Dead Battery ::FURIOUS::
Veteran Member
Joined: Feb 2014
Posts: 9,016
Likes: 3,657
From: Adelaide, South Australia
I disabled the stop/start system the day after I picked up the car, by disconnecting the earth lead from the secondary battery.
For those with later models with a single battery, I wonder if those who have disabled the stop/start have OBD2 port related battery problems.
Put another way, maybe stop/start plus OBD2 plug ins = battery drain problems, disabled stop/start = no such problems.
Why anyone would put up with stop/start intrigues me given that the $ savings would be tiny bordering on zero in real world conditions.
Strange.
I regularly plug in a code reader (iCarsoft i930) to the OBD2 port, and I occasionally plug in an elm327 to connect to the Torque app on my phone, I have never disconnected or reset the battery, and I have never had a single battery problem and that's with the original now three year old battery.
The only thing that I can think of is that when I lock the car I always double lock it, and I do that every single time I get out of the car for any more than a couple of minutes.
Edit - and three sessions with the VTech tool from VAP.
I regularly plug in a code reader (iCarsoft i930) to the OBD2 port, and I occasionally plug in an elm327 to connect to the Torque app on my phone, I have never disconnected or reset the battery, and I have never had a single battery problem and that's with the original now three year old battery.
The only thing that I can think of is that when I lock the car I always double lock it, and I do that every single time I get out of the car for any more than a couple of minutes.
Edit - and three sessions with the VTech tool from VAP.
Senior Member
Joined: Oct 2017
Posts: 186
Likes: 41
From: Newcastle
You could be on to something.
I disabled the stop/start system the day after I picked up the car, by disconnecting the earth lead from the secondary battery.
For those with later models with a single battery, I wonder if those who have disabled the stop/start have OBD2 port related battery problems.
Put another way, maybe stop/start plus OBD2 plug ins = battery drain problems, disabled stop/start = no such problems.
Why anyone would put up with stop/start intrigues me given that the $ savings would be tiny bordering on zero in real world conditions.
I disabled the stop/start system the day after I picked up the car, by disconnecting the earth lead from the secondary battery.
For those with later models with a single battery, I wonder if those who have disabled the stop/start have OBD2 port related battery problems.
Put another way, maybe stop/start plus OBD2 plug ins = battery drain problems, disabled stop/start = no such problems.
Why anyone would put up with stop/start intrigues me given that the $ savings would be tiny bordering on zero in real world conditions.
I think this may be it. I have a 2016my with single battery and not yet disabled stop start, if I plug anything into obd port I have to disconnect battery to reset otherwise it will drain over about 2 days. Over Christmas vacation I may try to disable stop start and see if the problem persists or not
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