconnect THAT code reader. Something is not right.
2, perform a system reset by disconnecting the negative lead to the battery and touch the positive post with it. If this worries you, disconnect both leads and touch them together.
3, Before we go further, have any of the modules been changed of late? Has any wiring been touched? You mention the airbags…
4, If so, confirm module replaced is correct for this car.
5, If not, the root of these issues is the ECM. Confirm relay and fuse box and connections. Sometimes, A hairline crack in a fuse is very hard to see.
6,
7, confirm connectivity. Has the CAN bus been touched?
8, once reconnected, and connections cleaned and secure, then reconnect battery.
9, DO NOT USE THIS CODE READER
10, sit in drivers seat and close door, DO NOT DEPRESS BRAKE PEDAL.
11, Press and release the start button. Wait for all dings and chimes to subside. If there are only 2 dings, there is still an issue at play. Go back to the beginning.
12, if there are 5+ dings, hold start button down then depress brake pedal.
13, if there is no start, use a code reader able to read JLR codes and collect the list.
14 if engine starts, go for a 20 km test drive. once back in the garage, shut engine off, ignition on, collect codes.

 

Haven’t you filled up that new garage with free cars yet?

 

@kenbg60
If you inadvertently pump the brake pedal, it will feel high and rock hard. The high pedal makes it difficult to make contact with the starter switch, so you'll have to stand on the brake pedal with both feet and push it as hard as you can when you press the START button.

The simple solution is to press the START button BEFORE you step on the brake pedal.

Note that other manufacturers require that you step on the brake pedal before you press the START button. Jaguar works either way, but I find that my car starts much quicker when I press the START button before stepping on the brake pedal.

This was previously discussed. See: https://www.jaguarforums.com/forum/x...se-time-57460/

Your car should sit overnight before trying to start it by pressing the START button first. Remember to not step on the brake pedal when you get into the car.

Good luck, and let us know if it worked.

Stuart

 

Thank you Guy - yes i missed that previous post - SORRY... :-/
It was the amount of unrelated that annoyed me.. and totally.. hence the decision to go back start over and do the "take pic" and post that one."

Thank ypu for the detailed respons - really apprecated - and i will right now reply to the point for point.
1 - I will do that - for info it was a TEXA and also a Launch V Pro + (latest version ) TEXA is the one recommended(demanded lol) by the government if you want to be doing annual MOT tests.. - but taken off now.
2. tried that - but pob not "hard" enough - will try again
3. no no module has ever been replaced - i have known the car from almost new(personally) and have also full history from the first two owners) - airbags is bc the clock spring has a fault - prob broken - but airbag(driver) is switched off due to the fact that a back/neck injury has caused no normal seat belt usage.
5. thought of that and admit - checked fuses - but also admit did NOT take them out and replace with new - only checked for function with testlamp - will change them - not have had the relay out as everythign else works
6 ?
7 CAN bus not been touched - sorry but when saying connectivity - do you mean TO/FROM the canbus unit? (location? just to be sure i find the right onw - and yes NOT going to Jaguar dealer as they are completely cra.. those few in this part of the country ravels 200km for regular service INTO Germany..)
8. will do again incl. earthpoints in engineroom,
10.. might have done that with door open.. will do as you say!
11. will do
12. if this.. will do as stated
13 - do you recommend any specific or will the SSD V165 (searched and found a few on ebay(as said Jaguar is something partly not known and at aut dealers its a joke here in DK)
14. hope i get to this point -

will let you know..and thank you so much for the direct and pointed out attempt :-)

 

This has been very good advice for me. I used to think something was broken in my car before I realised it was the starter switch not being depressed since I had pumped the brake pedal.

 

Ken, yes, you need two things to help you along. The first is an OBD tool that can read jlr codes. I use sdd, but before I haul that out I use the autel ap200 with the jlr download. Cheap at $70 from Amazon, it has numerous specific Jaguar tests for the XK, complete jlr code reading and about 75 data points to gather information. Second you need the appropriate service manual that references most of the jlr codes. We used to have these manuals posted in the Forum, but they're unable to do so at this stage. I have PDFs of them and can send you either the 4.2 or the 5.0 version if you don't have them. Thanks, panthera

 

You can download the manual here free of charge:

http://www.jagrepair.com/images/Auto...XKworkshop.pdf

And the electrical diagrams:

http://www.jagrepair.com/images/Auto...79toB09096.pdf

 

Panthera999 - thank you so much :-) just purchased the SSD from the Uk.. hoping to get it soon - then test/and learn to use it :-p - as said i also have the TEXA and Launch V+Pro X431 2024 - and they are usually brilliant(also TEXA is the one the government demands we use for MOT..) but.. both do only give the letter and 4 digit - not the remaining 2 after the "-" as i just discovered from the answer from Guy - so.. hoping this will bring more light to the solution :-) thanks also for the comment about the manuals- i do have the workshop and maintenance manua - so looking int hose too.. not giving up.. had all sort of fun cars/exotics.. but this one.. been a dream sinc ei saw it at launch on 2005..

 

Thank you for the links Sean - i have the manual.. older version - but not the electrical diagrams.. hoep they are the same for the 2007 models (mine is vin 9383) nice to have.. so thanks :-)

 

They are different. Here is a link for your MY:

http://www.jagrepair.com/images/Auto...97toB20074.pdf

 

Once the reset is completed and the ignition is cycled precisely once (as per my directions above), Please read the thrown codes and post here. The jury is still out. The fix could be something as simple a grounding point, oxidized or corroded connector…
But I need to see the list.

 

Thank you Guy - will do - having a phchat with mechanics next week/hope the SSD has arrived so we can get full codes :-)

 

finally - some - hopefully light at the near? end of the tunnel - using your advice and when the SSD arrived we started it up.. went to the point where SDD automatically wanted to update from ver 164 - to 165.. bummer.. had it done last week to 165 - and got the extended code of U041500 switched the brake position switch - still gave the same.. went on to next part of the generics.. the extreme high internal presure which is just not valid.. 10xxx bar in a thin alublock..
Found the exact replacement in the US - swapped and the internal code was gone.. still cant start as not accepting the VIN stored in the new"used" block but got it cleared yesterday - now "fighting" to get the codes out of the defect old ABS_block (the ICU part is the fault) - when that is done.. we will try again to add these to the new ABS-module and see if it will perform as superby as the original did.

Will get back to you Guy when that stage has been reached :-p

 

Can you message me those pdf manuals please? would be useful - Cheers, Eric

 

I got those manuals from Sean W above, that should do that trick - thanks guys

 

Dud ABS module, strange....

 

Hello Guy -- and others with insight of using JLR SDD - just had it updated to version 166 -
"new" used ABS-module(complete unit) has been cleared of old VIN - and car is no longer showing the extreme high internal ABS pressure of 10xxx bar - so thats good
- but.. when trying to start msg is that VINs do not match - with the new module being cleaned - can anyone lead us how to - by using JLR SDD ver 166 how to either copy the codes from the old faulty abs-unit and/or simply code the "new" used abs-module to the car so we hopefully can start it and search for possbly more faultcodes??

DAMN I MISS DRIVING THAT CAT :-p

 

I have seen a bulletin somewhere

 

I take no responsibility for a borked Jag....

http://jagrepair.com/images/TSB/TSB2...ID%20block.pdf