I made an observation over the past 24 hours. Yesterday we had a run out of 125 miles along fast A roads and motorways along with a few slower A roads due to speed restrictions. The stop/start more or less packed up about 4 weeks ago, which I put down to short journeys and the DPF filter not having chance to regenerate properly. So after the run I expected the S/S to function correctly. No, it didn't. Today I got back in the car and for once did not connect the phone to the USB. The first journey there was no S/S working but coming back home it functioned every time. As I was near the dealer I was going to get it in to have it looked at. When it started working again I decided not to book it in. The question here is because I was so near the dealer and the car was parked within a few hundred yards from the dealer for around 40 minutes. Now can the car electronically link to JLR near a dealer and be checked over?? I don't know. Can the phone actually be blocking any updating if the acceptance of connection to JLR is not granted? Really strange situation that the S/S works faultlessly for weeks on end then just packs up. I have kept the battery topped up fully with a CTEK charger, so it is not battery related. The car should have cleaned the DPF on the first part of the larger journey at 63 miles. The only other thing I can think of was that I had the aircon on all the time but switched it out this morning. In the past the aircon made no difference whatsoever as long as the battery and DPF were 100%. Any thoughts again on the subject??
Stop/Start again a few thoughts
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·I watched the dealer just connect the very large chargers to several cars in the showroom and saw that they connect it mainly to the battery terminals. Only once did I see one chap connect the earth to the earth post in the engine compartment. So as the car is under warranty I did the same and have done several times since. The CTek charger has electronics in it to enable safe charging, without disconnecting. Mine came with 2 cables of which one set were croc clips style and the other for permanent fixture to be bolted on the terminals. I gave mine a regen charge some time back and then a couple of weeks later another regen charge. Since then I just give it a top up charge if I haven't driven it for 3 days or more. This usually takes around 3 hours. I suspect that this is unecessary and is just what I do. The S/S has functioned flawlessly ever since. I put mine on normal battery and AGM as the batteries are AGM type ( Absorbant Gas Mat). The AGM batteries need regeneration to release hydrogen around 2x per year. I have the CTek MXS5.0. The Jaguar branded item is a CTek charger of lesser spec and can be permanently fitted to the car.51mes said:
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·Ian have a look at this for the better answer than I can give. It works in drive and sport but NOT paddle shift.Ian d said:
http://www.ownerinfo.jaguar.com/document/4N/2016/T23424/18377_en_GBR/proc/G1660254
Number 6 on the "why it won't work" list is interesting.Vespa said:
It mentions demand on the climate control system requires the engine to be running.
I remember a member posting on here about a chat with a techie who said that stop start won't work until the internal temp in the car has reached the temp set on the climate control system.
I would think that the car having to heat the car until it achieves the set temp is a demand and does need the engine to be running.
Might explain a few failures.........?
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Yes, I think 8 reasons why it starts again automatically and 9 reasons why it won't work at all must cause a lot of mistaken cries of 'Fault'. It's very complicated and that's why they called it 'Intelligent'. To my mind complicated means more chance of going wrong.
Exactly.richmond said:
There are so many variables with the thing that it's not surprising there are many suggestions of a fault when it's actually working (or not as is the case) within it's design parameters.
I went out shopping this morning.
On my screen I get an icon when it isn't available.
Unlike normal I left it on and noticed that whenever I came to a halt the logo would come up saying it wasn't available.
No battery issues or anything else but it seemed to be the temp in the car.
I had set the temp to a pretty cool 19 degrees and didn't use the aircon as it was a shortish journey and the old fashioned open a window "aircon" was enough but obviously kept the interior a little warmer than the set temp.
Presumably the difference in temperature (hot or cold) is enough to stop it working.
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·Well mine has eventually packed up completely now and no matter what I do it won't operate. So it is booked in on Friday for a health check of all systems. JTB00492V2 I will let you all know if it is sorted.
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·I have always got it working again but this time after 2 fast distance runs, nothing. I took all the variables into account and nothing should have affected it. No warnings were showing for any systems so I think that the health check of the systems will find the problem. I am a bit of a fanatic with my cars and if something is fitted it should work. I believe a wire in a plug in the the system can be dislodged.
I actually wonder if the battery is at fault, although no warnings indicate low charge.
I actually wonder if the battery is at fault, although no warnings indicate low charge.
I think a lot of start stop systems are going to pack up with the weather at this time of year.
Climate being on, heated screen, heated seats etc etc.
People will still think it's broken but with so many variables stopping it working I won't be surprised.
If you bear in mind it's just a computer (and therefore stupid) and all it knows is if the human switches something on which only works with the engine running then it's going to keep the engine running and not engage the stop start.
Personally I'm surprised it ever works at all.
:lol:
Climate being on, heated screen, heated seats etc etc.
People will still think it's broken but with so many variables stopping it working I won't be surprised.
If you bear in mind it's just a computer (and therefore stupid) and all it knows is if the human switches something on which only works with the engine running then it's going to keep the engine running and not engage the stop start.
Personally I'm surprised it ever works at all.
:lol:
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·You maybe right Phil, we'll see. It has never compltely packed up before and has always been cajoled back into action with a charge up but this time 2 long motorway blasts and a charge hasn't worked.
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Mine was in for service today and I asked them to replace the battery, after two previous failed attempts by them to get stop/start working regularly. They now have a bench test to determine whether the battery needs replacing but I was unable to leave the car with them long enough today for them to test and replace if required, given that the petrol engine would also need fuel settings to be reapplied. So it booked in for the test ln a couple of weeks time and they have also ordered a throttle pedal assembly because the engine is idling at 1000 revs instead of 700 revs, which is also deemed to be a possible influence.
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Please excuse my ignorance but I do very short journeys and like many other I have found that Stop/Start and remote start are no longer operating and it has been suggested that it is battery related, so I have read about CTek chargers that just clip onto the battery terminals in the boot, but reading the Jaguar handbook it says you must disconnect the battery as it could damage the electrics. Can anyone point me in the right direction please re the CTek chargers and connection.
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https://www.xeforums.co.uk/viewtopic.php?f=11&t=5351
Jaguarnewbe, there is another thread on this subject that discusses this subject and may be of interest.
Jaguarnewbe, there is another thread on this subject that discusses this subject and may be of interest.
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