General Motors key fob battery
General Motors key fob batteryWe recently added a new video replacing a General Motors key fob battery. The fob is used in various Buick, Chevrolet and GMC models and Cadillac uses a mirror version of the same fob.
The fob uses a larger battery than is typically seen, a CR 2450. It will last longer than the more common CR 2032. The embedded mechanical key and the tip of a very small screwdriver will be needed as tools.
The video has been added to our Buick, Cadillac, Chevrolet and GMC, and pages here, here, here, and here respectively. Overall, we now have a seven videos that help drivers of GM models in the event that the battery in the key fob dies. These videos will help you get in and start your vehicle even if it is not responding to the key fob, as well as replacing the battery in the fob.
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Remember that only proper service and repair procedures will ensure the safe and reliable operation of your car. In addition, proper safety procedures and precautions, such as the use of safety goggles, the right tools and the equipment should be followed at all times to eliminate the possibility of personal injury or improper service which could damage the vehicle or compromise its safety.
These posts are for information sharing purposes only, and should not be used in lieu of an OEM service manual or factory authorized service procedure. We are not in the auto repair business nor do we publish automotive service manuals. Nothing we include on these pages and posts has been reviewed, approved or authorized by any vehicle manufacturer.
Technology is always changing and what is current and accurate today may be literally out-of-date and inaccurate tomorrow. And when it comes to the current state of flux in the auto industry, nothing is more true.
The author has 25 years of automotive experience and has assembled the most extensive collection of symbols and warning lights anywhere (over 1,000!) and can help you open and start any keyless start car with a dead key fob battery. BA, St. Joseph’s College, ME: MS, Rensselaer Polytechnic Institute, NY
An Actual Death Trap
electronic everything, right down to the door latches. It is also the result of very, very poor design.
up option, it is not remotely obvious and effectively not intuitive.
been out of his car much sooner.
inside. I immediately pointed out that there IS a way out — just not where you would expect to look. The unlock button is placed in the middle of the dashboard, and the entire group was clearly unfamiliar with this quirk in a BMW. And it belongs exclusively to BMW.
Back to technology and design, Tesla’s vehicles all feature electronic latches. As to getting out, the rear doors in the Model S require pulling a cable located under each rear seat. The front doors are released mechanically from the inside.
The latest Lincoln Continental also has electronic door latches. A back up release is just below the armrest but still on the door, and only the driver’s door. However, Lincoln says that the doors will not remain latched if the power goes out.
Here’s the deal: Buckle up, find your model, and if the main start battery is still good, we’ll get you underway.
With Style 1 (square) key fob, used in most GM vehicles prior to 2014, and in some Cadillac CTS Coupes and Sedans ongoing, place the transmitter in the transmitter pocket at the top and rear of the center console storage area with the buttons facing towards the front of the vehicle (right).
The XLR Coupe use either a small key fob that does not hold a mechanical key or the Style 1 fob. Regardless of the key fob type, the pocket for the transmitter (or fob) is on the left of the inside of the glove box. Place the transmitter in the pocket with the buttons facing the glove box storage area (right).
In the Cadillac SRX, the transmitter pocket is located at the bottom of the console storage area (right). The new CT5 crossover uses this location as well, but using the Style 3 key fob. The spot may be beneath a storage tray, which must be lifted out, or at least beneath all the stuff that has gathered inside. Then insert the transmitter with the buttons facing up and with the vehicle in Park or Neutral, press the brake pedal and the Start / Stop ignition button as normal.
The new key style, Style 3, was introduced in 2014. In the ELR Coupe and some CTS Sedans and Wagons (later models all use this location), locate the transmitter pocket on the shelf in the front of the console, as shown to the right. It is beneath a rubber that will need to be removed, and is the shape of the transmitter. Place the transmitter in the pocket, buttons facing up, and with the vehicle in Park or Neutral, press the brake pedal and the Start / Stop ignition button as normal.
In the XTS sedan, the transmitter pocket is found in the front of the center console storage area. A storage tray may have to be lifted out. Place the transmitter in the pocket with the key ring up and the buttons facing out. See the image below. With the vehicle in Park or Neutral, press the brake pedal and the Start / Stop ignition button as normal. Check out the video 
In ATS sedan, the transmitter pocket is located in the face of the front of the inside of the center console, similar to or as shown to the right. Slide the transmitter into the pocket with the key ring facing out and buttons up. With the vehicle in Park or Neutral, press the brake pedal and the Start / Stop ignition button as normal.
In the CT6 sedan, the transmitter pocket is located in the center console as well, but in the face of the back of the console, as shown to the right. Slide the transmitter into the pocket with the key ring up and buttons facing the front of the car. With the vehicle in Park or Neutral, press the brake pedal and the Start / Stop ignition button as normal.
previously in a Cadillac model. And the Escalade went along for the ride.
Meanwhile, the new CT4, CT5 and Lyriq EV models, for no apparently good reason, use the rear cup holder as the back up start location. Again, make sure the cup holder is empty and that the key fob’s buttons are facing up. With the vehicle in Park or Neutral, press the brake pedal and the Start / Stop ignition button as normal to start the vehicle.
In the XT5 and XT6 SUVs, clear away anything being stored in the center console. At the bottom near the back, there is a depression shaped like the Cadillac key fob. Set the fob down in the depression with the buttons facing up. With the vehicle in Park or Neutral, step on the brake pedal and press the Start / Stop ignition button as normal.
pocket also located in the face of the front of the inside of the center console. However, the pocket points down, as shown to the right. The pocket in the Escalade is placed to the center and a bit lower. Slide the transmitter into the pocket with the key ring facing out, buttons forward (in a Suburban we had on hand, the engine started with the buttons facing either way). It is a loose fit, so don’t be concerned. With the vehicle in Park or Neutral, press the brake pedal and the Start / Stop ignition button as normal. Check out the video 
message to Step on the Brake. Press the brake pedal very, very hard when trying to start the vehicle again to be sure that the release switch behind the pedal is engaged. Or wait a few minutes and try again.
fob (remote control or ‘clicker’) styles, and two (GM Styles 1 and 3) have mechanical keys embedded inside. That key will be used to unlock the driver’s door or the trunk (yes, the trunk) and in some cases to remove a piece of the car!
The Style 3 key fob is similar to Style 1, in that the mechanical key is removed from the fob for use getting into the vehicle. To remove the mechanical key, press the button on the side of the transmitter near the key ring, as shown, and pull out the key.
Many GM models hide the key holes under a cap at the back of the driver’s door. They include the Cadillac CT4, CT6, CTS, XT4, XT5, XT6, XTS and ATS. 
key hole. The cylinder is hidden in the same place and manner, but the cap is the top, 1/8 of an inch portion. To remove it, the door handle must be pulled fully open. Then, push the cap towards the handle to release it. It may take a bit of force to accomplish this. See two videos 
Then in 2020, Cadillac came up with a whole new cap. As with the first style, there is a slot beneath the cap (right). The handle is first identified by its more curved appearance front to back and a separation near the top. Only the bottom can be removed. It is found on the Escalade and CT5.
cover frees. It will pop out about 1/8 of an inch. Remove the key – do not pry or pull with it. Once free, the cap simply swings up and can be pulled away (right).
The CTS, XLR and ELR Coupes have flush door handles (left image) with no key holes
at all. They have a very different trick up their sleeves.
We have two videos for coupes
Does Your Owner’s Manual Have a Troubleshooting Guide?
How Deep Is Your Owner’s Manual?
We’ve done a couple of owner’s manual rants and got to thinking about where the average driver might look in their respective manual if they ran into trouble, specifically with dead or dying key fobs.
So, we examined a sampling of owner’s manuals from BMW and Mini, Fiat Chrysler, Ford, GM, including Buick, Chevrolet and Cadillac, Honda and Acura, Kia and Hyundai, Land Rover and Jaguar, Mazda, Mercedes Benz, Nissan and Infiniti, Subaru, Toyota and Lexus, Volkswagen and Audi and Volvo. And since we are adding this commentary, you can probably guess the results.
To Index or Not to Index
Next, we looked to see if there was an index to resort to. Several, BMW, Land Rover, and Ford, for instance, have no indexes at all. So if someone out there is from these companies, please consider adding that in. On the other hand, the indexes we did find were no help at all with dead key fobs.
The Honda and Acura chapters point to an issue with the key fob being weak. This may not be immediately obvious to the operator, but it would be a likely spot to check out if the car wasn’t responding.
Absolutely none of the other manufacturers point directly to the electronic keys in anything remotely like a troubleshooting chapter. To be clear, they all have the solutions shown, but the driver is left to contend with 400, 500 or 600 pages of information to get to what they need.
So for all of them, walk a mile in your customers shoes and try to think like someone who simply doesn’t understand what is wrong. Then make a Troubleshooting chapter and forget the clever titles like Handling the Unexpected or Volkswagens do it yourself chapter, which is where they keep breakdown assistance.
The closer your cars get to being rolling computers, the more relevant an actual Troubleshooting chapter will be to your customers.
——————————————————————-
Remember that only proper service and repair procedures will ensure the safe and reliable operation of your car. In addition, proper safety procedures and precautions, such as the use of safety goggles, the right tools and the equipment should be followed at all times to eliminate the possibility of personal injury or improper service which could damage the vehicle or compromise its safety.
These posts are for information sharing purposes only, and should not be used in lieu of an OEM service manual or factory authorized service procedure. We are not in the auto repair business nor do we publish automotive service manuals. Nothing we include on these pages and posts has been reviewed, approved or authorized by any vehicle manufacturer.
Technology is always changing and what is current and accurate today may be literally out-of-date and inaccurate tomorrow. And when it comes to the current state of flux in the auto industry, nothing is more true.
The author has 25 years of automotive experience and has assembled the most extensive collection of symbols and warning lights anywhere (over 1,000!) and can help you open and start any keyless start car with a dead key fob battery. BA, St. Joseph’s College, ME: MS, Rensselaer Polytechnic Institute, NY