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Discussion Starter · #1 ·
Just realised I'm coming to the end of my Jaguar Approved warranty. The car has been coming up with the above message maybe 80% of the time I start the car over the last few months. It goes off as soon as the engine starts. As my warranty is running out, I've booked it in my local Jaguar dealer next week.

I'm just wondering if it's worth it? The guy on the phone said 'It'll likely be a battery problem', and the battery isnt covered in the warranty, so that's gonna cost me. The thing is, this message has been appearing for at least 6 months and the car never fails to start. I've got a feeling it's a mistake that the message is showing, rather than a battery fault.

What do you think about this? If it's any help, the stop/start also hasn't worked once for the last six months and I regularly do long journeys. Drove 80 miles on Monday and stop/start never once kicked in.

Just worried about paying for a new battery thru Jaguar as that's what they'll insist is wrong, that I'm not sure I actually need.

Any help appreciated
 

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Do you have a battery specialist locally? They'll probably test it for free, I know the one near here does.
 
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I think you have solved your own problem. I see your car is a 2015 model and is probably on its original battery, if so it has not done bad. The three minute warning is not uncommon even on a new car and shuts everything down to prevent you being unable to start the car next time. The stop start has many factors governing it and at this time of year when the air con is working full belt, the system may decide that there is already too much power being consumed to risk stopping the engine. Does your car have one or two batteries, either of them could be faulty. I would suggest getting them checked by a battery supplier rather than a main dealer. If they do need replacing it will be far less expensive that the main dealer.
 
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Discussion Starter · #4 ·
Thanks. Yeah after reading my post I will cancel my Jag appointment. I will take it somewhere local to have my battery checked. Unsure if I have one or two batteries though. One is definitely in the boot. Would the other be there too?
 

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Thanks. Yeah after reading my post I will cancel my Jag appointment. I will take it somewhere local to have my battery checked. Unsure if I have one or two batteries though. One is definitely in the boot. Would the other be there too?
Yes, if you have two batteries they will both be in the boot, next to one another. The smaller one is only operative when the stop start kicks in, all critical equipment is momentarily switched to that one for safety while stop start works so if that is low, stop start will not kick in.
 
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It will be your battery, even though it may start fine the voltage will be below 12.6 when not having engine running.
Have a look at battery dynamics in Barnsley a new exide AGM is around £130 easy to fit if you can get out the long clamp bolt. If you want to do it yourself read up on here first there are a few pitfalls.Jag prices are a joke.
 

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My stop/start did not function. As the batteries were 8 years old thought it best to replace them, a non starting car is worthless and on mine they forgot to fit a starting handle. A little while after the stop start started working - the car must have realised there were two good batteries despite me using an iCarSoft to tell the BMS.

WARNING, WARNING, WARNING - attach a slave battery whilst replacing the large battery as if not it can cause problems with the central locking - plenty of posts on the subject. Jaguar issued a TSB on this and their method of overcoming this are new Junction Boxes £££s or having the car reprogrammed by a garage with Autologic software.
 
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