Car won't start every day.

brandonms2ss · 10-22-2018, 10:59 AM

I've had this weird electrical issue since I bought my 2016 A8 2SS. I daily drive my car and every other month my car does not want to turn over. I have a jumper in my car, so I just jump it up when it happens. The weird thing is that it does not happen again for another 3-4 weeks. Dealer said they would have to keep the car to diagnose the issue. Any ideas?? Thanks in advance.

kropscamaro16 · 10-22-2018, 11:27 AM

i have a 16 ss with 25k miles on it and i just had both my fobs die and couldnt start car tried to jump it and thats didnt work so towed to dealer and they replaced battery unde warranty might want to do the same!

torqueaddict · 10-22-2018, 11:36 AM

If you've never replaced the battery since you've had the issue, then do so first.

brandonms2ss · 10-22-2018, 11:36 AM

Its not a battery issue though. I've tested the battery and it passes.

Bad Anvil Garage · 10-22-2018, 12:31 PM

Quote:

Originally Posted by brandonms2ss

Its not a battery issue though. I've tested the battery and it passes.

The key fob battery, not the car battery.

MarkC · 10-22-2018, 01:34 PM

Next time it won't start use a hand held voltmeter to see what the car battery is at BEFORE you connect jumper cables.

17rsvert · 10-22-2018, 06:13 PM

Continually check your voltage while you drive for a while. My battery has died also and needed external charging. Since then, I have been watching my voltage while I drive and it does some strange things. I notice that a lot of times the voltage stays at 12.1 to 12.2 volts for long periods of time. On one trip, I drove highway speeds for almost 3 hours and the voltage stayed between 12.1 and 12.2 only briefly going above 13. Something did not seem right, so after letting it sit overnight, I checked the battery with a volt meter the next morning and it read only 11.9 V. The morning after that it was dead, 5 V. Other more recent trips, the voltage reads between 13.2 and 14.5 only once in a while reading 12.1 volts. I think this is the way the charging system should behave all the time. My dealer checked the system and battery when I brought it in for other service and they found nothing wrong, but said they would need it for at least 2 days to fully diagnose it.
Please post your voltmeter observations, I'm curious if you see the same things I see.

ctrlz · 10-24-2018, 10:48 AM

Quote:

Originally Posted by brandonms2ss

I've had this weird electrical issue since I bought my 2016 A8 2SS.

Have you installed any aftermarket lighting or replacement bulbs like LED's? if not, then I agree with others and suspect the battery first.
As for your battery "checking out fine," that may well be the case. It sounds like you have an intermittent electrical problem. These always "check out fine" when you don't have the problem!
You could, for example, have a cell going in and out in the battery. Each cell is good for about 2 volts in a car battery, and the car won't start with 10 volts.

wwiiavfan · 10-24-2018, 06:39 PM

Quote:

Originally Posted by brandonms2ss

Its not a battery issue though. I've tested the battery and it passes.

Battery can test fine and still be junk. Happened to several people on here. Me included.

martelds · 10-24-2018, 06:49 PM

I had this issue. GM Changed out my battery. Event thought the battery tested fine. It was in normal range. Problem went away and has not come back.

torqueaddict · 10-24-2018, 10:30 PM

Quote:

Originally Posted by wwiiavfan

Battery can test fine and still be junk. Happened to several people on here. Me included.

SnakeEyeSS · 10-24-2018, 10:31 PM

Quote:

Originally Posted by wwiiavfan

Battery can test fine and still be junk. Happened to several people on here. Me included.

I had a Tahoe that was finicky, battery tested fine, all lights and electronics worked as if the battery was at full power, but it wouldn't turn over, luckily I was at a store that sold car batteries when it happened. Now WHY GMs are especially finicky, I don't know, most other newer cars will at least read low voltage or the IC will go into possessed mode for a few seconds.

torqueaddict · 10-24-2018, 10:41 PM

^^Well, I've seen this happen to at least 3 of my previous cars and they weren't GM. It can happen to any car.

brandonms2ss · 10-25-2018, 12:48 PM

Left the car at the dealer. They had a TSB to remove some adhesive. That it was over used during the build process. Not sure, they did not say much. So far so good, will see within a few weeks if it is a solid fix.

