Key fob not detected: mobile locksmith checks in Burbank
A “key not detected” message does not identify a single failed part. The problem can be a weak fob battery, damaged fob, interference or a vehicle-side detection or authorization fault.
Separate the fob from the vehicle-side fault
Tell us whether the remote buttons work, whether another registered fob starts the car, and whether the warning is constant or intermittent. Those details help distinguish a problem affecting one fob from a condition affecting every key.
We assess the key and supported security-system information before recommending programming. A previously working fob does not automatically need registration again just because its battery was changed.
Useful clues to record
- Remote buttons operate but the vehicle does not detect the fob inside.
- One fob works normally while another produces a warning.
- Neither fob is recognized after water exposure, electrical trouble or previous repair work.
A focused detection assessment
Describe the warning
Send the exact dashboard wording, VIN and results with any second fob.
Check key response
At the vehicle we inspect the fob, battery condition and relevant supported diagnostic information.
Confirm the next action
We explain whether key repair, replacement, registration or referral is indicated before additional work.
Detection faults are not always key faults
A damaged vehicle antenna or electrical problem may need an automotive electrical specialist or dealer. We provide locksmith diagnosis and supported key service, not a guarantee to repair every start-system fault.
Use the owner’s manual for any manufacturer-provided backup starting position. Do not assume a backup procedure or battery type is the same across brands.
Frequently asked questions
Does replacing the fob battery erase programming?
For many fobs, ordinary battery replacement does not erase registration. If the warning continues, the battery fit, fob and vehicle response should be checked.
Can a working remote still fail to start the car?
Yes. Door-button operation and start authorization can rely on different parts of the system.
Should I buy a new fob before calling?
Contact us first. A new fob may not correct a vehicle-side fault, and the replacement must match the vehicle.
Fob troubleshooting at your location
We arrange locksmith checks in Burbank and North Hollywood, with nearby Glendale and Sun Valley coverage subject to availability. Keep all available fobs with the vehicle for comparison.
A current registration or title and matching government-issued photo identification must be verified before automotive key, lock, or immobilizer service is performed.
Discuss a key-not-detected warning
Call
Describe the warning and whether any other key works.
Text
Send a dashboard photo, fob photo, VIN and vehicle location.