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In 5 years I have had the low battery warning once, after being away for several weeks.

Actually twice but the second time I had used a 12 volt pump to pump up my tires and used a 12 volt vacuum to clean the car. I also washed the car and had all the doors open while cleaning inside.

Original battery is over 6 years old. A/C on all year round and seat heaters and steering wheel heater on all winter.
 

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Hello. I’m new to land rovers. Me and my wife just bought a 2019 LR Discovery. About 2 months ago we got a low battery light come when we open the door but before starting the car. I bought a aftermarket battery. That didn’t work. So this past Saturday we took it to a LR dealer in Dallas TX and they replaced the battery They replaced it and said they had to do some software update. The invoice doesn’t say anything about the software update. We drove it home Saturday and around town on Sunday and come Monday morning when my wife got in the car the low battery light came on and it won’t start. When I went out to check it it started for me. I let it run for a while killed and locked it. Went to start it again later that day and dead. We are new to land rovers but is there anything I can check/do to fix this without the dealer?
Thanks for the help.
 

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Curious when you bought the aftermarket battery was it a AGM battery of the same spec as the original?

I imagine the dealer replaced with a Land Rover battery.

Connect a smart charger to the battery set for AGM and things should be OK.

Where are you located? Only ask because your IP address is in Washington State and not Texas.
 

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Curious when you bought the aftermarket battery was it a AGM battery of the same spec as the original?

I imagine the dealer replaced with a Land Rover battery.

Connect a smart charger to the battery set for AGM and things should be OK.

Where are you located? Only ask because your IP address is in Washington State and not Texas.
Bill
We bought the aftermarket battery at the end of April. It was a AGM battery and was not replaced by a dealer. The battery we had replaced Saturday (5-28-22) was a dealer battery. We found a recall for the discovery for the neg cable and chassis mount but it wasn’t for for VIN. This is our first Land Rover and it’s not looking good for us. Yes I’m in Texas. Thanks.
 

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The symptom sounds like a parasitic draw - something not turning off and continuing to draw power from the battery when the car's off. Modern cars will draw some power for a little while until all the electronics go to sleep so chasing down parasitic draws can take some time while you wait up to an hour for the car to sleep, then try not to do something to wake everything up and have to wait another hour. Search on youtube for "parasitic draw" and you'll find lots of videos explaining how to find them.
 

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The symptom sounds like a parasitic draw - something not turning off and continuing to draw power from the battery when the car's off. Modern cars will draw some power for a little while until all the electronics go to sleep so chasing down parasitic draws can take some time while you wait up to an hour for the car to sleep, then try not to do something to wake everything up and have to wait another hour. Search on youtube for "parasitic draw" and you'll find lots of videos explaining how to find them.
Thank you. I’ll look that up. I was wondering that but on Monday when we got it to crack the negative cable was hot to the touch within a few you it running.
 

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Do any of you know of a correlation between this battery issue and the brakes suddenly not working? I've had the battery warning for a a number of weeks. I had the battery checked and it was fine so I ignored it. However, my wife was running errands the other day and the brake pedal started going to the floor. She stopped and checked the fluids. It's fine...no discoloration and not low.
I don't see anything dripping on the pavement. I start the vehicle and pump the pedal several times. It goes about half way before feeling resistance then slowly continues to the floor board. It does feel mushy as well. I understand having air in the lines may have that feeling too but how does that occur out of nowhere? Just wondering if there is an electrical concern that this battery problem may manifest into a brake problem too.
 

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2016 DS HSE Auto Gas/petrol
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Sounds like major troubles with brakes that should be looked at asap.

Put the battery on charge. Will not solve brake problem, but why ignore a warning on your dash?
 

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Brake pedal going to the floor is dangerous. You should probably have it towed to wherever you're planning to have it serviced. A little air in the lines won't cause that and I don't think a low battery will either. If there are no leaks evident, it could be a seal in the master cylinder has given out and the fluid is leaking internally.
 

