[Guest]

700 crack open the champers :lol: :lol: :lol:

 

[Wright24]

Had issue with stop start and after reading the forum thought it was best to get the ctek charger. Worked a treat! Has been touch and go if it ever worked but always put that down to climate or that Bluetooth was in use. Once I ran the ctek charger which took about 6 hours to charge the stop start has worked perfectly so thank you to the forum for the suggestion! Have it booked in with jaguar garage to get the software updated as recommended. Currently running 3.2 and heard 3.4 is a lot faster and fixes an issue with charging but will cost £100 for the pleasure!

 

[Mike Rometer]

Like a lot of them, mine seems to have a mind of its own. It hasn't worked this week even after the long run from the South. However I have been taking note of the places that it should have worked and well over half of them are for a lot less than the required 7 secs to save fuel, so I therefore suspect its benefits are doubtful. It is going in for a small service on Monday so we'll see what the dealer suggests.

 

[Wright24]

Spoke too quickly it seems!! Was perfect after the ctek charge for 5 days and now back to the standard inconsistent behaviour! It's so frustrating for such a luxury car! I have the car booked in mid may to update software to latest version, il give it a full charge after that and see how that goes. If not I'm guessing fitting larger capacity battery in is the only solution?

 

[Pedro J]

I'm still in the process of finding out what my newly acquired xe will and will not do, and today I came to the conclusion that the stop/start doesn't work. Join the club I hear you say! Now my year old xe only has 1700 on the clock and I'm thinking that the battery may not be in the best of nick. I already own a ctek mxs 7 and from reading this thread it seems that doing a reconditioning charge would do no harm. So what I propose doing is connecting the charger to the battery rather than the under bonnet jump start terminals, without disconnecting the battery and doing the recon. My concern is not disconnecting the battery as, according to the ctek manual, the voltage is ramped up to 15.8v during the recon, although only at 1.5a. The last thing I want to do is damage the electrics. Am I safe to do the recon as I've stated?

 

[Wright24]

I ran the ctek msx 5 on AGM cycle when I did mine and was still connected to the car as I've heard various issues with battery disconnections and having to reset all sorts. As long as it has a good earth (fairly certain there is one in the boot well) I couldn't see it having any problems! I hope that this software update fixes a charging issue I read about where the battery monitor has the voltage as too low. What battery do you currently have installed? I'm running a 80Ah, certain it's the original and am wondering if this is just far too low capacity, any site including jaguar fit 90Ah minimum now! I'm sure my battery is the original so coming up to 4 years old it could be time for a swap soon anyway

 

[Guest]

I'm still in the process of finding out what my newly acquired xe will and will not do, and today I came to the conclusion that the stop/start doesn't work. Join the club I hear you say! Now my year old xe only has 1700 on the clock and I'm thinking that the battery may not be in the best of nick. I already own a ctek mxs 7 and from reading this thread it seems that doing a reconditioning charge would do no harm. So what I propose doing is connecting the charger to the battery rather than the under bonnet jump start terminals, without disconnecting the battery and doing the recon. My concern is not disconnecting the battery as, according to the ctek manual, the voltage is ramped up to 15.8v during the recon, although only at 1.5a. The last thing I want to do is damage the electrics. Am I safe to do the recon as I've stated?

PEDROJ connect the earth to a nut/bolt in the car boot floor not the -ve terminal. I have done it in the past but it can damage the battery control module.

 

[Guest]

Wright24, I am now using a new 90Ah battery and it works every time even with aircon on once the engine gets warm (not necessarily hot)

 

[BRC]

Got to confess and say I too was one of those who wanted their s/s problem resolved and in consequence it was when a new 80 amp/hr battery was fitted by Harwood's. Worked faultlessly from thereon in but I found (if I remembered) I was switching it off as soon as I had started the engine! Eventually I got tired of this required habit and through advice on this and the American XE forum I permanently disabled the s/s.
I have to say for me at least life is far better without s/s. If of course the MOT makes it mandatory for it to work if fitted, then I will have to put it back into service again.
I also like to think that whilst certain engine components are designed to survive s/s is there a possibility others are put under more stress than is reasonable especially if s/s kicks in many, many times in relatively short journeys. Whilst I have seen suggestions it (s/s) should normally activate only under certain required conditions mine worked constantly from the moment the engine was fired. My gut instincts tell me this is not a good feature when applied to a very cold engine.
On balance I'm now one of those rare creatures that is happy to live without s/s.

