Do you have an OnStar subscription or use the app at all?
Definitely sounds like you might be onto something there.Update...the dealer never called me today like he said he would about the OnStar mirror staying lit up after the car is parked...last night the mirror shut off....tonight, the mirror was on again when I checked 4 hours after the car was parked for the night. I went out to the car and started it up and then shut it off and the OnStar mirror was still lit up. I started the car again and this time I pushed one of the buttons on the mirror to call OnStar and then canceled....shut the car off and the mirror was off...something is going on with this OnStar mirror that's for sure....just putting this out there for the others on this forum that have reported the battery drain issue....not sure it's the real problem but the mirror being on while the car is parked is no doubt putting a drain on the battery especially if the car is parked for a week or so while the mirror is on...stopping by my dealer tomorrow yet again about this issue.
I concur.Definitely sounds like you might be onto something there.
In round numbers, that's about a quarter amp-hour per hour. So overnight (16 hours) is about 4 amp-hours. A battery that's not on it's last legs should be able to handle that. Now, park it for a week, (24 x 7) 168 hours, that's 42 amp-hours. That could leave you needing a jump.told me that the OnStar will draw 240 MA
That's consistent with your experience on what it took to get the mirror to go off (doing another call - restarting the car didn't do it.)it turns out that if you do not end your phone call or switch the call from the Bluetooth back to the phone before you turn off the car, then OnStar mirror will not turn off.
What does the owners manual say?OK guys this is what I found out...but first I was wrong about the dealer not getting back to me like they said they would....they did call yesterday and I missed the call and didn't see it on my phone til today...anyways.... the dealer told me that there is a TSB on the Bluetooth with the Cruze....it turns out that if you do not end your phone call or switch the call from the Bluetooth back to the phone before you turn off the car, then OnStar mirror will not turn off...told me that the OnStar will draw 240 MA I think he said...don't know much about that stuff, but the TSB said that it will drain the battery dead in 3 days or so if that OnStar mirror is left on. Dealer told me there is no fix and you have to follow the procedure if you use the Bluetooth with your phone or the OnStar will not turn off after the car is parked.....told me you can't disconnect the OnStar without losing the Bluetooth as it's all connected.
Well at least I know what was draining my battery and I can prevent it from happening again ..but I'm not very happy that GM hasn't fixed this major flaw in it's system...and GM didn't even bother to tell it's customer about this issue so the customer could at least take steps to keep the battery from draining dead like it has with me twice now.
It probably says to end your call or switch off bluetooth before shutting off the car and exiting the vehicle...What does the owners manual say?
Yea it all makes sense...I usually take on my phone while driving home and get to my driveway and shut off the car while I'm still talking...so the OnStar wouldn't shut off and I leave for 8 days then the battery was dead...when I took the car to the dealer to have them check out the issue, I never used the phone before I dropped it off and the OnStar shut off with the car and that's why they said the battery draw was normal....it's just so hard to believe the GM wouldn't have a fix for something like this...I don't know why GM even has that OnStar....sure some would like it but I bet most don't..yea it's sorta of neat at first and I did like the navigation part of OnStar..but the service is just too much money for what you get if you ask me...and now the OnStar hardware is a proven problem for the car and GM doesn't even have a fix...wish I didn't have OnStar in my car.In round numbers, that's about a quarter amp-hour per hour. So overnight (16 hours) is about 4 amp-hours. A battery that's not on it's last legs should be able to handle that. Now, park it for a week, (24 x 7) 168 hours, that's 42 amp-hours. That could leave you needing a jump.
That's consistent with your experience on what it took to get the mirror to go off (doing another call - restarting the car didn't do it.)
I don't know what it says.....do you....what are you trying to say I'm stupid...it's pretty clear that a Bluetooth system shouldn't behave like this system does....my last cars Bluetooth system wouldn't drain the battery if you didn't follow a procedure and I bet no other car does either...it's a flaw in the system...why does the car shut off all the electric after 10 minutes after after you turn the key off if you don't open a door...but yet I'm to expect that the Bluetooth system stays on and will drain the battery dead....why is there a TSB on the Bluetooth if the owners manual tells you to end the call before you shut off the carIt probably says to end your call or switch off bluetooth before shutting off the car and exiting the vehicle...
Wow - this is a major flaw induced in a system that worked fine in earlier model years. I would report this to the NHTSA so they can put some pressure on GM to fix their software. This is nothing more than a software bug.OK guys this is what I found out...but first I was wrong about the dealer not getting back to me like they said they would....they did call yesterday and I missed the call and didn't see it on my phone til today...anyways.... the dealer told me that there is a TSB on the Bluetooth with the Cruze....it turns out that if you do not end your phone call or switch the call from the Bluetooth back to the phone before you turn off the car, then OnStar mirror will not turn off...told me that the OnStar will draw 240 MA I think he said...don't know much about that stuff, but the TSB said that it will drain the battery dead in 3 days or so if that OnStar mirror is left on. Dealer told me there is no fix and you have to follow the procedure if you use the Bluetooth with your phone or the OnStar will not turn off after the car is parked.....told me you can't disconnect the OnStar without losing the Bluetooth as it's all connected.
Well at least I know what was draining my battery and I can prevent it from happening again ..but I'm not very happy that GM hasn't fixed this major flaw in it's system...and GM didn't even bother to tell it's customer about this issue so the customer could at least take steps to keep the battery from draining dead like it has with me twice now.
Which raises a question - why doesn't the battery saver kick in and prevent the battery from draining all the way? I'll have to check and see if OnStar is exempt from the battery saver.why does the car shut off all the electric after 10 minutes after after you turn the key off if you don't open a door...but yet I'm to expect that the Bluetooth system stays on and will drain the battery dead.
Agreed.Sounds like it would just be a software fix.
Is NHTSA going to care? I think their only concern is safety. As annoying as it is, I don't think it rises to the level of a safety problem.Wow - this is a major flaw induced in a system that worked fine in earlier model years. I would report this to the NHTSA so they can put some pressure on GM to fix their software. This is nothing more than a software bug.
While similar, I think it's different enough that it's not the same bug. Perhaps the larger issues is the test case of continuing a call after shutting off the car was never included in their software testing.GM TSB #08-08-46-008B for 09' models w/Bluetooth & OnStar - Chevy Trailblazer SS Forum
This is for the MyLink system in certain 2009 model years. If this is what your dealership is referencing they're way out of date unless GM hasn't fixed this problem in the intervening 5 years, or worse yet, fixed in 2010 and then reintroduced this bug in 2014.