[Guest]

Sadly, I think you have no option but to visit the dealer. I think, but am not 100% sure that there is a patch for the electronics for this issue, without the need to drain and refill, and replace parts unecessarily.

 

[Jay]

Yes, I had the same issue which was fixed simply by a software update and a re-priming of the system via diagnostic software.
No sensors or pump replacement, no draining of tank, and no cleaning of injector or anything.
Might be worth looking into that first if it's cheaper than the other options.
Mine was done by the JagAssist man-in-a-van as it was still in warranty.

I don't believe it was a software bug in the code as such, just that the parameters used to determine DEF quality were set too restrictively and were loosened up by the software update.
Also, I think that if the tank is overfilled then the system has issues reading the DEF sensor(s) and falls back to reporting invalid fluid. Something I only vaguely recall reading on a TSB somewhere.

 

[sdaspland]

Thanks for the reply, I think more than anything I begrudge going to jaguar to sort this.
I'd rather just use my normal garage, just not sure if this is something only jaguar can sort out?

 

[Guest]

Thanks for the reply, I think more than anything I begrudge going to jaguar to sort this.
I'd rather just use my normal garage, just not sure if this is something only jaguar can sort out?

With a lot of makes using Adblue the independant garage may be able to reset everything. No doubt it will be a Bosch system.

 

[sdaspland]

Thanks for the reply, I think more than anything I begrudge going to jaguar to sort this.
I'd rather just use my normal garage, just not sure if this is something only jaguar can sort out?

With a lot of makes using Adblue the independant garage may be able to reset everything. No doubt it will be a Bosch system.

Thank you, I will contact them, hopefully they can, I hate how franchise garages charge ridiculous amounts

 

[Guest]

Sadly it is to keep everything up to date with decor, tooling and all the training they get given to their techs. The local guy probably has a good range of equipment and a reasonable establishment but nowhere near the kit and overheads of the franchised garage.

 

[rdcars]

I recently had the dreaded Ad Blue quality warning and the count down running on my 2015 XE. This was not long after I had topped up the Ad Blue.
After doing some research on here I couldnt find any information for a fix on the the Ad Blue system, other than take the car to the dealer for a potentialy expensive repair and reset.

What I did find on here was a good Topix guide on how to drain the Ad Blue tank which was easier than I thought. It just involves removing the LHR wheel and wheel arch liner, and draining the system through the drain tube, before refilling with fresh Ad Blue.

While I had the car on axle stands I also removed the Ad Blue injector, (very quick job and only requires undoing one 4mm allen bolt) and was suprised how much crystilisation was on the injector and the exhaust hole was partially blocked with crystalised Ad Blue.

The crystalisation on the injector was removed using a spray bottle containing hot water, which disolved the crystalisation very quickly.
To unblock the hole on the exhaust, I simply used a screw to loosed up the Adblue while holding a hoover next to the exhaust hole to stop any Adblue residue falling into the exhaust.
Once reassembled the Adblue quality warning was still on, but at some point during the drive to work of about 25 miles the next day the Ad Blue quality warning went off.

This was over a month ago and 900 miles covered since, without the Ad Blue warning re-appearing.
Based on my experience, if you have this fault I would recommend checking the Ad Blue injector first - It takes longer to jack up the car and fit axle stands than it does to do the job.

Hope this helps someone else with a similar problem

 

[Guest]

Good info and thanks for sharing.

 

[BOBCDP]

Good info and thanks for sharing.

+1. Hopefully not, but this could be very useful in the future.

 

[MalcolmT]

Less of a problem - at the moment.
My XE (180 d) 2016 showed 2800 miles DEF remaining.
I topped up with a 3.5 litre (fresh bought) from Halfords, and didn't overfill.
Then did about 800 miles (no problems)
The car is STILL showing 2800 miles DEF remaining
Does this mean I have a problem about to rear its ugly wotsit?

 

[Guest]

Less of a problem - at the moment.
My XE (180 d) 2016 showed 2800 miles DEF remaining.
I topped up with a 3.5 litre (fresh bought) from Halfords, and didn't overfill.
Then did about 800 miles (no problems)
The car is STILL showing 2800 miles DEF remaining
Does this mean I have a problem about to rear its ugly wotsit?

No it is possibly just not ready to tell you the correct mileage at present as I doubt it is gradually reporting, more like it will alter every 100 miles or so.

 

[redcoatuk]

Hi rdcars

I was wondering where you found the Topix guide? Do you have a link?

VMT

Red

I recently had the dreaded Ad Blue quality warning and the count down running on my 2015 XE. This was not long after I had topped up the Ad Blue.
After doing some research on here I couldnt find any information for a fix on the the Ad Blue system, other than take the car to the dealer for a potentialy expensive repair and reset.

What I did find on here was a good Topix guide on how to drain the Ad Blue tank which was easier than I thought. It just involves removing the LHR wheel and wheel arch liner, and draining the system through the drain tube, before refilling with fresh Ad Blue.

While I had the car on axle stands I also removed the Ad Blue injector, (very quick job and only requires undoing one 4mm allen bolt) and was suprised how much crystilisation was on the injector and the exhaust hole was partially blocked with crystalised Ad Blue.

