With some vehicles, leaving an OBD Diagnostic adaptor connected on the Port (while running the car) actually leaves the car in limp mode / diagnostic mode.
Is this the same with the Crossfire?

I'd like to plug a wireless OBD Adaptor in, on a semi-permanent basis, to link up to Torque / Android Stereo etc. But if that will cause issues with the engine management, best avoided !

 

I’ve had a wireless OBD tool plugged into my port since November. No issues.

 

My experience from leaving a wireless OBD plugged in (by mistake) was a significant battery drain. I searched and searched for the parasite pulling fuses and watching my multimeter and finally narrowed it down and found I left that dang wireless OBD plugged in. If you drive the car regularly probably not much of a problem but when mine was plugged in the parasite increased my draw from the battery 2-3x the norm sitting and shut down.

 

Ok good to know, thanks! Plus that's reassuring.
Can I ask what setup you have, where you utilise your OBD data?

This is an interesting point. So do we assume the OBD Port is a permanent live connection? Not switched live with the ignition - never goes to sleep. Will have to monitor battery voltage quite carefully, initially. Incase there is a significant battery drain.
Sounds like you did a great job identifying the source of your parasitic drain, in the end, with the multimeter!

I've attempted something similar on our family vahicle, without much success. It too has what appears to be a significant battery drain (worse in the winter). The vehicle wont start if left for a week! I should check I didnt leave one of my OBD adaptors plugged into it! Might be onto something with that!

 

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Very interesting post. 1st, there MAY BE some OBD-II devices that are 'ON' all the time. Power IS at the OBD-II connector all the time. You will have to do some due diligence to make sure the devices you or anyone else installed are not 'on' all the time.

Another issue that I have not heard of lately, IF you purchased the car 'USED' and either financed it or rented to own (there are a few but far between sellers that do this), you should check to see if there is a tracking device installed (by a service that guarantees they can find the car if the payments stop or are missing for a few months). These GPS/immobilizer devices are in many cases a 2 way device. Not only will it tell the monitoring station where the car is (passive) but for a few dollars more (to a monitoring company) they can and will 'DISABLE' the car until it is picked up by a contracted rollaway. Our cars are old enough to have been with a couple to many owners, and any one of the intermediary 'stops' for a new owner may have included these devices. If it is installed, they would be the type that are 'ON' 24/7. Just an FYI, be aware!


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I think the OBD parasite issue I ran into was because it was a wireless OBD that I left in the port and forgot by mistake. The port is always live and that's how you can take readings from that port with the car turned off. So, if you have a wireless OBD plugged into it, it is always trying to send a signal to a reading device and is drawing constant power... Not a lot of power but I think mine was pulling about 100 millivolts on top of the typical 50-60 millivolts that are being pulled all the time. So when I found the OBD parasite I had forgotten about and pulled it my parasitic draw went back to within the normal range for these cars.