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Interesting that Jaguar say, "typical of injectors currently being replaced and returned via warranty and when tested are no fault found." It seems to suggest further use should clean of the crystallisation but it makes you wonder whether it really does. I have to say my experience of urea albeit in power station and incinerator facilities is that when it exposes to air it crystalises and in practice the crystals do not readily dissolve. The urea might be a different grade to that used on our cars but the fact people are having to refer to their dealers to resolve an injector problem that should be self resolved might suggest otherwise.
 
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I suppose only Jaguar cars are affected?? The parts are probably exactly the same as on nearly all EU made cars. So far I have no problems with Adblue possibly because I keep it topped up.
 

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Vespa said:
I suppose only Jaguar cars are affected?? The parts are probably exactly the same as on nearly all EU made cars. So far I have no problems with Adblue possibly because I keep it topped up.
Yes it does seem to be a random thing with some cars never experiencing the problem whilst others are not so fortunate. I only ever topped mine up once albeit with 10 litres in one fill and the warning extinguished immediately. Really that should be a common and anticipated experience. I should have thought the software will have set parameters to acknowledge whether there is or is not a problem and whether these are set in stone or can possibly have some margin for error may explain why some are impacted and others are not. It woiuld be great to play with the software and get to know the inner workings but sadly Jaguar do seem to have (and understandably) sown that up good and proper!
 
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The thing with later cars are that seem to dose at double the rate. Mine states that 1000 miles per litre and later cars 500 miles per litre. Is that having an effect on the injectors if any?
 

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Vespa said:
The thing with later cars are that seem to dose at double the rate. Mine states that 1000 miles per litre and later cars 500 miles per litre. Is that having an effect on the injectors if any?
Could be that at 500 miles per litre it's actually overdosing and leaving unreacted urea in the exhaust to contaminate the sensor
 

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I stand to be corrected but I don't recall this problem being reported on the forum on earlier cars where the useage was 1000 miles/litre.

I've only had the dashboard warning once so far at 19500 miles about 12 months ago. I just dumped 10 litres in and the warning cleared. I did buy another 10 litres just after that when I saw it at a good price but I wasn't aware then about the 18 month shelf life. When I get the next warning, to be on the safe side I will buy new. Not worth taking the chance when the stuff is cheap anyway.

I don't do much mileage now so every week or two, unless I have done a decent trip, I make sure the car has a steady motorway run at 60 -70 mph for at least 25 miles. Hopefully this will prevent clogging up of the various things diesels seem to be prone to when they are only used for short journeys.
 

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This happened to me today😢 took it to a Jaguar specialist in Milton Keynes, they weren't able to resolve it today and I have booked it in for further investigation. They weren't familiar with the message that I had, and I'm wondering should I go to a main agent?
Just one other point I did receive a recall stating that the model didn't meet the correct emissions reading. I didn't take the car thinking that I would lose performance if they reset the emissions. I'm wondering now if I had the recall done this message would clear, any thoughts please?
 
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This seems to be an issue that is being caused by Covid 19 and lack of driving. The injector will be clogging and maybe your DEF Adblue needs topping up. Then a bit of an Italian tune up with throttle on and off. that just MAY sort it. Do NOT overfill.
 

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Perhaps the specialist could disconnect the sensor/injector and clean it with hot water etc as a member has done on here previously.
 
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PhilB said:
Perhaps the specialist could disconnect the sensor/injector and clean it with hot water etc as a member has done on here previously.
If the worse came to the worse that is all that needs doing. Adblue will not dissolve in cold water as I found out cleaning my Redex Adblue bottle for use as a top up tool. The reason I suggest an Itallian tune up is that the biggest dose is on opening the throttle and my theory is that it will be hot enough to eventually "wash" off any residue. I keep mine topped up and so far not had any problems in 5 years. Yes it does use the stuff, just in case anyone thinks it is not functioning.
 

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I have had my xe r sport 2016 for 6 months. I have had the warning 3 times. The first and second were due to a faulty sensor allegedly, whilst the 3rd was a faulty cat costing over £1500. Not covered by warranty. Be aware.
 

