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Emperor Mong



Member Since: 07 Jul 2010
Location: London
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United Kingdom 2019 Range Rover Autobiography 2.0 PHEV Loire Blue
PHEV - vampire drain?

I seem to have a serious battery drain going on.

I noticed when I returned to the car yesterday that the battery seemed to have emptied during the day. I wasn't sure where it should have been but I would have guessed 50% and it was at 0%. Odd.

I drove it home on petrol and plugged the thing in. Came down the next morning after about 10 hours of charging to find it was only at 75%. Odd.

Drove to station. Parked up with battery at 25% (about right). Returned 12 hours later to find it at 3%. Odd.

I've not been pinging the car from the app. I've not used the remote heater.

The only new thing is I did an over-the-air software update a couple of days ago.

Anyone got any ideas?

Post #533985 12th Nov 2019 8:09pm
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Alistair



Member Since: 11 Feb 2011
Location: Peterborough / Bordeaux / Andorra
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United Kingdom 2013 Range Rover Vogue SE SDV8 Santorini Black

It's been colder - which I guess takes something out gf the batteries, but shouldn't be that much.

Maybe the % are skewed & you need a full charge to kind of reset things ?

Post #533993 12th Nov 2019 9:07pm
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stan
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that software update sounds suspicious... ... - .- -.




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Post #533994 12th Nov 2019 9:09pm
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Emperor Mong



Member Since: 07 Jul 2010
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United Kingdom 2019 Range Rover Autobiography 2.0 PHEV Loire Blue

@ Alistair
Yes, the cold will have an effect but this, as you say, is a huge magnitude wrong

@ Stan
My thoughts too

I suspect that the climate control must have been firing - it is the only thing that could eat that much power whilst parked. When I drove it home, I turned the CC off and back on again to see if that resets something.

Post #534010 12th Nov 2019 10:10pm
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Cam-Tech-Craig



Member Since: 03 Aug 2011
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England 2015 Range Rover SVAutobiography SDV8 Loire Blue

Surely the CC must work with the vehicles main starting battery? Not the drive batteries.......

Software update would be my first port of call sir...

Post #534013 12th Nov 2019 11:01pm
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Emperor Mong



Member Since: 07 Jul 2010
Location: London
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United Kingdom 2019 Range Rover Autobiography 2.0 PHEV Loire Blue

I believe that the PHEV has an electric heater matrix driven off the drive battery. For instance, it will heat the car in all-electric mode and you can preheat the car whilst plugged in without the engine firing or the drive battery depleting significantly.

Latest Update
Car charged fully overnight - better
Car parked at station with 62% battery charge - let's see what happens when I get back.

Post #534052 13th Nov 2019 10:44am
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Emperor Mong



Member Since: 07 Jul 2010
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United Kingdom 2019 Range Rover Autobiography 2.0 PHEV Loire Blue

Came back to the car after c12hr.

Battery at 36% - so lost 26%.

Post #534202 14th Nov 2019 10:20am
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Emperor Mong



Member Since: 07 Jul 2010
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United Kingdom 2019 Range Rover Autobiography 2.0 PHEV Loire Blue

Spoke to the Technical Query bit of Land Rover Assistance. They had no idea, so it is off to the dealer with it.

Post #534209 14th Nov 2019 10:43am
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stan
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its a shame you cant do a system restore back to before the update to see if it is the update at fault.. ... - .- -.




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Post #534212 14th Nov 2019 10:51am
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Dixy



Member Since: 09 Apr 2009
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2016 Range Rover Vogue SDV8 Loire Blue

You have had it a while so time for new batteries. letters not necessarily in the right order

Post #534230 14th Nov 2019 2:22pm
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Emperor Mong



Member Since: 07 Jul 2010
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United Kingdom 2019 Range Rover Autobiography 2.0 PHEV Loire Blue

Maybe I put the wrong type of electricity into it?

Post #534231 14th Nov 2019 2:27pm
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ilard



Member Since: 21 Oct 2012
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You definitely have a faulty consumer unit at home, sir.

Seriously, this is either ambient temperature or software, like software being overly protective of something and miscalculating what % to show on the screen. What could be interesting is if you would drive it to zero and observe if it is different to happier times.

Otherwise, still thrilled with this drivetrain? Rolling Eyes L405 P400e Autobiography (MY2020)... Silicon Silver / Espresso

Post #534286 14th Nov 2019 10:38pm
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Emperor Mong



Member Since: 07 Jul 2010
Location: London
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United Kingdom 2019 Range Rover Autobiography 2.0 PHEV Loire Blue

Yes, still like it. It works well under most circumstances. Unless you need to tow (and as long as you have somewhere to charge it), it is the best powertrain they offer currently, IMHO.

Post #534287 14th Nov 2019 10:42pm
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