2021 Yukon - No Key Found - No Start Condition (update 11/9)

[fondupot]

I may have Sams club do mine. They do a great job and you are out of there quickly if you are there when they open in the morning. They sell the same battery...
Post your video here when you make it.....

Yea I wanted to get the battery from Sams too. But my local club didn’t have any in stock. It was like $50 less too compared to Batteries Plus where I got mine.

 

[tagexpcom]

I actually meant in your truck, do you have a new battery in your truck?

Yes, one of the 1st things I did was put in a brand-new battery as my experience has been ~5yr life spans for my 2004 Cadillac SRX and 2011 CTS. I wanted to start the clock fresh on this used Yukon purchase because who knows about previous battery and so I can be extra alert in year 4-5.

 

[fondupot]

knock on wood, the truck performed admirably today, several start and stops no warnings.

 

[mike singleton]

Decided to replace the battery. It was the original battery from made in April 2020. Yikes.

Had the battery place test it and it came up as a bad battery. Hopefully that was all that was causing the issues.

Put a new Duracell Platinum 94R AGM in. Went in easy, fit like OEM. Started up and went for a drive. No errors on shut down. Will try a few more drives over the next few days.

Great move on going with an AGM! That's the only way to go on these newer trucks.

 

[NELLY1947]

Yes I see. It. should be fine after you reconnect the car battery.

I have a 2023 xl Denali.
Due ro stuff i have every so often when GM tries to send updates my truck goes dead. The first sign is the foot boards don't deploy. Just keep an 8mil socket in the truck undo the negative and wait 30 seconds. This erases any code in the computer. as i said not the trucks fault it the anti theft stuff i have. I can kill the truck anywhere when it stops moving for 10 seconds. It's worth the trouble. IMO

 

[TxVet33]

up my '21 YUKON SLT XL was giving me a 'no key' message, same thing happened to my Daughter in her Lincoln. I replace battery with Walmart's best battery and all that BS stopped. Great advice from the pro's here on TYF.com & everyday users. Thx. I put 'check Yuke' battery on annual reminder in my phone.

 

[fondupot]

Great move on going with an AGM! That's the only way to go on these newer trucks.

Believe it or not, the OEM battery was also an AGM, I was surprised. But yea, I put another AGM in as well.

I have a 2023 xl Denali.
Due ro stuff i have every so often when GM tries to send updates my truck goes dead. The first sign is the foot boards don't deploy. Just keep an 8mil socket in the truck undo the negative and wait 30 seconds. This erases any code in the computer. as i said not the trucks fault it the anti theft stuff i have. I can kill the truck anywhere when it stops moving for 10 seconds. It's worth the trouble. IMO

Strange you shouldn't have to do that. Maybe check your battery, i know yours is a 2023, but who knows maybe its bad. Also 10mm is the neg battery cable for clarification. I've put a nut driver in the glove box...just in case.

up my '21 YUKON SLT XL was giving me a 'no key' message, same thing happened to my Daughter in her Lincoln. I replace battery with Walmart's best battery and all that BS stopped. Great advice from the pro's here on TYF.com & everyday users. Thx. I put 'check Yuke' battery on annual reminder in my phone.

Right on! Good idea to check the battery on a yearly schedule, can't hurt I guess.



On a side note, IDK how much stock this holds, but I purchased a couple of Faraday pouches for the key fobs to be stored in when they aren't being used in the truck. I ready somewhere that if the key fobs are within a certain distance of the truck, it will continually "check in" with them, and that could cause some parasitic drain. We store the fob within about 10' of the truck, just inside the door to the garage. Again, dunno how true that actually is, but the Faraday pouches were cheap, and it blocks the key fob from communicating with the truck when it's parked and not in use in the garage.

These are the ones I bought. https://amzn.to/4fK6GwD

 

[fondupot]

Just a quick update, truck has had several trips without issue. I'm fairly confident now it was just the battery.

Here's a quick HOW TO for anyone interested.

 

[tagexpcom]

Just a quick update, truck has had several trips without issue. I'm fairly confident now it was just the battery.

Here's a quick HOW TO for anyone interested.

Did you get that ear-splitting screech (alarm?) when you disconnected the negative terminal? or is this just me and my 2021. It's not mentioned in the youtube.

 

[fondupot]

Did you get that ear-splitting screech (alarm?) when you disconnected the negative terminal? or is this just me and my 2021. It's not mentioned in the youtube.

No I didn’t get anything like that.

 

[jerry455]

I thought I read that the stock battery is an AGM. I beleive any auto stop vehicle uses one. The 5th and 6th Gen Camaros used them also.

 

[fondupot]

I thought I read that the stock battery is an AGM. I beleive any auto stop vehicle uses one. The 5th and 6th Gen Camaros used them also.

Yea the stock battery was also an AGM.

 

[fullyloaded]

Sounds like I have the same issue with my 2021 Suburban no key found. I just checked my battery and I'm getting 12.2 volts. I'm wondering if there is a threshold voltage that won't let you turn your car on and thus the "No Key Found". I'll be picking up a battery tomorrow to see if that fixes the issue. Thanks for the earlier post it helped get me to this point.

 

[fondupot]

Sounds like I have the same issue with my 2021 Suburban no key found. I just checked my battery and I'm getting 12.2 volts. I'm wondering if there is a threshold voltage that won't let you turn your car on and thus the "No Key Found". I'll be picking up a battery tomorrow to see if that fixes the issue. Thanks for the earlier post it helped get me to this point.

Probably so. I haven’t any any oddities since replacing the battery. Hopefully it works out for your too.

 

[jfoj]

Sounds like I have the same issue with my 2021 Suburban no key found. I just checked my battery and I'm getting 12.2 volts. I'm wondering if there is a threshold voltage that won't let you turn your car on and thus the "No Key Found". I'll be picking up a battery tomorrow to see if that fixes the issue. Thanks for the earlier post it helped get me to this point.

A fully charged battery has around 12.6 Volts, some battery technonolgy/chemistry is slightly higher . A battery that measures out at 12.2 Volts is typically less than 50% state of charge. But state of charge is not always an indication that the battery is good. If general use of the vehicle you measure 12.2 Volts, this likely means the battery has an internal discharge.

Understand that batteries decline with age but sometimes can avalanch and fail without much notice.

With newer vehicles and all the electronics overall after 3 years IMHO you are on borrowed time with a battery. The power it takes to run the fuel pump, computer, ingition coils and all the computers and electronics in these modern vehicles is crazy.

The original battery may even have a short lifespan because the battery is older than the build date of the vehicle. If the vehicle sat around in transport and on the dealer lot for months, parasitic draw and the age of the battery may mean the original battery could be problematic at an earlier age.

I have a number of higher quality battery testers and typically check my batteries a few times a year to monitor their health and usually try to proactively replace them once the battery capacity is below 75%. Some may think 75% is fine, but this means the battery has lost 25% of its capacity and you have no idea exactly why and if there are internal faults the battery could self discharge without much notice. The price of a battery vs the cost of a tow, jump start and the inconvienance is just not worth taking chances to me.

The other thing I tend to do is put a maintenace charge on my vehicles usually at least 1-2 times a year jut to make sure the battery is fully charged if I have been making a lot of trips around town or the vehicle has been sitting.