OBD11 draining battery

[Vinsjent]

Hi,

I bought my Seat last week and an obd11 along with it.
After driving around a bit I wanted to change how some settings behave so I connected the obd, went through the setup like normal and did a scan.
For some reason when I have the obd connected for about a minute I get a warning "low voltage: battery below 12V" and the car won't start.
Doing a push start will get it going and if I drive a bit it'll start on it's own.
I tried connecting the obd again after driving 2 hours and the same thing happened.
Is my battery dead? Or is the OBD messing with something.

by the way for connecting:
Connect OBD
put the car on ignition but don't start it.
Open the app and do the scan
After scan I have about 30-40s then the battery dies.

any help?

 

[cairus]

How old is the Batterie?

 

[Vinsjent]

How old is the Batterie?

I would assume the dealer replaced it sooo last friday?
Is there any way I can check?

 

[cairus]

Take a Photo

 

[Vinsjent]

Take a Photo

I'll take one for you in the morning.
It's pretty late right now.
I'll take a picture of the battery health dot as well.

 

[cairus]

no, complete view where you can read everything that is written on the battery

 

[SteveGSXR600K1]

I would assume the dealer replaced it sooo last friday?
Is there any way I can check?

Why do you assume the dealer swapped the battery out? Was there an issue with the battery before you bought it?

 

[Vinsjent]

Why do you assume the dealer swapped the battery out? Was there an issue with the battery before you bought it?

You were right he didn't swap it.
My battery was from 2017 and it didn't start again this morning.
Got a replacement battery and the dealer I bought the car from will pay it.
I'll try the obd again after driving a bit to make sure it has some juice, thanks anyways!

 

[nd-photo.nl]

I can highly recommend everyone to add a battery monitor to their battery. Gives insight in what is happening On my previous car it helped me with finding a battery drain.

More info: https://www.seatcupra.net/forums/threads/nd-photo-nl-s-seat-leon-st-cupra-280.477591/post-5068748

Link: https://www.amazon.nl/-/en/Battery-...oring-temperature-notification/dp/B00ZETXNAQ/

 

[Big Vinny]

If you replace the battery you will need to use your OBD11 to "code in" the new one if you fitted your own battery or the garage hasn't done it. There are threads and YT clips on how to do this. It's pretty straightforward.

One of the first signs of a failing battery is "stop start" will not work. I believe if the battery does not store over 80% of its programmed maximum charge it will not work and you get the stop start crossed out symbol on startup.

 

[tracktoy]

Just to add I have my OBD11 Dongle plugged in all the time (for well over 5 years) with no issues on battery draining.

However OBD11 do recommend you log off the car after using the dongle just to ensure you dont leave any control units running.