Hi, I have an 07 supercharged xkr... Awesome!
But as the title describes, I have an intermittent fault throwing up the pedestrian system fault error with red triangle. Done a search here to no avail.

It will clear on restarting most times, and comes on randomly either from start or while driving.
Theyve cleared the fault log. ,reset the ecu, but the dealer says both sensors have a hard fault non reparable- you buy new ones! ka Ching $$
I can't accept that as its intermittent.... And they cant explain how both sensors have an apparent hard fault-err.. sometimes.
Any help much appreciated

 

If memory serves, there was a post sometime back by one of the regular Jag techs speaking to a wire harness in the front bumper area that in some way gets worn due to its location; that issue wasn't your particular problem, but it seems possible that your problem may be caused by something similar...

I would agree that an "intermittent" problem will likely not be the sensors themselves, especially both at the same time; sort of like two light bulbs failing at the exact same time...possible but not likely.

Anyway, this does sound more like a connector or loose/worn wiring...

 

Dang, someone has a good memory. I dont know about ped system and how/where is wired. We dont have it in the us. But the wiring issue across the front behind the bumper cover is and issue. Ide pull the front bumper cover to check

 

i'd have a word with you dealer again ,there is a tsb for the pedestrian system ,to deal with your problems ,

as to the wiring fault,i think you will find that the front bumper wiring is a s type fault ,i've not heard of any wiring problems with the xk,

but the dealer sorted out my pedestrian system fault very quickly.

 

really, ive never heard of front bumper s type wiring issues. The issue on later xk 150's is the harness is held to the back of the bumper cover with tape. And we all know adhesive tape sticks forever. But in the rare event that it does fail, the harness for the tpms sensors etc fails right down between the metal of the actuall bumper and the bumper cover. Give it time and it chaffes goes short to ground and many times creats intermittent issues. Now like i said i dont work on row cars only us. So i caouldnt say from experiance about a ped system. Wiring issue on xk's sure

 

thanks brutal ,like i said never come across this with the x150 ,this is the s type problem cause by using a grip device to pull in the harness when the car was built ,

Jaguar Forum.co.uk • View topic - Wiring harness corrosion behind front bumper

 

i would print this off and take it to the dealers


TECHNICAL SERVICE BULLETIN

reissue No.JTB00091v2/2008
11 March 2008
Circulate to: Service Manager Parts Manager Warranty Administrator Service Reception Technicians

© Jaguar

All rights reserved.

This reissue replaces all previous versions. Please destroy all previous versions. Only refer to the electronic version of this TSB in GTR.

This bulletin supersedes TSB JTB00091/2008 dated 28 February 2008, which should either be destroyed or clearly marked to show it is no longer valid (e.g. with a line across the page). Only refer to the electronic version of this TSB in GTR.

Subject/Concern: 'Check Pedestrian System' Displayed in the IP
Model:
The New XK - All With Pedestrian Impact System
VIN Range: B00001 Onwards
Markets: All Except NAS
Section: 501-00
Summary
Customer reports permanent message 'Check Pedestrian System' displayed in the instrument pack (IP), with DTC U3000-66 or B1006-92 stored detailing the non-deployment memory in the pedestrian protection module has reached maximum stored events.

This version has been issued for a change in Section from 401 to 501.

Cause: Non-deployment events logging at low speeds and dealers unable to clear DTCs, resulting in module replacement. Suggested Customer Concern Code - S40.

Action: Should a customer express concern, configure the Impact classification system. Follow the Service Instruction outlined below.

Repair procedures are under constant review, and therefore times are subject to change; those quoted here must be taken as guidance only. Always refer to DDW to obtain the latest repair time.

Labor Time
Operation Description Operation No. Time
Configure the Impact classification system 86.99.74 0.2 hours
Repair/Claim Coding
Causal Part: C2P 14924
ACES Condition Code: 42
Service Instruction

1. This procedure requires IDS DVD111 with Patch file 3 loaded or later.

Connect a Midtronic battery conditioner/power supply to the vehicle.

2. Connect IDS to the vehicle and begin a new diagnostic session, by entering the correct VIN for the current vehicle.

3. Follow the IDS prompts to read the vehicle configuration.

4. When prompted 'Do you wish to read diagnostic trouble codes?', select 'NO and then press 'tick' to continue.

5. When the 'Content Model' is displayed select 'Vehicle Configuration' tab.

6. Select 'Module Programming' from the 'Vehicle Configuration' menu.

7. Select from the menu 'Configure existing module'.

8. From the drop down menu select 'Impact classification system'. Press 'tick' to continue.

9. Follow all on-screen instructions to complete this task.

10. When the task is completed, exit the current session.

11. Disconnect IDS and the battery charger/power supply.

 

Thanks Dave, I was aware of that, but we just dont see that in NON SALTED TEXAS
But this again shows why I like to know where people are located because it does matter in some instances. We used to get alot of Stype window regulator breakages, but yet that TSB only covered southern states as Jaguar said it was not an issue up North in colder climates.
Now here in humid Texas home of falling headliners and tape that doesnt stick long. We do see more of the XK bumper cover harness issues. That tape just doesnt still for too long

 

Wow! great responses - thank you all so much. I will firstly take a look at the front of the car - sounds simple enough (Doh !- opened the bonnet - maybe not !) if that fails - will take the tsb to the dealer. A rubbing harness sounds reasonable though - as ive noted sometimes it occurs on...shall we say "agressive acceleration" Will keep you posted.