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MANAGEMENT WARNING - NO ENGINE RESTART IN …… MILES. INCORRECT DIESEL EXHAUST FLUID QUALITY DETECTED.
I have had this problem 12 times in the last year with my 16 plate Jaguar and am still no nearer to finding a solution,
Aylesbury Jaguar have tried to fix the issue five times this year including draining, refitting, pump calibration, prime and pressure tests, resetting adaptive valves and on my last visit a whole new adblue tank and the problem has still come back after a month. I need some advice, they now want more money to have it diagnosed again for the sixth time, any advice please. Many Thanks
 

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Red80 said:
MANAGEMENT WARNING - NO ENGINE RESTART IN …… MILES. INCORRECT DIESEL EXHAUST FLUID QUALITY DETECTED.
I have had this problem 12 times in the last year with my 16 plate Jaguar and am still no nearer to finding a solution,
Aylesbury Jaguar have tried to fix the issue five times this year including draining, refitting, pump calibration, prime and pressure tests, resetting adaptive valves and on my last visit a whole new adblue tank and the problem has still come back after a month. I need some advice, they now want more money to have it diagnosed again for the sixth time, any advice please. Many Thanks
Exhaust sensors or crystallisation on adblue injectors.
Lots of threads here, try searching for incorrect Dec or adblue will give lots of results.
 

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BOBCDP said:
I don't do much mileage now so every week or two, unless I have done a decent trip, I make sure the car has a steady motorway run at 60 -70 mph for at least 25 miles. Hopefully this will prevent clogging up of the various things diesels seem to be prone to when they are only used for short journeys.
I thought the idea of owning a diesel was cheaper running costs because of the higher fuel economy but taking into account that you're deliberately having to make unnecessary journeys, as well as the higher fuel cost, having to add the adblue and all the problems people seem to be getting, I'm not sure for a low mileage user that it's really worth having a diesel.
 

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147daytona said:
BOBCDP said:
I don't do much mileage now so every week or two, unless I have done a decent trip, I make sure the car has a steady motorway run at 60 -70 mph for at least 25 miles. Hopefully this will prevent clogging up of the various things diesels seem to be prone to when they are only used for short journeys.
I thought the idea of owning a diesel was cheaper running costs because of the higher fuel economy but taking into account that you're deliberately having to make unnecessary journeys, as well as the higher fuel cost, having to add the adblue and all the problems people seem to be getting, I'm not sure for a low mileage user that it's really worth having a diesel.
When I first bought the the 180D, I was unaware of the possible problems with newer diesels. Great fuel consumption and only £30 road tax were certainly a plus factor before the government suddenly put the boot in and reduced the value of every diesel car on the road even the very clean Euro 6 models like the XE.

I had Ford diesels as company cars for many years with no problems at all. It was only later that I became aware of potential troubles which seem to only have occured after the introduction of Adblue. Reading about these and the best thing to do to try and prevent problems was the reason I started regular motoway runs. It's always difficult to know how widespread the whole issue is with Adblue, overfilling, quality etc etc as by the very nature of forums, people often come on just to have a moan then you never hear from them again, so it might look as if it's a much bigger problem than is actually the case. I never had any of these Adblue related issues with my 180D and topping up every 10.000 miles was fine.

However I think you are absolutely right about low mileage users now being better off with petrol. Can't yet see electric cars as a good long term bet. I would hate to own one that needed a new battery. Imagine going in to Kwik Fit and they tell you the battery is nackered and they have them on special offer for £5000 or whatever horrendous figure they will cost to replace. That's why I decided to go petrol when I bought a newer XE.
 

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Yea its a joke of a system, but has an easy fix get it deleted off the system no more worries or costs, just a software change no hardware remove or anything and can be turned back on with Jag Update if needed. 😆😎
 

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Hi. I did exactly the same last weekend. I knew that my adblue was not substandard as it is the same type I have used since I bought the car and hadn't topped it up for about 3 months. 5 Litres of Halfords DEF didn't remove the fault message. Now i'm down to about 300 miles I have started to worry and contacted a JLR main dealer. They want £150 to run the diagnostics before anything else. My car is 3 years and 5 months old, bought as an approved car just over two years ago so it's out of warranty but as this is a known issue with these cars I would have hoped JLR would take ownership of the problem and compensate us for the costs.
Of course, there is always the chance that there is a fault of some sort so I can't blame the dealer for running the diagnostics but think it very unfair for us to have to pay to correct a fault in the software if that proves to be the problem.
Happened to me this week, , twice since buying Jag XF in September. My mechanic said sell it, he sees them all the time, all 'Jag DEF systems will cost you a fortune' , Jaguar won't take ownership and warrantee companies don't payout. So after buying British made Jag, first time in 40 years , I need to unload it. Mechanic said I don't do enough mileage. What a shame, most comfortable car I ever had , ( had BMW's for 40 years)
 

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Yea its a joke of a system, but has an easy fix get it deleted off the system no more worries or costs, just a software change no hardware remove or anything and can be turned back on with Jag Update if needed. 😆😎
How, exactly, do you switch it off?
 
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