Is your BMW not starting because the key fob batteries are dead? A dead key fob can be a frustrating experience, especially if you need to drive your BMW. Fortunately, there are alternative methods to start your BMW even when the key fob battery is dead. This article will explore the different methods to start your BMW when the key fob is not functioning. Whether you need a temporary solution or are looking for a long-term fix, this guide will provide the necessary steps to start your BMW and get back on the road. Whether you have a newer model with a push-button start or an older model with a traditional key, we have you covered.


  • You can’t start BMW with key
  • BMW key battery is dead can’t start the car
  • The Comfort Access key does not work

How to Manually Start BMW

Step 1

Remove the emergency key blade from the key fob.

To remove the emergency key from a BMW key fob, locate the small release button or lever on the back or side of the key fob. Once you have located the release button, gently press it or move the lever to release the key. The emergency key should slide out from the key fob. In some models, the emergency key may be stored inside the key fob and require pressing a button or opening a panel to access it. Be sure to handle the key fob and emergency key carefully to prevent damaging the delicate electronic and mechanical components.

Step 2

Unlock the driver’s door with the metal blade. (Alarm may go off.)manually start bmw

Step 3

Place the key into the ignition the keyIf your BMW doesn’t have an ignition slot, place the keyfob (not the metal blade) next to the right of the steering column. Note the key symbol on the steering column.Note the key symbol on the steering column

Step 4

Lexus Won't Start After Replacing

Press the brake pedal, then press the start button to start the engine. If you hear a click from the engine or the engine is not turning over, there is a high probability the main car battery is discharged.

If your BMW doesn’t start, the key isn’t recognized. A check control message may appear on the dashboard stating the key was not recognized. Your key may be defective, or the ignition module has a problem.


  • Radio transmission can interfere with the frequency of the BMW key. Also, electronic devices in your pocket or charging in the car can cause interference with the keyless key fob.
  • Use a BMW diagnostic scanner capable of reading BMW-specific fault codes to read DME fault codes via the OBD2 port under the dashboard.

The YOUCANIC Full System Scanner can read fault code through every vehicle’s control module, including the DME module.

This guide will assist you if the key fob batteries have died or the key fob is not working. If the main BMW battery has died, follow this guide to get into the car, then follow the instructions in this guide to jump-start a BMW with a dead car battery.

We hope you find the How to Start a BMW with Dead Key Fob Battery guide helpful. Check these troubleshooting and repair guides for more help on your BMW.

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  1. Anonymous says:

    Yes I have a 2007 525i I lost the key order a new one from the dealer and it does not work I charge the battery in the car I was wondering if the key Bob battery might be dead it has a rechargeable battery in it so you can’t just change it what to do the dealership said that you need to bring the car in and it’s either the key or the car and they’re going to charge me the diagnostic to my other key was working fine it has to be the key I guess what BMW does that make extra money someone please give me an answer on how to correct the problem without spending another $500

  2. Anonymous says:

    The dealer after market keys will fail not if but when

  3. Anonymous says:

    I have a similar issue. I got a mobile start put in 2 years ago and have on occasion had the car not recognize the key…after a few tries it usually would work. Recently it stopped recognizing the remote entirely. Neither my main or the spare will get any lights to light up. They both unlock, lock and open the trunk but nothing in the ignition recognizes them. Suggestions? Car is a 06 330xi E90

  4. Anonymous says:

    Having the exact same problem as you guys, have a 2005 E60 520d. Lost my 1 and only fob, ordered a new one through BMW (wakefield) Got it to the car, put it in the keyfob slot, a picture of a orange key come up with a line through it… Tried it again, nothing on dash, no sign of any response what so ever. Bmw have told me its either the key or the car…..
    But i left my car unlocked at the time of losing the key for about 5 days until i got the new key, now after reading a few forums some people say that the car is not shuting down into standby mode or what ever and may have drained the battery. The indicater is green on the battery, but got a battery charger (trickler) to see if it makes any difference. I know its not the car as my old one worked fine without any issues. Reading through the comments im wondering if this is a procudure bmw pull to rake in extra money. On purchase of the replacement key, was told it would code itself to the car using the chassis….

  5. Anonymous says:

    I’ve a problem with my BMW key is 320d 2005 auto
    My battery gone flat so I took apart the whole key change the battery on the weld it back
    Worked 5 6 time open and close and stop working again
    The battery is new .

  6. Anonymous says:

    I have a 2015 3 Series BMW that I lost my key pod to. I ordered another from the Dealership, this does not start my vehicle. I called back to the Dealership and was told to tow the vehicle in and the cost for diagnostic would be 145.00 plus145.00 to program the key pod. On top of just paying 374.00 for the key.

  7. Anonymous says:

    I can’t start my BMW 118i ,n it locks the door n the mobile key doesn’t work I can’t open or close the doors , PLS help I tried to start but it doesn’t show anything on the dashboard

  8. Anonymous says:

    Same here. Wondering how long does the battery last?

  9. Anonymous says:

    What was the resolution? I am having the same problem.

  10. Anonymous says:

    I have a bmw 328 xdrive my car is not working I replace a battery many of time but it show again replaced your battery

  11. Anonymous says:

    Where did you buy the key?

  12. Anonymous says:

    I tryed to program another key fob with my original key now it will not start my 2007 BMW 530i . I have power everywhere but will not do anything when I go to try and start it . Please help me .

  13. Anonymous says:

    My 06 330i will not do anything when the fob id in the slot. The park indicator light stays on all the time now