How to Start a BMW with Dead Key Fob Battery
Is your BMW key fob not working, and you can’t start the car? This guide provides instructions on manually starting a BMW with a dead key fob.
If the batteries in your BMW remote have died, you will not be able to start the car or unlock the doors using the keyless feature.
Symptoms
- You can’t start BMW with key
- BMW key battery dead can’t start the car
- The Comfort Access key does not work
How to Manually Start BMW
- Remove the emergency key blade from the key fob.
Unlock the driver’s door with the metal blade. (Alarm may go off.)
Place the key into the ignition slot.
If 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.
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.
Try the procedure one more time, ensuring there is no more than a two-second delay between steps. Also, try the same procedure with a spare key.
Tips
- 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.
Follow the instructions in this guide to learn how to start your BMW manually. 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 on 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.
