My car is dead!

[warmasice]

I managed to get into the boot. Oddly I was able to jump start by connecting the leads directly to the battery (not sure why) but not the points under the bonnet. Next steps are:

1) Replace the battery (I'll submit a warranty claim with Tayna as it's only just over a year old)

2) Throw my Aldi tickle charger in the bin and get a Noco or Ctek. Any recommendations? Is one better than the other?

 

[warmasice]

If all else fails, then try supplying 12volts to the trunk unlock solenoid for a split second.

It's a Grey/green wire. Grey with green lines.
It's located behind the glove box, so you will need to remove that first.

If you look carefully at the pics below you can see that he's stripped a tiny bit of covering off the wire. And attached a paper clip to the crocodile clip to make it easier to apply.

https://www.e90post.com/forums/showpost.php?p=22939892&postcount=97

This should pop the boot.

Once opened, use a multimeter to check voltage across the battery terminals. If OK, check across the terminal posts in the front.
If you are not getting anything at all in front, it's possible the battery protection charge has gone off, thereby isolating the battery.

Great advice. I was able to jump from the back. Nothing on the terminals at the front. I wonder if this means the battery protection charge has gone off? Where can I find this and how would I check if it's definitely gone off?

Thanks

 

[Tom2207]

how did you get into the boot in the end ??

 

[Zed Baron]

If all else fails, then try supplying 12volts to the trunk unlock solenoid for a split second.

It's a Grey/green wire. Grey with green lines.
It's located behind the glove box, so you will need to remove that first.

If you look carefully at the pics below you can see that he's stripped a tiny bit of covering off the wire. And attached a paper clip to the crocodile clip to make it easier to apply.

https://www.e90post.com/forums/showpost.php?p=22939892&postcount=97

This should pop the boot.

Once opened, use a multimeter to check voltage across the battery terminals. If OK, check across the terminal posts in the front.
If you are not getting anything at all in front, it's possible the battery protection charge has gone off, thereby isolating the battery.

Great advice. I was able to jump from the back. Nothing on the terminals at the front. I wonder if this means the battery protection charge has gone off? Where can I find this and how would I check if it's definitely gone off?

Thanks

Strange that you were unable to get into the boot with the method I described, when I did it my battery was actually disconnected. At least you've been able now to rectify the issue and I bought a Ctek and its been great.

 

[warmasice]

If all else fails, then try supplying 12volts to the trunk unlock solenoid for a split second.

It's a Grey/green wire. Grey with green lines.
It's located behind the glove box, so you will need to remove that first.

If you look carefully at the pics below you can see that he's stripped a tiny bit of covering off the wire. And attached a paper clip to the crocodile clip to make it easier to apply.

https://www.e90post.com/forums/showpost.php?p=22939892&postcount=97

This should pop the boot.

Once opened, use a multimeter to check voltage across the battery terminals. If OK, check across the terminal posts in the front.
If you are not getting anything at all in front, it's possible the battery protection charge has gone off, thereby isolating the battery.

Great advice. I was able to jump from the back. Nothing on the terminals at the front. I wonder if this means the battery protection charge has gone off? Where can I find this and how would I check if it's definitely gone off?

Thanks

Strange that you were unable to get into the boot with the method I described, when I did it my battery was actually disconnected. At least you've been able now to rectify the issue and I bought a Ctek and its been great.

I know. Boggles my mind too! Thanks for the feedback on the Ctek.

 

[warmasice]

how did you get into the boot in the end ??

I connected a bigger jumper pack. As soon as I connected it, I could hear some relays and immediately pressed the boot release button on the key fob. The jumper pack dropped from 100% to 5% without even attempting to start the car, so battery must have been fully depleted. Odd, that trying to jump start with another vehicle at the correct under-bonnet connections wouldnt work (interior lights wouldn't even come on) unless jumping from the boot.

On another note, Tayna batteries have been great on a Sunday evening. They're sending a replacement battery under warranty tonight and should be with me tomorrow.

 

[Tom2207]

wow ,,, great result , maybe its shorted its self out with a buckled plate or the likes ,, batteries can be funny old things .

 

[Zed Baron]

Just out of curiosity what model of battery was it I know its a bosch

 

[warmasice]

wow ,,, great result , maybe its shorted its self out with a buckled plate or the likes ,, batteries can be funny old things .

Thanks Tom, they sure can be!

Just out of curiosity what model of battery was it I know its a bosch

A Bosch AGM S5 A08 Type 096 battery.

 

[warmasice]

Hats off to Tayna batteries who dispatched a new battery under warranty. Arrived super quick.

Perfect 12.6v out of the box too!

 

[Tom2207]

maybe best not to close the boot for a while ,, Im sure you can tap the light switch closed , if it has one ,,,
also be interesting to leave the meter on for a while , or connect it inline to read amps , and see if theres a constant draw thats not in miliamps. I used to have a voltage drop detector on my audi I didnt use often , if the battery volts dropped below 11.8 or something like that , it went clunk and disconnected the battery totally , then all you had to do was pull the bonnet and press the button on the top of the device and all was connected with enough in reserve to get going again , granted with the battery in the boot and an electronic lock , its not ideal , but worth mentioning non the less