Thanks. This is well-known but not by everybody.

This is because the SD card only works for the surround video if the card is formatted to the FAT32 standard. Unfortunately, FAT32 is (normally) limited to memory devices up to 32GB. Beyond that, Windows will use the exFAT standard.

For cars equipped with the performance data recorder (mine has this), those operate just fine with larger cards formatted to exFAT.

 

I had the same problem, dealer had no idea what was wrong and I figured it out . It must be FAT 32 format, hopefully Cadillac will fix this problem. BTW this is a problem on all surround videos.

 

I have a 2023 CT5-V. I grabbed the card I used in my 2018 CT6 from the trunk area for the Surround Video Recorder. I plugged it into my CT5-V and it was not recognized. I was totally surprised. One day I was sitting in a parking lot and wondering about this thing called Performance Data Recorder. It stated that there was no SD Card present. I thought, I wondered about the card in the trunk. I pulled it out and inserted it in the Dash receptacle for the PDR. And again surprised. It worked. I wish I could remember how This SD card was formatted. I am pretty sure it is 64 GB. Why does it work in one SD slot but not the other? Yeah, I know, A thousand reasons why and a thousand reasons why not.

 

The surround recorder needs to be formatted to FAT32 - which is limited (normally) to a 32GB card. The resolution is not great so 32GB should be acceptable there. The PDR, on the other hand, is far higher resolution and is not restricted to FAT32 - which is why your 64GB card will work there.

 

To be clear....

I need two SDs? Im mostly interested in playing with the performance features...but there is another for dash cam and surround. Does the car format the cards? Not a cpu guy. Never heard of FAT 32 and dont much care to learn.

My car is in my sig. If anybody wants to tell me what i need and throw a link to the best available, I'd appreciate it.

TY

 

If you have the PDR option, get a 64GB high endurance SD card and put it in the slot to the left of the steering wheel. If you want to use the surround view recording function, get a 32GB high endurance card (they come formatted to FAT32) and put it in the slot in the trunk.

In the menu, you can select to have the PDR come on every time you start the car - and it behaves much as a forward-facing dashcam. Honestly, you don't need a high capacity card there as it just keeps recording over itself - if you really want to view something, just pop out the card and read it from your computer (you'll need a USB SD card adapter).

 

Time for a mea culpa. The SD card I have been referring to, that I thought was a 64 GIG, is actually a 32 GIG formatted as FAT32. Now I am even more in a quandary.

 

Try reformatting as it could have some sort of problem.

 

I went to Best Buy after some further exploration on their website. I picked up a 32 GIG format in FAT32. I inserted it in the slot in the trunk. I started the car and still no joy. It must be the device in the car. My computer read the card perfectly when I checked its properties.

 

Disregard, somebody already told me the answer. Missed it.

 

I have a 2023 CT5 550T and I have been having trouble with the surround video recorder. I bought the correct sd card and formatted it. I still kept getting the message “No card detected” I tried a 64gb and an 32gb….Nothing! I called the dealer and he walked me thru the steps, of which I did properly. Next step was to bring the car back to the service department. I went out to my car and decided to try each of the SD cards again! I put in the 32gab SD card one more time and I shut my trunk,got in the car and Ta-Da, it’s working. I had inserted the card several different times and around the tenth time it worked! So happy.

 

I'm glad it worked out for you. Must have been frustrating. Welcome to the forum.

 

How many SD cards slots are in the car? 1 in the trunk (surround video 64gb or larger V30), 1 in the console (Nav) 1 to the left of the steering wheel for the PDR?

 

I know this might/is a little late to the Party, but my dealer replaced the reader in my trunk and now all is well.

 

I had to format a card 128KB on my PC to the FAT format. It works. Disappointed the video does not show your current speed.

 

It works with a 4GB

 

What format, surround video not a V?

 

Fat32 just figured out it a lower image quality it can’t be a HD HQ

 

The key is to format the disc to FAT32 which cannot be done with windows OS for a SD card larger than 32GB. You will have to use a 3rd party format app to format an SD card larger than 32gb to FAT 32. I just did it to a 128gb SD card and it works fine.

 

Mine does not work with a 32, 64,128, or 512

 

Late to the party, but if you happen to see this…what third party did you use to do this?

 

I've used Rufus in Windows to format large flash drives to FAT32. It's a well-known veteran tool in the Windows community for any number of flash-drive creation challenges.

Just make sure you carefully select your flash drive (versus your hard drive) as the desired device, set the "boot selection" to non-bootable, set the "file system" to FAT32, and ignore the other options.

 

Thank you a ton!!