Thread: Starting issue (battery or electrical)

Hm.

I disconnected the aux battery, jumped the car from it. left it disconnected

Ran the car for half an hour, and has now sat turned off for two hours and the main battery is holding 12.56V

Not sure what sort of dual battery set up you have but maybe it's faulty. Could explain the blown fuse .

Bulletman

Originally Posted by Lukeis

Hm.

I disconnected the aux battery, jumped the car from it. left it disconnected

Ran the car for half an hour, and has now sat turned off for two hours and the main battery is holding 12.56V

Go out and turn your lights on for 15 minutes and then check.

I get what you are saying Tombie

Most roads seem to be pointing to the main battery dying but not quite dead, to shortcut to a possible outcome I’ve just replaced the battery with a new one.

If no issues after a day or two we have our answer, otherwise expect another cry for help lol

Where did you get the battery from?

Originally Posted by Lukeis

This morning I drove my car to get a wheel alignment, it had been sitting for 12 hours without use.

started as normal, drove 10km to the mechanic, picked up an hour later and they told me the battery died while it was in the shop and wouldn’t start

got in the car, battery light was on the dash. drove two shops down to a battery shop and they tested the main and the alternator and he said both were good. battery came up as 89% health, alternator was charging at 13.86V

At the shop we turned car off after about 5-10 minutes so we could test the battery, while off the battery light stayed on the dash.

Turned the car back on and it restarted just fine, light disappeared.

drove 5 minutes to an auto elec (a fuse had blown between the main and dual battery) was with him and hour, started again ok then used a few more times around town all ok. Then got home and sat still for an hour, won’t start - main battery showing (11.2v) - dual battery is showing 12.2 - keep in mind it was coming off being completely flat due to the blown fuse between the two.

any ideas what is happening?

seems like either the main battery is dead - but passed the test at the battery shop and worked several times since then. Is that possible?

or something is draining the car while it’s locked - all my extra accessories ie CB, USB plugs and fridge are all turned off and are wired to the dual battery in any case so can’t see how. And that battery has more charge indicating the VSR isn’t stealing power from the main.

Or the alternator but it was showing as working when car was running (car is flat now so can’t check again)

Anything else? so confusing

The battery would have been low when you took it to get the alignment. The wheel alignment process includes ( for most machines ) locking the brake pedal in the down position with a rachet lever set up from the front of the seat. This means your brake lights are on for the duration of the alignment process. If the alignment specialist is not a Landrover dealer, he may also leave a door open to stop the suspension from adjusting while he is completing the alignment. This is the most common fix for non dealers who are aware the suspension could move and upset their readings. Once you have driven the vehicle for any time since restarting you have enough charge to carry on as normal. I think your battery was just down a bit, and the circumstances came together to give you a momentary issue at the time. Does point to the battery not being at optimum though. Load checks etc are notorious for not showing up issues with D3-4 batteries. They don't have to be down much to give you issues.

For the record (and for those who come across this thread later):

-Leaving the door open doesn’t prevent the suspension moving.

-Unless it’s in TTM the difference in height side to side can be up to 20mm

-Brake lights don’t work with ignition in off position/vehicle not running

Originally Posted by Narangga

Where did you get the battery from?

I feel like this is not going to be received well, but battery world. It’s close to where Iam staying and there is another store near my house in Sydney + 30 months warranty

they tested the battery as well and said possible dropped cell - but the old adage ‘you don’t ask a barber if you need a hair cut’ possibly applies

so far so good