 

[PhilB]

I think this was mentioned before and I checked and cannot find any mention of the Stop/start system being part of the MOT test.
Latest version dated Sept 2018 here:

https://www.mot-testing.service.gov.uk/documents/manuals/class3457/

 

[Guest]

I think this was mentioned before and I checked and cannot find any mention of the Stop/start system being part of the MOT test.
Latest version dated Sept 2018 here:

https://www.mot-testing.service.gov.uk/documents/manuals/class3457/

As far as I am aware the S/S is NOT part of the MOT yet. Many other things have crept in this year though including a brake fluid test for moisture, so I don't think it will be long before S/S systems are part of the test.

 

[BevC]

Am I the only XE driver whose s/s continues to work or is it doing it just to be annoying. I started the car on Friday and got about 1/2 mile down the road, stopped at the road junction and it worked. It is particularly frustrating if I forget to switch it off when parking. Please make it stop!

 

[Gojira]

Mines still working

I'm happy with it, to be honest, but SWMBO has noticed that it is sometimes louder than others on restarts...

I -suspect- it depends on whether it can fire a compressed cylinder, or whether it has to turn the engine over to fire.

I think it has only stopped while maneuvering about twice in 1300 miles, but it restarts cleanlyevery time, so I possibly don't notice!

 

[Guest]

There is a very short delay from stopping and going into reverse where the S/S does not stop the engine. It takes a bit of time to judge it correctly otherwise it stops the engine incoveniently. It also does that if you take notice, when you stop. It dosen't immediately stop the engine as there is a slight pause. It's a case of getting used to it, similar to the conceived lag of the gearbox on quick stop to go acceleration. Either the box no longer does it or I have mastered no lag from a standing start that many were concerned about. ( S/S switched off)

 

[PhilB]

Am I the only XE driver whose s/s continues to work or is it doing it just to be annoying. I started the car on Friday and got about 1/2 mile down the road, stopped at the road junction and it worked. It is particularly frustrating if I forget to switch it off when parking. Please make it stop!

Nope.
MIne stopped working about a week after taking delivery.
But 20 months in a software update to the digital dash has somehow kicked it into life and now it works every time.
Very annoying as I got used to not having to turn it off!
Original battery on the car which has never been near a charger.
I appreciate that for some the battery seems to be the issue but in my case it looks like a software issue.

 

[Pedro J]

PEDROJ connect the earth to a nut/bolt in the car boot floor not the -ve terminal. I have done it in the past but it can damage the battery control module.

Yes, I was going to do that, but thanks for reminding me.

The manuals for the ctek mxs 7 and mxs 5 both say that the reconditioning mode is for wet cell batteries: "Recond option 15.8V/1.5A Use to return energy to the empty WET and Ca/Ca batteries." I think I'll play safe and just do the recharge on AGM mode and leave the recond mode well alone.

 

[147daytona]

Am I the only XE driver whose s/s continues to work or is it doing it just to be annoying. I started the car on Friday and got about 1/2 mile down the road, stopped at the road junction and it worked. It is particularly frustrating if I forget to switch it off when parking. Please make it stop!

No Bev, you're not. My 2017 XE does a lot of short journeys and still has the original 80ah battery fitted but if I forget to turn the s/s off, within 1/2 mile of leaving home, it works - much to my dismay as I hate s/s in any car I drive.

 

[Guest]

The possibilty of those that work and those that don't, maybe to do with manufacure date, fitting date and finally selling date and being put into use. My 80Ah battery was made in August 2014 and the car was registered to use in May 2015 but I got it in Oct 2015. For 14 months it may have been doing nothing but discharging to a point of no return, no matter how much recharging was being done. The question now is was your cars bought new to order with very little standing around and that is why they work fine all the time? Since fitting the new 90Ah battery made in Oct 2018 and fitted 28th Jan 2019, I have a perfectly operating stop/start. Now whether that is because it's very new from production or 90Ah instead of 80Ah is the question as it has operated in all weathers without fault. Those that have had 80Ah batteries fitted under warranty are also no longer having problems. (or most of them anyway) Has it always been a battery problem?

 

[PhilB]

The question now is was your cars bought new to order with very little standing around and that is why they work fine all the time? Since fitting the new 90Ah battery made in Oct 2018 and fitted 28th Jan 2019, I have a perfectly operating stop/start. Now whether that is because it's very new from production or 90Ah instead of 80Ah is the question as it has operated in all weathers without fault. Those that have had 80Ah batteries fitted under warranty are also no longer having problems. (or most of them anyway) Has it always been a battery problem?

Yes, mine was a brand new car with a new battery and the S/S stopped working within a week and didn't work for 20 months.
Now it works fine so I think we have to accept that software issues can also stop the S/S working as well.

 

[Bazzamf]

I had a new 80 Ah battery fitted under warranty several months ago and the S/S worked great for the first couple of months. I now charge the battery when the system stops working, which seems to keep it going for a up to a month at a time. From my own experience I would say that the answer is definitely a larger capacity battery is required.