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That one is the original superseded sensor. See my post #21 for a comparison of original and current sensors.
I took the part number off the 2-hole sensor in your picture (6W83-14B006-BD) and searched for it. I understood that the replacement sensor was 2 holes, and the original was one. Hence the misunderstanding
It's about 30 minutes in fact on a 2010+ X150. No nose-cone removal required, the actual dual impact sensors (which are the usual cause of the warnings) are accessed by simply removing the plastic shield over the top of the radiator. There are about 17 plastic screws, they screw the wrong way to unscrew so watch out for that. Buy some spares first, you will lose or wreck a couple.
A few notes from my experiences.
Don't bother cleaning contacts, it makes no difference. The connectors are good quality and fairly well sealed.
Don't worry about battery condition - at worst it will change the frequency of the warnings but they will not go away even if you replace it.
The original sensors fitted seem to have a finite life and after about 50K+ seem to become unreliable and/or super-sensitive. Although sealed, perhaps osmosis lets moisture in?
I have never had a problem with the main 'beam' sensor across the middle. In my experience the simple things are usually the cause of problems and in this system it is usually the accelerometers (impact sensors) - a known weak point.
B1005 fault code is left (nearside), B1004 is right (offside). The missing two digits after the code which most OBD readers don't display tell what kind of fault it is but if you need to replace anyway who cares?
I have replaced both of mine (2010 X150) in the last couple of years and paid no more than £20 each from ePay. These sensors are also fitted to Land Rovers so if you are careful, pick your donor vehicle carefully (a later year low-mileage write-off) or look for one with a pic of the actual item which shows a good condition sensor, make sure the suffix is a late one and matches yours or is later, you can get away without paying dealer prices (especially if you only want to replace one older type sensor). If you do that you will have an almost certain cure and if not, not much cash risked.
If you have to fit the newer version with an older one, fit a pair, mix and match is usually risky. Fitting with just one screw seems fine, don't bother drilling a second hole. The accelerometer seems designed for fore/aft impact deceleration so being at an angle does not seem to disturb it. N.B. this from anecdotal evidence, not personal experience, your risk but I would be happy to do it.
When you replace the shroud, just put half a dozen screws back in until you are happy the warnings have gone, then fit the remainder.
It's about 30 minutes in fact on a 2010+ X150. No nose-cone removal required, the actual dual impact sensors (which are the usual cause of the warnings) are accessed by simply removing the plastic shield over the top of the radiator. There are about 17 plastic screws, they screw the wrong way to unscrew so watch out for that. Buy some spares first, you will lose or wreck a couple.
Jima,
Thanks for this interesting detail description. Does this mean you were successful replacing the two left/right sensors from above? Ie. without need to jack the car up and remove the splash shield below the engine? That would be awesome.
If you refer to “the plastic shield over the top of the radiator”, do you mean the black plastic part that becomes visible under the very front part of the hood, when you open the hood?
Thanks for this interesting detail description. Does this mean you were successful replacing the two left/right sensors from above? Ie. without need to jack the car up and remove the splash shield below the engine
Yes indeed - never used a jack, never removed a splash shield. I'll get a pic and post it a bit later on.
Here you go. As I posted, Snoozy was a 2010MY so if it is different on yours sorry if I got your hopes up un-necessarily. These pics from Sparky, who has replaced Snoozy and is a 2015MY. Remove these screws and all those along the front part accessed from in front of the bonnet, remove the shroud and the sensors are revealed just underneath. Watch out for the direction of unscrewing - ISTR it is opposite to the normal.
This is a pic on the other forum I recently stumbled over (cf. https://www.jaguarforum.com/showthre...t=88608&page=3). In that other thread, the consensus was that these two sensors that are being pointed at by the screw drivers are NOT the crash impact sensors for the pedestrian system.
Although I must admit they very much look like the first gen impact sensors used on earlier cars.
From what I saw on my car, peeking through the lower radiator grill with an endoscope, it has the new gen sensors mounted behind the cross beam between upper and lower grill, further in front of the car (just out of sight on the left side in the pic above).
I'm not sure what MY that is, lots of the SC pipes taken away, but yes, that is what they look like. You can see the five holes along the beam that are some of the seventeen or so that attach the shroud. I can confirm that I had the warnings, the diagnostic codes (B1004 etc.) and upon replacement of those sensors the warnings and codes went away. That was an MY10 X150, I guess they may have moved them on later model years and we know they changed the sensors. If you want to be absolutely certain, read the code, pop the shroud off, swap the sensors over and see the diagnostic code change. I guess the warning will remain the same.
Thanks Jima. There must have been changes between the model years. I can otherwise not explain this. In the other thread linked they say that these two sensors sitting right under the upper radiator shroud are (also) accelerometers, but for the airbag system.
I occasionally get the DTC error message linked above for failure of the right side pedestrian sensor.
Those accelerometers at the top are part of the airbag system. The pedestrian impact accelerometers are bolted to the back of the bumper bar, and can be accessed from below by removing the radiator splash shield and front bumper air ducting.
Those accelerometers at the top are part of the airbag system. The pedestrian impact accelerometers are bolted to the back of the bumper bar, and can be accessed from below by removing the radiator splash shield and front bumper air ducting.
Thanks a lot for the clarification. Will get new pedestrian impact accelerometers and access the back of the bumper bar as set out here to exchange them.
Yep, he's right, I got it wrong. Sorry for posting incorrect information, folks. The ones at the top are the primary crash sensors, those at the bottom are the pedestrian sensors. I would swear that I changed them over when I first got the message and the diagnostic code changed from nearside to offside. Ter, I can confirm from the docs that the pedestrian sensors are not the same but look very similar. The pedestrian sensors are modified versions.
From the technical docs "Two accelerometers are mounted on the rear of the bumper beam. The accelerometers measure the amount of inertia when an impact occurs and send a signal to the control module. This signal is used by the control module to calculate the firing of the pedestrian protection system. The accelerometers are modified crash sensors. The sensors have a lower detection range than front/side crash sensors to enable them to detect lower level impacts and therefore assist in the object discrimination process."
Later this week I will be replacing the pps sensors. If you have any input on how to go about the sensor replacement procedure and accessing the sensors, any hints are much appreciated in this new thread: https://www.jaguarforums.com/forum/x...7/#post2112490
I have had a pedestrian sensor fault on my XK for a long time. Had it checked out and told front LH sensor was showing open circuit. Taken both front sensors off . Continental TEMIC 6521A4 6W83-14B006-BD are the reference numbers. There are some comments that range rover sensors are the same but the fixings are slightly different which is no problem as they are easy to get at by taking off the radiator cover. I have found two on E bay
RANGE ROVER SPORT L320 PAIR AIRBAG CRASH SENSOR 5H2Z-14B345-BA 09-13
£9 the pair so its was worth a punt! There actual number is :- FOMoCo 5H2Z-14B345-BA YD8000141 BPXJA Temic 0009403A6.
Havnt dared to fit them yet as I dont want to blow the bonnet as soon as the car goes over 30MPH
Anyone got any suggestions on how I can check if they are OK to use or a place to buy the correct ones at a sensible price as they do not come up on E bay as not many of these super cars were built.
07-23-2019, 07:52 AM
