2021 Cadillac CT5 electrical problems

Filed Oct 14, 2026 · Body, Electrical · IL

This vehicle is equipped with electronic door handles that are failing widely and prematurely. Essentially the button that actuates the cylinder to allow the door to open fails. This poses a safety risk as you're unable to open the door from the exterior in the event of an emergency. Imagine if you were in a collision that resulted in a fire and you needed to be able to retrieve a young child from the vehicle but the door won't open. This is a lawsuit waiting to happen. Manufacturer doesn't care to address the concern with a recall, but rather offers to repair at an astronomical price tag. The problem appears suddenly with no warning.

Filed Sep 21, 2026 · Electrical · NJ

I have experienced a serious and recurring safety issue with the door handles on my Cadillac CT5 vehicles. The exterior door handles have stopped working, preventing the doors from being opened normally. On one occasion, I was trying to get my child out of the back seat when the rear door handle failed and would not open. Because the child safety lock was engaged, my child was also unable to open the door from the inside. I had to climb through the vehicle and use another door to get my child out. This situation is especially concerning because, in an emergency such as a collision, fire, or other situation requiring immediate evacuation, a malfunctioning door handle combined with the child safety lock could prevent a child from exiting the vehicle and could significantly delay a parent or caregiver from getting them out. I have two Cadillac CT5 vehicles, and this same issue has occurred on both vehicles. I have also been told by Cadillac dealers that the door-handle failure is a known problem. Despite the recurring nature of the issue, I understand that Cadillac has not issued a recall for the door handles. Instead, individual door handles must reportedly be replaced every two to three years, with repair costs ranging from approximately $400 to $1,000 depending on the door. I believe this issue warrants serious attention because it involves a potential safety hazard, particularly when a child is secured in the back seat with the child safety lock engaged. A component that can prevent a vehicle door from being opened during an emergency should be reliable and durable, and recurring failures across multiple vehicles raise significant safety concerns.

Filed Sep 20, 2026 · Electrical · TN

The exterior door handles on my 2021 Cadillac CT5 have experienced the same intermittent failure. The handles initially work intermittently and then become unable to release the door. The button on the inside of the door handle doesn't respond when pushed and that is the only way to get in the car without rolling the windows down or using the emergency key. I've seen many other forum posts about this so it seems to be a widespread issue across other models with the same electric door opener mechanism. This creates a serious safety concern for me because occupants may be unable to enter the vehicle normally, and emergency responders may be unable to access occupants through the affected doors. This appears to be a systemic defect affecting multiple CT5 vehicles, rather than an isolated component failure.

Filed Sep 17, 2026 · Electrical · TX

Doors have routinely stopped opening using the electronic handles to pop open doors. Have taken to dealership to repair, but keep on not working on other doors. All 4 door handles have been replaced and now they're starting to not work again.

Filed Sep 17, 2026 · Electrical · NE

Both front doors will no longer open from the outside. The button on the inside of the door handle doesn't respond when pushed and that is the only way to get in the car without rolling the windows down or using the emergency key. I've seen many other forum posts about this so it seems to be a pretty widespread issue across other models with the same electric door opener mechanism.

Filed Aug 31, 2026 · Body, Electrical · NJ

All four exterior door handles on my 2021 Cadillac CT5 have experienced the same intermittent failure. The handles initially work intermittently and then become unable to release the door. This has occurred on all four doors. This creates a serious safety concern because occupants may be unable to enter or exit the vehicle normally, and emergency responders may be unable to access occupants through the affected doors. This appears to be a systemic defect affecting multiple CT5 vehicles, rather than an isolated component failure.

Filed May 18, 2026 · Electrical · TX

We own a 2021 Cadillac CT5 that we bought used in 2024 from Sewell Cadillac in Houston, Texas. During our first year of ownership, and while still under warranty, we started having intermittent issues with the rear doors. At times, one or the other rear doors would only open from the inside of the vehicle. My wife mentioned it to the dealer when the car was in for other issues, but because we couldn’t reproduce it at the dealership, nothing came of it. Then in March of this year, both rear doors completely failed. Neither rear door will open from the inside or the outside, and they are still that way today. We took the vehicle back to the dealer, and they performed a software update and sent us a service video. In that video, the technician described the issue as “weird” and not something they had seen before. After a couple of days, the dealer came back and said both rear exterior door handles need to be replaced, with a repair quote of $3,950.49 (for their trouble, they also charged us $265.00 to diagnose the issue). What really shocked me was that, because neither rear door will release from inside or outside, their quote indicates they would have to cut through the interior door panels just to open the doors and perform the repair. The more I researched this, the more it became clear that this problem is not “weird” at all — it appears to be a frequent issue with the CT5, with multiple owners describing similar door-handle failures and forum discussions suggesting it may be a well-known weak point rather than an isolated event. We frequently transport our granddaughter in this vehicle and that can't be accommodated until the issue is resolved with Cadillac. I don't think I can even imagine all of the potential safety implications of this type of failure should this have happened when anyone, much less a child. They would be trapped in the rear seat of the vehicle and possible strapped to a car seat. I can't imagine a better case for a recall, honestly.

Filed Apr 1, 2026 · Electrical · OH

The door(s) would not open from the outside. I had the driver side door handle replaced first - took weeks for the part to come in - this was a safety issue because I had to climb through the passenger side to open the driver side door. (the key entry would not work either) After weeks, and me paying for it, the same thing happened to the rear driver side door. I went to open it to get my grandchild out and couldn't. Again this is a safety issue. What if I needed him out in an emergency and I couldn't. I had to walk around and get him out of the car on the other side. Now my passenger door is broke. This is a big concern, which I let the dealership know about, the safety if you can't get someone out of a car or just getting in your car - a person is vulnerable to outside elements/surroundings. The dealership has said this is a very common problem with this make/model. If "very' common it should be recalled. They shouldn't be waiting for something bad to happen prior.

Filed Feb 24, 2026 · Electrical · TX

I've had my driver side door handle switch replaced beacuse it was faulty and I could not get into my car through the driver side. Now I am having the same issue with the passanger side. In a case of an emergeny if I can not get into my car I fear for my or my passanger's safety. I fear the quality of the parts are not ment to last. I replaced the driver side handle right before the manufactur warreny ran out then the passanger door stopped working when the warrenty ran out.

Filed Jan 16, 2026 · Electrical · MA

The passive door locks on the handles to the car do not work. The electronic sensor to unlock the car does not work due to misalignment of the pin that is supposed to press the key. This is a widely known issue on 2020-2021 Cadillac ct5 vehicles. This eventually results in total lockout of the vehicle. I currently have three doors that do not unlock. Please see a link to the issue I reported on Cadillacs form website as well https://www.cadillacforums.com/threads/door-handle-issues.1141023/?nested_view=1#post-18436706