Why does my Mercedes keep saying key not detected?
The most common reasons why a car won’t detect the key fob are: Keyfob Battery – The battery inside your key fob is dead or too weak. Therefore, it can not send a strong signal to the keyless entry system. Key batteries will need to be replaced.
What are the common problems with Mercedes key fobs?
Common Mercedes Key Fob Problems Go to top 1 Mercedes key fob not working after battery change 2 Mercedes remote doesn’t work anymore 3 Keyless remote doesn’t lock/unlock the car 4 Mercedes key fob won’t unlock doors 5 Panic button doesn’t work 6 Trunk unlock doesn’t work
Why is my key fob on my W204 not working?
Here’s a look at some common reasons why your w204’s key fob isn’t working. Some owners report an error message, such as “key not detected,” or limited range when the key batteries are dead or very low. Fortunately, changing the key battery is simple and can be accomplished by using the valet key that comes included with the fob.
Why does my car not recognize my key fob?
Reasons your car won’t detect the key fob If you try to use the push-button start, but the dashboard message appears that a key is not detected, it could be that the battery inside the remote is dead. the remote itself is broken or no longer programmed to your car.
How do I Sync my Mercedes fob to my car?
To synchronize a Mercedes-Benz key to your car all you need to do is insert the key into the ignition for a few seconds. This works in most cases but every now and then you may need to follow further instructions to synchronize your Mercedes key fob remote with your car.
Why is my key fob not working on my Mercedes?
If neither of your key fobs unlocks or starts the car, there’s a good chance that the issue is the car’s battery. Some owners report that their cars failed to start even after a jump start, but a later trip to the dealership indicated a dead car battery.
To synchronize a Mercedes-Benz key to your car all you need to do is insert the key into the ignition for a few seconds. This works in most cases but every now and then you may need to follow further instructions to synchronize your Mercedes key fob remote with your car.
Why does my car not recognize my FOB?
Reasons your car won’t detect the key fob 1 the battery inside the remote is dead. 2 the remote itself is broken or no longer programmed to your car. 3 the car battery is low. 4 the keyless operation system is faulty. More
Do you need to reprogram your key fobs?
For some cars, reprogramming key fobs may not be easy, and in that car, specialist hardware may be required. Typically, we would suggest that you call your authorized car dealer to take care of the situation, but this can be expensive.