How to Start a Jeep with a Dead Key Fob
Starting Your Jeep
- But first, if you are still locked out, click here for help getting inside!
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In Jeep 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 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!
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Technology is always changing and what is current and accurate today may be literally out-of-date and inaccurate tomorrow.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
Retrieving the mechanical key
The Key Fobs used in models built after 2010 are sleeker and rounded (see the image to the right) but work the same way. Slide the mechanical latch at the top of the back of the Fob to the side and pull the emergency key out with your free hand.
In 2023, the Fiat 500X will be hiding its keyhole behind a small cap in the handle recess (see image). The cap is easily removed with a fingernail, using the access hole shown to the right. Once removed the use the mechanical key in the keyhole to unlock the door, and you’ll be inside.
To remove the emergency (mechanical) key from the key fob in new Wagoneer models look for a chrome button on the side, as denoted by the bottom arrow. Push it and pull on the key ring end, and the mechanical key is removed.
New Wagoneer and Grand Wagoneer models have their key holes hiding behind the driver’s door handle, as can be seen in the image to the right. It is exposed when the door handle is pulled to the open position. So, simply pull the door handle out as far as possible. Insert the mechanical key (it may be awkward to get at) and turn it to unlock. Remove the key blade and release the handle. Pull the handle once again and you are in the car.
Early Audi models use a slot in the dashboard but do not use a Start/Stop button. The fob itself is pushed to start or stop the car. If the key fob battery is dead, the vehicle will already recognize the fob when inserted.
In models that do not feature a slot for the fob, look for the symbol of a key with lines radiating from it, as shown. It will be to the right of the steering column on the dashboard (Audi) or on the right side of the steering column itself (VW).
In 2018, the mark is moved to the driver’s side cup holder in the Audi A5 and Q5. This is also true of the A3 and Q3 beginning about 2021. The all electric eTron GT uses this mark as well. The mark is smaller and shaded and so a bit difficult to see. As with the Q7, the key fob can be dropped into the cup holder, and starting the car becomes a one hand (and one foot) operation. Press the Start/Stop button while stepping on the brake. It took two tries to before the key fob was recognized in our test car, but it did work.
However, in 2019, the A5 now has the mark at the front of the center console storage area, as shown to the right. Again the key fob can be dropped onto the spot, and starting the car needs only a single hand (and foot). Press the Start/Stop button while stepping on the brake. Our test car started first time in this case.
The new (2019) Q8, and now the Q7, also has the marking in a cup holder. It is the front one in this case. However, we noted a slot between the cup holders adjacent to the 12 volt power outlet and shaped very much like the key fob, Sure enough, the fob was recognized when placed inside the slot.
Models are now being electrified. The e-tron GT uses the front cup as in the images above. However, the original e-tron and e-tron Sportback the mark is found in front of the of the cup holders (right). We have not had access to all electric models, but a back up location will likely be found in or near the cup holders.
By 2023, the A4 and S4 models sport the mark on the center console, just in front of the console storage area.
The mark in Volkswagen’s new ID4 EV, the mark is moved to the front area of the center console. This follows the trend in Audi models. Originally, the front area is for storage and has removeable spacers. We found the mark by removing the front spacer (first image). Later, the same area was converted to cup holders. The mark is found in the first cup holder (closest to the driver) (second image).