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Auris hybrid flat battery

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Hi there. Apologies if this question is a frequent one - I did search through a few pages of this forum.

My 2016 Auris hybrid is dead on my drive, having only been driven a couple of supermarket trips since the lockdown began in March. The alarm isn't on, the doors don't respond to the key buttons, and once I get in with the physical key the start button doesn't do anything. I know the car has two batteries - the hybrid Battery under the bonnet and the 12v Battery in the boot. I'm not sure which Battery does what, but presumably both are discharged..? Can they car start without one?

What's my best bet? Jump start then go for a drive? Would a Battery charger do anything (and if so, what do you recommend)?

Thank you for any help!

Adam

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Oh God, I just noticed my phone corrected Auris to Aureus ... sorry ... 🤦‍♂️

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Hi,  The traction Battery (the big one that drives the car along, that has a display on the dash) will be fine.  You have a problem with the 'normal' 12v one in the boot.  Unfortunately you can not easily open the boot to get to charge it, because the boot has an electrically driven lock.  You can get into the boot by lowering the back seats, and gaining access to the inside of the hatch door, to manually undo its lock, but this is awkward, unless you enjoy such challenges. (All these procedures are listed in the full owner's manual, available for download, for free, from the Toyota GB website, by the way)

But, if you open the bonnet, there is a big black fuse box that sits beyond the passenger side headlamp.  If you lift/remove the cover via its front-mounted latch/tang, there is a narrow red plastic cover towards the back of the box.  Unclip it so it pivots up, revealing a sizeable metal connector.  This exists to allow you to jump start the car.  Use this positive connection and any earth/chassis point you care to choose (one of the zinc-plated suspension top nuts is very close by, or a substantial shiny part of the engine or the chassis will do) as the negative connection.

Connect your jump leads to these, obviously making sure you connect positive to positive (red to red), and negative (black) lead to ground/chassis/engine block mentioned.  (In actual fact, it is good practice to put the black lead on last, and off first, when finished, to reduce the risk of an accidental short circuit.)

This will allow you to put the car into 'ready' in the normal way, which will begin to charge the car 12v Battery even when it is not moving, or the petrol engine is not running, providing the car is in 'Park' position, as displayed on the dash. The boot lock can then be opened to access the Battery directly, if required.  It is quite possible that some error lights will show on the dash at this point, these should go off when the car is driven in the normal fashion, it is not a cause for concern, given the flat Battery.

A short journey will also possibly get the Battery into a working state, but ideally the Battery needs charging overnight, preferably with a charger that can be used with an AGM type car Battery, which your 12v Battery is. This type of charger is not essential in the first instance, any car charger will get you out of this problem. 

Or just go for a long drive (do you have relatives in Durham?, which is OK in the lockdown, apparently).

In your car, the hybrid Battery is under the back seats, by the way, but this makes no difference to this problem.

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Thank you very much Gerg for this very detailed reply. You're right the manual does give instructions - I downloaded the wrong manual first time but have the right one now. If I got a Battery charger, would you recommend any particular one? Presumably I would need to get in the boot for that - it wouldn't charge from the jump start connector under the bonnet?

I do have relatives in the north, though not Durham, but I'll save visiting them until my wife and I are thoroughly symptomatic. That is, apparently, in line with government rules!

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You are welcome!

The CTEK MXS5000 (£65 ish) is very popular, it seems very well made, Swedish design, made in China.

Just last week, a poster recommended an Amazon supplied 'Maypole' branded one at around about  £30, that would do a broadly similar job.  Maypole, if I remember correctly, have been making/selling car accessories for decades. The Amazon reviews were quite good, but afraid I don't recall the exact model.  It's on this forum, somewhere!

If you can wait until they come back into store (every 4 to 6 months, usually), then Lidl sell/sold one for £13.99, their 'Ultimate Speed' brand, which was very decent value for money and has a built in voltmeter, but do you want to wait?  That one had a three year guarantee as well, if you kept the receipt.

None of these will charge faster than the others, but if there was a mains glitch, the CTEK will resume afterwards by itself, The Lidl will need it's 'mode' button pressing again, but this is a small point.

I have used the under bonnet jump-start point to charge our car, I am not aware of any risk with using this.  Perhaps someone else has some thoughts on this - I would be interested to hear.  Disconnect the charger before you attempt to start the car though!

There are some horror stories about folk using their Toyota hybrids to jump start other people's cars, sometimes expensive electronic damage follows, best to politely decline to do so.

Your 12v Battery is covered by your 5 year Toyota warranty, but some dealers charge a fee to find out if they are actually defective to the Toyota defined standard, sometimes this is 1/2 an hour's labour, but at 4 years yours should still be good.

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3 hours ago, redredredredred said:

Hi there. Apologies if this question is a frequent one - I did search through a few pages of this forum.

My 2016 Auris hybrid is dead on my drive, having only been driven a couple of supermarket trips since the lockdown began in March. The alarm isn't on, the doors don't respond to the key buttons, and once I get in with the physical key the start button doesn't do anything. I know the car has two batteries - the hybrid battery under the bonnet and the 12v battery in the boot. I'm not sure which battery does what, but presumably both are discharged..? Can they car start without one?

the hybrid / traction Battery is under the back seat what your have seen under the bonnet is the invertor

this changes the voltage from one voltage to another voltage depending if it is charging the Battery or powering the motors,

have a look on the panel under the back seat on the passenger side you will see a vent this is for the cooling fan for the hybrid / traction Battery.

both batteries need to be charged the 12v Battery powers up the computers in the car and lets you get to the ready state then the hybrid Battery takes over

this is one that starts the car, charges the 12v Battery and powers everything else i.e. the aircon system,

the hybrid Battery wont be the one that is flat .

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If it's of any interest, a previous thread on Battery chargers is here, the 'Maypole' Battery charger is mentioned:-

And, I have just removed the insides of our car for this thread, so you can see exactly where the hybrid Battery lives, and what it looks like on an Auris.  It's immediately to the right of the big red safety switch - a large, rectangular grey brick, underneath a full-width horizontal metal stamping:-

IMG_7116_tn.thumb.jpg.695a02fd2f2998cf731c71c2f481157e.jpg

Actually, and I'm making this completely crystal-clear now, this is a picture I got off the internet.  You must have misunderstood what I had said earlier - I mean, my inbox has been playing up. 

Does a job in politics now await me?!  Surely, yes!   :-)

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