The crystalisation on the injector was removed using a spray bottle containing hot water, which disolved the crystalisation very quickly.
To unblock the hole on the exhaust, I simply used a screw to loosed up the Adblue while holding a hoover next to the exhaust hole to stop any Adblue residue falling into the exhaust.
Once reassembled the Adblue quality warning was still on, but at some point during the drive to work of about 25 miles the next day the Ad Blue quality warning went off.

This was over a month ago and 900 miles covered since, without the Ad Blue warning re-appearing.
Based on my experience, if you have this fault I would recommend checking the Ad Blue injector first - It takes longer to jack up the car and fit axle stands than it does to do the job.

Hope this helps someone else with a similar problem

 

[redcoatuk]

I had the warning come up 2 weeks ago. I was expecting fluid low as it was about that time. I normally top up my ad blue from local garage forecourt 5 litre cans. Instead the warning of poor quality etc. I immediately put 5 litres in, the warning stayed.

I searched the net, saw that a garage had the similar fault, said cleaned injector, re flashed engine management and it worked. I called them, they said it can be several things. Booked an appointment. That garage was miles away, didn't fancy using up my precious 512 but heyho.

In the meantime took it around to my local Jaguar handyman, he has limited software reader and plugged in. Few engine faults, but generic reader so he reset them. Fault stayed. He called a better specialist and off I went. 30 mins later, proper fault reader on my car and all reset. Topped up with his 'quality' ad blue but probably not to full. Fault remained.

Drove home 18 miles. Fault cleared as I drove home

So perhaps quality. Perhaps with Covid driving only locally with no blast on the highway the ad blue jet clogged. Perhaps the tank was low. Who knows.

So I advise, top your ad blue up to full. Small payment if it subsequently needs draining. Take to friendly software reader that will read and reset all codes. Take it for a blast down the motorway as only a jaguar can Then and only then, let Jaguar get their hands on it. Having said that, my jag man did say there was a recall out for this fault. Not read into that yet as garages are closed for Covid.

One last thing. As a key worker in the UK, Marshalls have a hotline for appointments in Oxford, Cambridge and Lincoln where their techs will have a look to keep the country rolling. Well done Marshalls!!

 

[RoJo]

I'm not sure there is such a thing as better quality Adblue. Fresher certainly, but it all has to conform to the same standard. When I had my diesel, I made sure to only fill the tank to 80%, and if I ever had an issue I would have popped of the injector as a first step in diagnosis. Had the car 14 months (13k miles) with no probs, and part ex'd for my current Xe.

 

[BOBCDP]

So I advise, top your ad blue up to full.

I'm afraid that is very bad advice and I base that statement on members experience on this forum over the past few years.
The best advice is ON NO ACCOUNT fIll the tank right up.

I'm not sure there is such a thing as better quality Adblue. Fresher certainly, but it all has to conform to the same standard. When I had my diesel, I made sure to only fill the tank to 80%, and if I ever had an issue I would have popped of the injector as a first step in diagnosis. Had the car 14 months (13k miles) with no probs, and part ex'd for my current Xe.

It does seem pretty random as far as problems are concerned but I totally agree with Robs comments. Always use fresh Adblue and never fill the tank.

 

[Indianajons]

[/quote]

It does seem pretty random as far as problems are concerned but I totally agree with Robs comments. Always use fresh Adblue and never fill the tank.
[/quote]

And if you do have an 'adblue quality' warning, clean the injector before doing anything else... particularly if you have one of the higher dosage models

 

[Guest]

Well I am 5 years into my car now and used my methods already mentioned several times and never had any problems whatsoever. Looking after the bulk supply on one tub finished last year and now on my second 10 litre tub using my filling methods must have some effect.

 

[Mikeyjd]

My car came up with a warning saying about 1000 miles left. I topped it up with a 4 litre bottle of ad blue and it cleared straight away. I put another 4 litre is the next day for good measure. I know it will take about 12 litres but I would rather under fill it that overfill it. It seems there are quite a few glitches with the ad blue messages.

 

[Deacsleeds]

Hi all had the incorrect quality issue yesterday with the mileage count down.

I havent driven much recently maybe the odd trip to the supermarket but no where else

Ive extended warranty and Jag assit came out and helped.

Vehicle's Mileage

40,111

How we assisted

Incorrect diesel exhaust fluid quality detected. NOx exceedance P2BA9-00/92. Cleared diagnostic trouble codes stored. Checked fluid level-5.6litres. Reset selective catalyst reduction quality monitor. Shutdown for 10 minutes. powertrain control module already at latest level. Requires smoke test,injector dosing test and fluid test. Customer booking into Farnell JLR Leeds.

Anyone else had this and know if its covered or if its worth going to jag?

 

[RoJo]

There's a whole bunch of threads on that very subject!

If you go down the official Jaguar warranty route, be very clear to the dealer that you expect them to find and repair the issue. Do not let them get away with saying that the wrong DEF has been put in, and charging you a fortune as some dealers have been known to do.

If it were me, I'd get under the car and inspect the DEF injector. The only tool you'll need once lifted would be a 4mm allen key.