Here's a photo of the trunk compartment showing the main and 2nd battery in my '14. It's at the top of the photo under the 2 red cables.

I was feeling guilty about participating in a hijack of Frickenjag's thread, so I started a new one. For those wondering what the heck this is about, it is a continuation of a discussion that started on another thread. The '14 and '15 models have 2nd battery that is dedicated to eco-mode. I saw a picture on this forum of a '16 (which I can't locate), which had a different module not looking anything like any battery I've ever seen.

 

MY 2016: Doesn't look like there are any secondary batteries.

 

That's identical to the picture of another 2016 that was published here a couple of months ago. Everything else is the same on my car except for that unlabeled silver module on the lower right of your photo. That's where the 2nd battery is on 14-15s.

It appears that eco-mode is powered by the main battery on 16s, and that module is probably some sort of control unit for the eco-mode system.

So the answer for battery maintaining and charging on 16s is that it doesn't matter whether you use the under-hood charging points or direct connect a BT to the battery buss in the trunk It's not a fusebox as labeled in your photo.

 

Also MY14 & MY15 seem to be lacking the smoke reservoir, JLR to be applauded for placing it right by the battery for MY16!

 

lhoboy, Foosh - I find your photos of the truck electricals and mechanicals fascinating in detail, thanks for posting. I am really puzzled by the differences as well. So what is that white bottle with the red cap on Foosh's that is absent on lhoboy's? Then there's the large steel anchor, unless it is hidden in one view by the angle of the camera? Also that new silver module where the second battery used to be, does that allow an additional precious few cubic inches of trunk space? I am also wondering whether the floor of the compartment is painted? body color or something else? or am I just looking at aluminum in different light conditions.

 

Actually, it's the other way around, I don't have white bottle with red cap, and I don't know what it is. That appears to also be new in 16. "Smoke reservoir" ... ha, ha, I think we've established those are no longer necessary since the demise of Lucas electronics in Jaguars.

The trunk floor plan is painted as mine is Polaris and his is BRG. However, neither is clear-coated, just base color.

The aluminum piece (anchor) in lhoboy's picture appears to be a new storage location for the tow hook. Mine is stored under an elastic strap on the floor at the back of the trunk compartment.

Lastly, you don't get any extra trunk space in 16s as the removable, carpeted floor panels go over what you're seeing in those pictures.

 

That bottle is the tire goop, or fix a flat. It screws into the air compressor and seals the tire puncture.

 

Ah, mine is stored in the bag with the compressor.

 

The case has "fuse buss" stamped on it. I suspect the buss box may contain one or more fusible links.

 

Yes, it does contained fused links, and fuse buss would be an accurate term, although battery buss is more descriptive of what it's function is, which is to distribute power throughout the car.

 

The orientation of the "eco" battery and mounting points were adjusted slightly between the '14 and '15 model years as well.

I used a picture posted here of the battery on a '14 as reference for when I disconnected the battery on my '15. The battery was rotated to its opposite side and in the opposite direction to the '14. The battery was mounted further back towards the rear bumper as well, effectively removing access to the negative terminal on the smaller battery. I ended up having to disconnect the ground from the chassis side as a result. The hardware appeared to be identical, just mounted differently.

I would provide a picture, but visibility is blocked by the subwoofer now.

 

That's strange BierNut, my 2nd battery was positioned like shown earlier. I was able to just remove the negative terminal and tape it off. I wonder if there is a difference between the S and R or if they changed it midway during production.

 

Yeah, I wonder the same. My car's build date is 12/14.

 

Mine is 10/14.

 

As I study the two pictures of the 14 and 16 more closely, it looks like the 14 has a similar silver "module" in approximately the same location, with a cover over it which also houses the 2nd battery sitting right next to it. The difference is the 16 only has the silver module, which is now wired to the main battery.

A logical deduction would be that JLR decided the 2nd battery was both more costly and also probably unnecessary to power the eco-mode system.

 

Hmmm... close enough to where I wouldn't expect any design changes.

Perhaps my car is the odd one here, as others with '14 and '15 models are reporting that their car is consistent with photos others have posted. It's possible my car was a Friday afternoon car, and they just put the battery in the wrong position.

Although the ground lead seemed to be longer in my car than those in other's pictures to accommodate the different battery placement. Very strange.

 

On the MT, all the stars in the universe have to align before ECO is engaged.(in neutral, clutch released, dynamic mode off). Even then, car starts as soon as clutch is depressed. Not an issue for me.

 

""Smoke reservoir" ... ha, ha, I think we've established those are no longer necessary since the demise of Lucas electronics in Jaguars."

Actually, it's because of the demise of Lucas that a smoke reservoir would need to be added.

TXJagR is correct, however, it's tyre goop.

 

16's have no ECO battery as most of you have quite correctly mention. Also you will note the use of Green wiring now for some of the 'Hot' or +ve leads!

To disable ECO interruptions, simply disconnect the control wiring plug, (That's the ones with the small AWG wires on going to the smaller black plug) and hey presto! No more annoying stop/starts!

To get the best performance form your BT, CTEK or whatever you use to keep your battery in good shape, as shown, connect the +ve to the main +ve buss bar. Connecting it at the front of the vehicle, under the bonnet drops a little of the potential as the leads run the whole length of the car.

BTW: The pot with the red cap on is for deploying oil slicks at the rear, not tyre goop ;-)

 

Thanks, that's exactly what I've done as depicted in post #10 above.

Many have commented that it is totally unnecessary to use a maintainer since the car can sit for a month or more and still start without problems. While that may be true, it is also the case that lead acid batteries last a lot longer if they maintain close to a full charge all the time, and don't ever run down. With a BT wired to the battery buss, it's so simple to keep it plugged in, and I do that if my car is going to be idle for more than a few days.