GMC Terrain, Equinox, and SRX Forum banner

1 - 15 of 15 Posts

·
Registered
Joined
·
2 Posts
Discussion Starter #1
I live in the Phoenix area. My wife and I bought our Terrain in March of 2019. The auto start/stop worked fine until the weather got hot and no longer functioned until the temps in Phoenix dropped back to where the feature would again function as it should. Around November the weather was again back into 80's and the start/stop stopped working and until we had the time to get it back to the dealer it was now late 2020. The dealer told me that because I did not put enough miles on the car to charge the battery correctly the start/stop would not work. They must have at least charged the battery because the start/stop worked great for one day and is now not working. I know from web discussions people would rather have it not functioning at all but I guess I want what I paid for! The service writer explained to me that the battery was an "Absorbent Glass Mat", AGM for short. It was picked because the newer technology battery was better because it was a deep cycle battery. My Question is if I don't keep the battery charged enough to to have the start/stop function correctly how long before the battery goes dead because of my infrequent driving habits. Anyone else having similar problems and that could help me solve this problem?
 

·
Registered
Joined
·
309 Posts
If you're not driving that often or just taking short trips, you might look into a battery tender, basically a trickle charger that has a quick connect/ release feature that keeps the battery "topped off", very easy to use and won't take much of your time when you need to get in the Terrain and go.
 

·
Registered
Joined
·
142 Posts
This makes me think that "not put enough miles on the car to charge the battery correctly" is the new go-to excuse. About a month after I bought my '18 Terrain the Lane Keep Assist feature stopped working. Why? Because, I was told, I didn't drive enough trips with many miles. The service rep actually said that in order to keep the battery charged that I would need to make multiple 90 mile one way trips each week. Yeah, right! They did replace the battery though, and admitted to no other changes. Lo and behold, without making any adjustments to the length my driving trips, which consists mostly of trips less than five miles with an occasional freeway trip of less than 15 miles, the LKA feature has been working fine since then.
 

·
Registered
Joined
·
976 Posts
My Question is if I don't keep the battery charged enough to to have the start/stop function correctly how long before the battery goes dead because of my infrequent driving habits. Anyone else having similar problems and that could help me solve this problem?

I owned my 2018 for 28 months. Most of the time I only drive 1 to 2 miles at a time and only get out of town on the highway every couple weeks.
My start stop operates normally.
 

·
Registered
Joined
·
2 Posts
Discussion Starter #5
Thank for all the replies. I retired in 2012 as a heavy equipment mechanic/ manager. I have about 46 years under my belt and I know when a service writer gives me a line of BS. If the function is not working then they should have the expertise to resolve the issue other then tell me, "I am not driving my vehicle enough to charge my battery"! If the dealer can't fix the complaint then GM should get involved to help the dealer and others from around the country who are most likely have the same issue. I respect the comment about using a "trickle" charger to keep the battery charged when I am not driving my car, but again that is only a bandage for the problem not a "FIX". If it's a simple battery swap well I guess I now have to put on my big boy Lawyer pants and have to shame the dealer into doing a battery swap, which was my first thought when this whole thing started.
Thanks for your comments!
 

·
Registered
Joined
·
236 Posts
These new cars don't really shut down like cars 10-15 years ago. The electronics are kind of in state of sleep but still use some energy. Its kind of like ET phone home. With onstar and live updates the systems wake up at times. How do you think you can locate your car and autostart it from anywhere in the world.

Its possible you have a bad battery. However if your not driving it every two weeks or more you could have a low enough battery that auto stop/start won't kick in and it also depends on what other accessories you are using.

My 2016 cruze did this when I went to Europe for two weeks. I was not able to remote start it and auto stop/started did work right away. After driving about 30 minutes everything was fine. The system is designed to preserve the battery.

You also mention about temperature. If your using the a/c more it will not always auto start/stop in order to keep a confortable temperature.
 

·
Registered
Joined
·
123 Posts
If you're not driving that often or just taking short trips, you might look into a battery tender, basically a trickle charger that has a quick connect/ release feature that keeps the battery "topped off", very easy to use and won't take much of your time when you need to get in the Terrain and go.
My 04 Vette sat in garage more than it saw the road....battery tender was always hooked up
 

·
Registered
Joined
·
2,215 Posts
Thank for all the replies. I retired in 2012 as a heavy equipment mechanic/ manager. I have about 46 years under my belt and I know when a service writer gives me a line of BS. If the function is not working then they should have the expertise to resolve the issue other then tell me, "I am not driving my vehicle enough to charge my battery"! If the dealer can't fix the complaint then GM should get involved to help the dealer and others from around the country who are most likely have the same issue. I respect the comment about using a "trickle" charger to keep the battery charged when I am not driving my car, but again that is only a bandage for the problem not a "FIX". If it's a simple battery swap well I guess I now have to put on my big boy Lawyer pants and have to shame the dealer into doing a battery swap, which was my first thought when this whole thing started.
Thanks for your comments!
I do commend your 46 years of hard work and paying your dues.
I started pumping gas when I was 16 and made a good living in the auto profession when I retired in 2006.
Things change.

You had me until you got to your big boy Lawyer pants.
Today's vehicles have a huge draw on the battery, I drive about 3K miles a year on my Equinox and have gone through this more than a time or two living in Tucson.
I have a KARR security system which makes it worse.

Use your volt and amp meter and shaming won't be necessary.
Welcome to the forum.
 

·
Registered
Joined
·
40 Posts
What battery voltage are typically seeing? In stop mode the voltage will routinely drop to the low 12s and then shoot up to the low 14s on restart to replenish the battery. If you running in the 14s and stop/start is not working, your battery could be marginal enough to prevent the feature from working.
 

·
Registered
Joined
·
3,559 Posts
As kowal_joe mentioned, keep an eye on your A/C usage and STOP/START “working/not working”. I don’t have this feature on any of my vehicles, and I’m gonna try to avoid it with my next new vehicle purchase, but I’m pretty sure I’ve read here that use of A/C deactivates STOP/START.

You may have had a battery issue, but your use of A/C may have also been disabling STOP/START. Two “issues” at the same time...
 

·
Registered
Joined
·
10,101 Posts
I think having a/c on max will not allow as to operate.
 

·
Registered
Joined
·
40 Posts
As kowal_joe mentioned, keep an eye on your A/C usage and STOP/START “working/not working”. I don’t have this feature on any of my vehicles, and I’m gonna try to avoid it with my next new vehicle purchase, but I’m pretty sure I’ve read here that use of A/C deactivates STOP/START.

You may have had a battery issue, but your use of A/C may have also been disabling STOP/START. Two “issues” at the same time...
A/C operation doesn't deactivate the stop/start system. The system takes into account cabin temperature, sun load on the dash sensor, fan speed, outside temperature, etc. to determine whether or not to shut the engine off or not. My 2019 2.0t follows roughly the following (climate control in auto for all conditions):

1. 95+ degrees - never shuts off
2. 80 to 95 degrees & bright sun - shuts off rarely
3. 80 to 95 degrees & low sun/clouds - shuts off frequently & restarts within 35 to 40 seconds

Below 80 degrees (and remember, these are approximate temp levels) the system activation is strictly potluck. In Tucson we can have bright sun on a 60 degree day that will keep the engine from shutting off most of the time and on a cloudy 90 degree day have the engine shutting off at every stop light.

Qualifier: This is how "my" 2019 'Nox operates, where "I" live, and how "I" understand the system to operate. YMMV
 

·
Registered
Joined
·
3,559 Posts
As kowal_joe mentioned, keep an eye on your A/C usage and STOP/START “working/not working”. I don’t have this feature on any of my vehicles, and I’m gonna try to avoid it with my next new vehicle purchase, but I’m pretty sure I’ve read here that use of A/C deactivates STOP/START.

You may have had a battery issue, but your use of A/C may have also been disabling STOP/START. Two “issues” at the same time...
A/C operation doesn't deactivate the stop/start system. The system takes into account cabin temperature, sun load on the dash sensor, fan speed, outside temperature, etc. to determine whether or not to shut the engine off or not. My 2019 2.0t follows roughly the following (climate control in auto for all conditions):

1. 95+ degrees - never shuts off
2. 80 to 95 degrees & bright sun - shuts off rarely
3. 80 to 95 degrees & low sun/clouds - shuts off frequently & restarts within 35 to 40 seconds

Below 80 degrees (and remember, these are approximate temp levels) the system activation is strictly potluck. In Tucson we can have bright sun on a 60 degree day that will keep the engine from shutting off most of the time and on a cloudy 90 degree day have the engine shutting off at every stop light.

Qualifier: This is how "my" 2019 'Nox operates, where "I" live, and how "I" understand the system to operate. YMMV
But how does the A/C couple to the engine on these vehicles? Is it the conventional way - a pulley and a belt? If so, and you shut the engine OFF, wouldn’t that kill your A/C? Or is there a separate electric motor that kicks in to keep the A/C running? I thought I remembered reading the coolant works that way?
 

·
Registered
Joined
·
142 Posts
But how does the A/C couple to the engine on these vehicles? Is it the conventional way - a pulley and a belt? If so, and you shut the engine OFF, wouldn’t that kill your A/C? Or is there a separate electric motor that kicks in to keep the A/C running? I thought I remembered reading the coolant works that way?
To the best of my knowledge, the A/C is conventional.

My experience with stop/start is that if the A/C is on, the engine will restart while stopped at, for instance, a traffic signal long enough that the cabin starts to warm back up. I don't know the threshold parameters of the stop/start system that it uses to determine when to restart while stopped, but I have found the cabin temperature rise to be minimally noticable even during the blisting hot days in late summer here in SoCal. It doesn't get unbearable eveb during the monsoonal flow that the "Zonies" send our way.
 

·
Registered
Joined
·
673 Posts
one other possibility is a dying battery will prevent the auto start/stop ...on the diesel we have it does not operate if the voltage is below 12.6 or 12.8 V ....if the battery is dying or the alternator is not providing enough charge..it will never cross that limit.


I'll bet a dying battery...as many on this site have complained of failed battery within 6 months to a year after taking possession of their new car.
 
1 - 15 of 15 Posts
Top