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I know there are other threads regarding this issue, but there hasnt been one open for a few months, and I just found this service bulletin. SFCC_APR2022_18

It seems there are quite a few models with this as a known problem. I have a 2018, and the warranty just ran out in June. Does anyone know of a way to get the software update for free, or low cost? I dont see a matching recall, so would expect the dealership would want a pretty penny for it. What alerted me to the bulletin was some codes that came up in my scanner. I had a CEL come on at the beginning of last week, along with a low battery warning. I got the car scanned at the end of the week, and found a few codes. I cleared them, and the CEL remained off. But today I decided to scan the car again, just to make sure nothing new cropped up. I had a low battery warning when I started the car this morning.. And there was a couple of codes in the system, even though a CEL hadnt triggered. The codes are U0447 and XP26CB. In googling U0447, I saw something about air flow, but then found another article that talked about low battery warnings, which identically matched what I was experiencing. That lead to a service bulletin for an older model land rover. After search for some of the text from that service bulletin, I found this other one that identifies my exact model. I just cant find the actual dealership hand out for a 2018 discovery sport.

Here are the referenced links:

Dealer bulletin for older model

LR Forum with 2018 Discovery Sport identified as having same issue

Does anyone have more info?
 

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Place your battery on charge using an AGM compatible smart charger such as the ctek charger, same as factory uses .

Low battery causes lots of computer problems
 

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Hi Guys, I'm new to this forum so plz excuse me if this has been discussed before,
Purchased an excellent;;ent condition 2016 Discovery sport in December 2021had 60K KM on it, was fine until in august, it gave me a low battery warning, went got it checked and it was too week, so installed a new Varta battery back in September, that fixed it temporarily, now the warning came back yesterday, the car starts fine its just the lights and back door don't work, until I turn it on and everything works fine , Took it immediately. to the place where I purchased the battery he did his measurement, it measured 14.5 V at idle and 12.7 when off, and about 1005 AMPS, so its very good, could it have actually been empty and fully recharged in a 10 mins drive? Does this car have an auxiliary battery? it has a start stop system that was never working at purchase,
thoughts anyone
 

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No aux battery. Was the new battery an AGM battery? Sometimes the battery sensing module has to be reset.. Place car on charge as recommended by several posts in this thread.
 

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Hi all,

Few weeks ago my battery got all drained out of power (for no obvious reason), that i had to hotwire it, and then tow it to the garage (some systems, like break and transmission did not perform normally)...
They did all the service recalls that were needed (i own the for for 6 months), including the battery control module update (which they claimed is to be blamed)... They also checked the battery and it checked out "OK" in the battery gizmo, giving 780 something of power (Amps?).
But since it came back it keeps giving me the "Low battery Plesa start engine" warning every morning. There is no real problem, other then the warning and the fact that the start-stop system would not engage (which is understandable).
I do drive most days for 15 minutes to comute to work, and longer drives at weekedns (after a long drive the start-stop system does engage properly).
The garage said it is not a problem, and the cause is the short travel time, which doesn allow the battery to fill up.
But i have concern that it will go completely drainedout again (which was somewhat troumatic for a 6 mothns old and very expensive car), because there might me some kind of power "leak" during shutdown to some roug subsystem.
Has anyone experianced the same?
Any long term solution?
yes had same on wifes evogue - new battery under 2 years old and just drained like i've never seen on any car. New battery works but strangely with old battery in and fully charged jump starter, although electric returned, it would not start until new battery in. No idea - I've come to same conclusion as most - just unreliable vehicle and poor quality and will never return to this brand. In uk they now have 5 models in top 10 for unreliability. zero and dishonest customer service and executive office.
 

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A battery can short internally and that sounds like what happened to your bad one. Newer cars (not just LRs) are very hard on batteries. A couple dozen computer modules that stay on for 5 to maybe 45 minutes on some cars never let the battery stay fully charged and lead-acid batteries hate that. It seriously shortens their life and it's not just an LR problem. It's a problem with every single make out there.
 
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