10-22-2018, 10:59 AM	#1
brandonms2ss Drives: 2016 Camaro 2SS Join Date: Nov 2017 Location: California Posts: 40	Car won't start every day. I've had this weird electrical issue since I bought my 2016 A8 2SS. I daily drive my car and every other month my car does not want to turn over. I have a jumper in my car, so I just jump it up when it happens. The weird thing is that it does not happen again for another 3-4 weeks. Dealer said they would have to keep the car to diagnose the issue. Any ideas?? Thanks in advance.

10-22-2018, 11:27 AM	#2
kropscamaro16 Drives: 2016 1ss camaro Join Date: Feb 2016 Location: 909 Posts: 9,813	i have a 16 ss with 25k miles on it and i just had both my fobs die and couldnt start car tried to jump it and thats didnt work so towed to dealer and they replaced battery unde warranty might want to do the same! __________________ 16 1SS NIGHTFALL GRAY METALLIC WITH NPP #BECAUSERACECAR #SAVETHEMANUALS

10-24-2018, 06:49 PM	#10
martelds Go Arizona Cardinals Drives: 2006 GMC Duramax 2500 HD, 2016 2SS Join Date: Sep 2015 Location: Arizona Posts: 321	I had this issue. GM Changed out my battery. Event thought the battery tested fine. It was in normal range. Problem went away and has not come back. __________________ 2015 Nissan Murano SL with Tech Package 2006 Lifted GMC Duramax 2500 HD. Lot's of custom parts! 2016 2SS Garnet Red 2SS,6 Speed, NPP, MRC, Adrenaline Red interior, Black Rally Stripes, NAV, Sunroof, Corvette Z51 Black Wheels, Black Front Fascia, aFe / PFADT Suspension Lowering Springs, Black High Rise Rear Spoiler. High flow headers, E85, Roto-Fab Cold Air, MSD Atomic AirForce Intake. aFe / PFADT Front & Rear Sway Bar. Pushing 520 to the Rear Wheels

10-22-2018, 11:36 AM	#3
torqueaddict Drives: Tesla M3 LR-AWD [Former 1SS owner] Join Date: Jan 2018 Location: Miami Posts: 950	If you've never replaced the battery since you've had the issue, then do so first.

10-22-2018, 01:34 PM	#6
MarkC Drives: 2018 HBM 2SS/1LE Join Date: Jun 2018 Location: 29860 Posts: 85	Next time it won't start use a hand held voltmeter to see what the car battery is at BEFORE you connect jumper cables.

10-22-2018, 06:13 PM	#7
17rsvert Drives: 2017 HBM 2LT RS Convertible V6 A8 Join Date: Jan 2018 Location: NJ Posts: 654	Continually check your voltage while you drive for a while. My battery has died also and needed external charging. Since then, I have been watching my voltage while I drive and it does some strange things. I notice that a lot of times the voltage stays at 12.1 to 12.2 volts for long periods of time. On one trip, I drove highway speeds for almost 3 hours and the voltage stayed between 12.1 and 12.2 only briefly going above 13. Something did not seem right, so after letting it sit overnight, I checked the battery with a volt meter the next morning and it read only 11.9 V. The morning after that it was dead, 5 V. Other more recent trips, the voltage reads between 13.2 and 14.5 only once in a while reading 12.1 volts. I think this is the way the charging system should behave all the time. My dealer checked the system and battery when I brought it in for other service and they found nothing wrong, but said they would need it for at least 2 days to fully diagnose it. Please post your voltmeter observations, I'm curious if you see the same things I see.

10-24-2018, 10:41 PM	#13
torqueaddict Drives: Tesla M3 LR-AWD [Former 1SS owner] Join Date: Jan 2018 Location: Miami Posts: 950	^^Well, I've seen this happen to at least 3 of my previous cars and they weren't GM. It can happen to any car.

10-25-2018, 12:48 PM	#14
brandonms2ss Drives: 2016 Camaro 2SS Join Date: Nov 2017 Location: California Posts: 40	Left the car at the dealer. They had a TSB to remove some adhesive. That it was over used during the build process. Not sure, they did not say much. So far so good, will see within a few weeks if it is a solid fix.

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