 

Quick update: took a look at the sensors and wiring to them- they're not right at the front of the car- but on the front of the upper cross member in front of the radiator cowl (I hope) no sign of wear on loom, but I disconnected and cleaned both connectors- went a few days without error ....then ... You guessed it...
So- I'm going to the dealer with the bulletin supplied above- will advise outcome.

 

hi there,
just wondering how you got on when you went to your dealer. I have just entered this forum as I have exactly the same problem with my xkr & the dealer wants me to buy a new sensor which is £500. Not so keen & not sure if the sensor is the problem.

 

Hi, actually, no- the dealer said all the recalls noted were "not relevant" and it's not sorted. FYI this error show BOTH front sensors failing - with a hard fault, which then can be cleared ... Which clearly indicates its not the sensors unless by some miracle a "hard" failure on both sensors can happen, then they can heal themselves. I'm upgrading the car regardless - but it is disappointing as apart from this fault, the car is the best I've owned.

 

any updates? did you replace them?

 

My wife rarely uses my XKR, but she went out in it this morning and when it came back she told me the Pedestrian warning indicator was coming on.

Tried starting the car a few times in the hope it might "reset" and looked under the bonnet, but it is constantly showing the warning when starting the engine.

Yet another issue with my 2007 Jag

When I asked her how she had broken it (that didn't go down very well) she did admit she had driven over some "low" speed bumps, but very slowly.

I can imagine this type of thing might result in "loose" connections being made worse.

Unfortunately, there's no feedback on this thread so I'll have to continue Googling. It's due a 120,000 mile service in 3 weeks so will probably have it looked at then if I don't find any obvious issue that can be resolved simply.

 

This is still a WiP and granted a 2010 XK Supercharged but I started to get this message a few weeks ago. I invested in a battery tester and a diagnostic reader and replaced the battery (it was the 2010 original, not too shabby to be still working after all this time but cranking amps down which is not what you want when starting a Jag) but the DTC was still showing intermittently. The diagnostic showed a B1004 fault (front right impact sensor) so I removed the radiator shroud, removed the RH sensor and cleaned the very tarnished looking pins and plug with switch cleaner and replaced. Cleared the DTC codes and four days now without errors (knocks wood) so we'll see. I opted not to disturb the LH sensor.

BTW contrary to what I have seen posted somewhere on this forum you can do this from on top on the S/C models but watch out for those pesky plastic blind rivets holding the radiator shroud on. When you pop them out one or two are bound to disappear into the bowls of the engine!

 

Yes, I've found a few posts suggesting this could be caused by a failing battery, however the battery was changed a couple of years ago, so is relatively new.
The car also gets driven 50 miles per day and I haven't noticed any of the other usual battery related issues.

Fortunately, the warning didn't come on this morning and has stayed off during my drive to work. Fingers crossed it will stay off and is like all the other "false" warnings that seem to occur on this car, such as telling me cruise control has been disabled etc.

At 11 years old it may just be suffering from early dementia

 

Gents, this is a common fault, the units slowly degrade and will need replacing. Mine seemed worse in warm weather for whatever reason but the main issue is if you don't replace them and they cause the system to fire it wrecks your bonnet and gets very expensive.

The reason there's no feedback on here is because they aren't fitted to the American vehicles as they are only required for UK (or maybe EU?) law. If you look on the UK forum there is plenty of info. about this.

Sorry to be the bearer of bad news, from memory it cost about £500 to get both replaced at a reputable indie.

 

Just getting mine done - one sensor is faulty, but my indy specialist recommends doing both together because it's more cost-effective than waiting for the second one to fail. They quoted £340 for the pair (plus labour, but I'm getting a bunch of stuff done so it will all be bundled together).

 

Well, bad news, the error message came back today so the contact cleaning seems not to have worked. I would have to say that this morning was a series of stop/starts so battery voltage might still be an issue but my gut feel says - no.

It may well be that they deteriorate gradually, they are after all right at the front of the vehicle, however given that from the schematics they are driven from forward-biased diodes from the airbag circuitry I would have to seriously doubt that they could be contributory to fires. What say you, Jockster, can you justify this allegation?

Anyhoo, not quite having complete confidence in the 'tarnished contact' theory I already ordered a used replacement from a low-mileage breaker Land Rover (GBP 14, US$ 20) which uses exactly the same Ford part (5H2Z-14A686-BA, sub-code 00009400A6) which I will fit in due course. It is a simple DIY job, no need to drop GBP 500 (US$ 711) on an Indie. You will need a code reader to clear the codes of course. I use an iCarsoft LRII.

Final thought - if you are happy to buy new - replace both. If not, I can't see the justification for replacing both. It's not a long or difficult job, replace the second if it causes a problem. FYI Snoozy has about 65K on the clock.

 

In case it is of any use, a pic of my front RH impact sensor: