How to Start a Chrysler, Dodge or Ram with a Dead Key Fob
Starting Your Chrysler, Dodge or Ram Vehicle
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In Chrysler and Dodge vehicles built prior to 2009 and using the rectangular-tipped key, the Engine Start / Stop button must be removed from the ignition switch for key fob use. With the ignition in the Lock position, insert the metal part of the emergency key (or a finger nail!) under the chrome button (above right) and gently pry the button loose. It comes away very easily. Note that the button itself appears to float 
just above the dash.
Insert the rectangular tip of the key fob into the exposed ignition switch slot and turn the key to start and operate.
For models built after 2010, including Ram trucks, using the rounded key fob, place the “nose” side (side opposite of the mechanical key – its very sensitive to this) of the Key Fob against the Start / 
Stop ignition button (right) and push to operate the ignition switch.
Do NOT try to remove this button! We have actually seen an owners manual citing the older key and button. Do NOT remove the flush button. Simply press the button with the nose of the key fob!
In 2023, Dodge introduced the Hornet model, and it uses a very different back-up start method. The key fob needs to be placed in the front cup holder (rightt). The fob may need to be removed from a key chain to make this work.
Once in the cup holder, simply press the Start / Stop ignition button while stepping on the brake as usual.
We have several videos here that will help.
Note: If you have made an attempt to start the vehicle without success, there may be residual pressure in the brake system and a new warning light may appear (left) or text 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.
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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
There are several methods for starting a Honda or Acura vehicle. To start a Honda and the newest Acura models lacking a slot, touch the “H” in the Honda logo or the “A” in the Acura logo on the remote control to the Start / Stop button until the small indicator light in the button begins to flash. For the next 30 seconds, the vehicle can be started using the Start / Stop button normally. You can also simply press the Start / Stop button with the remote control itself, while stepping on the brake of course.
exactly the same.
In earlier Acura models (newest models are above), there is a slot for the remote control (key fob) to the left and below the Start / Stop button. Insert the remote and use the Start / Stop button to start the vehicle as normal.
In the oldest keyless start Acura models, there is a cover on the ignition switch that must be removed. This will allow the use of the mechanical key built into the key fob. To remove the ignition switch cover, slip the built-in key into the parallel slot underneath the cover. Push the key in while pull it towards you at the same time and the cover will come off. Once the cover is removed, the mechanical key can be inserted and turned to start the vehicle.
Two methods exist in Nissan and Infinity vehicles. Some models use method 1. In this case, insert the Intelligent Key in the port provided. It will be found to the left of the steering column. It might be horizontal (first image) or vertical (second image).
port or with the buttons facing the door in the vertical port. Make sure the key ring side is out.
If a port does not exist, method 2 comes into play. Simply touch the ignition switch with the Intelligent Key (a chime will sound). Push the ignition Start / Stop button while depressing the brake pedal within 10 seconds after the chime sounds to start the engine.
And finally, in the Infiniti QX30, the Start / Stop button appears to ‘float’ above the dashboard. Pull it away exposing the ignition switch. If necessary the tip of the mechanical key can be used as a pry bar.
Some BMW and Mini models already require that the key fob be inserted into the dashboard next to the Start/Stop button. If the key fob battery is dead, the vehicle will recognize the fob when inserted. In “Comfort Access” models, the slot is only needed if the fob’s battery dies, or if electrical interference interrupts the fob’s signal. Insert the fob into the slot and use the Start/Stop button as normal.
For other BMW or Mini models, hold the remote control against the marked area on the steering column and press the Start/Stop button within 10 seconds while depressing the brake.
The smart phone recharge pads also act as new start points. A properly connected key card or a smart phone holding the proper BMW app touched to the pads will allow the car to start. The pad is found in front of the cup holders in the i4 (first image) and on the lower level of the iX console (second image).
The car features a wireless cell phone charging station inside the center console. There is also a bulge into which the Display Key can be slipped, with the lock button up and out. The Key is charged with a micro USB cable, a micro USB port on the Key (see the arrow on the Display Key) and the USB port at the back of the console.
The CX5 was the first model to use Method 3 and by 2016 all Mazda models use this method. Push the brake pedal, or the clutch pedal if you have a manual transmission. This will cause the indicator light in the Start / Stop button to flash green. While it flashes, touch the back side of the key fob to the Start / Stop button, which will cause the green indicator light to stop flashing and remain lit. Push the Start / Stop button to start the engine as normal – or with the fob itself.
Method 2 is found in the CX7, CX9, MX-5 and RX8 models. Remove the Start knob cover by pushing both release buttons and pulling the cover off exposing the key cylinder. Slide the auxiliary key out from the bottom of the advanced key (see above) and insert it into the cylinder. Turn the key to start the engine.
For Method 1, found in the Mazda3 (including MazdaSpeed3) and Mazda6 prior to 2014, slide the auxiliary key out from the bottom of the advanced key (see above). Use the auxiliary key to remove the key slot cover located on the right side of the steering column. Depress the clutch (manual) or brake pedal (automatic) until the ring around the key slot starts flashing. Insert the auxiliary key into the slot while it is flashing, but do not turn the auxiliary key in the slot. Press the push button start to start the engine.
Note: If you have made an attempt to start the vehicle without success, there may be residual pressure in the brake system and a new warning light may appear (left) or text 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.
On the 
The Smart Key can be undocked with the car in Park and the ignition off. Press the Key to release and pull it out.
Found” is displayed, hold the Smart Key close to and below the auxiliary switch pack to the left of the steering wheel on the dashboard and press the Start / Stop ignition button and the brake pedal as normal. A small depression will be found in the correct location.
If it is adjusted manually, hold the Smart Key fob flat against the underside of the steering column, buttons facing down, as shown. Note the markings, three parallel lines, on the steering column that mark to the correct right spot. The Message Center in your instrument panel will display “Smart Key Recognized”. You will need to hold the key fob in place, and press the Start / Stop ignition button and the brake pedal, all at the same time, to start the vehicle. The electric I-Pace uses these markings as well.
If the steering column adjusts electrically, the process is exactly the same, except that the three parallel lines marking the correct spot are moved to the left side of the steering column. Hold the Smart Key fob against the lines with the buttons facing out, as shown. When the fob is in the right spot, the Message Center in your instrument panel will display “Smart Key Recognized”. Again, the key fob will need to be held in place, and press the Start / Stop ignition button and the brake pedal all at the same time to start the vehicle.
However, Jaguar, beginning with the newest Smart Key in the 2020 XE and the 2021 XF and F-Pace, a new location was introduced. The Smart Key needs to be laid flat against the underside of the dashboard, again below existing switches with the buttons facing out. There is an indent in the dash to help identify the correct spot. The key fob must be help against the while stepping on the brake and pressing the start / stop ignition button.
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.
ignition button with the Toyota, Scion or Lexus logo facing the button or switch. Press the Start / Stop button, keeping the brake pedal depressed. You can even press the button with the fob itself.
The new (2020) Toyota Supra is an exception. There is an image of a key with lines radiating from it on the side of the steering column. Hold the back of the remote control (NOT the tip like the image) against the marked area on the steering column and press the Start/Stop button within 10 seconds while depressing the brake.
Another exception is the Toyota Prius in the 2004 through 2009 model years. These cars have a slot beneath the Start/Stop button that will accept the key fob. Insert the fob, buttons up, then press the Start/Stop button while depressing the brake pedal as normal.
A final exception (right) is found in early Lexus LS models. It uses a key fob with a tapered end and a start cylinder that is turned to start the car. In this case, the taped end of the fob is inserted into the start cylinder. The car will recognize the key fob, which can then be used to turn the cylinder.