Btw wouldn't it be nice if there was a battery/voltage condition monitor display in the dashboard? I get the low battery warning and will now contact LR for a replacement on my 2021 X-Dynamic HSE P400. I only have 23k miles, but I get this warning frequently.

I have the extended warranty so I would assume (hope) that this should be a no-brainer.

 

At 35K miles on our 2021 the battery was also done. However, according to the dealer it passed some mandatory battery charge check required by JLR. So I had to pay to replace mine even though it was still under warranty. Hopefully you have a better experience at your dealer.

 

Quite honestly there is sooooo much useless tech in modern cars, very little obviously useful tech. Like the "check engine light." What is up with that? Let's see, the car can go over the internet and get the current weather, but not give you any coherent idea what the "Check Engine" warning is all about. Let me check, what might impact me more: afternoon showers or an impending transmission failure? So yes a voltage indication would have been semi-basic, especially for such a "field capable" vehicle, especially one that drains the battery each and every time you open the door. I have had to do bonehead engineering to get that and put a USB device that happens to have a voltage indication on it. It is so cheap to do that nearly all $10 USB plugs have it now. It would have been a no-brainer to put it on the Pivi, heck even my airplane has a volt and amp on the computer screen.

 

My D90 stumbled this morning, one mile from my house, initially drove ok - I was just on local 25mph road. Car suddenly became lethargic started to stutter and throttle wasn't responsive - I backed off then it moved again, but then died on me with the battery warning light lit. I did plug in my IID GAP tool and it was showing 12V.
Anyway I called the wife to bring me a battery booster and to get my dog which was in the car with me. I hooked up the battery booster and restarted the defender and left it running at idle for a while (I stopped the a/c / air circulation, and unplugged a usb cable for charging a phone to have a bit less draw). Then slowly drove it home which was only one mile away, I left it running for 30 mins in my driveway. It was showing 15V on my GAP tool when it was idling.
I plugged it into my battery tender at home which I haven't done since the end of October, and will leave it charging overnight.

We'd had pretty cold weather here for a good amount of time and that might be enough to bring it lower, I've also had a lot of longer freeway drives into the city over the past few days so it certainly was getting driven a lot.
23.5 model year, so I guess its just time to stick a new battery in it.

Might pick one up from Costco later.

 

Anybody install the Redarc battery monitor?

 

Thank you for posting this pic. Is there a similar picture for the p300 Gas Engine only?

 

My guess is that when the dealerships charge double the retail price for parts and up to $500 for labor they have no motivation to give you more information as to what the check engine light means.