MiamiAMG

I get this message from time to time. I always have my key in my right pocket & sometimes when i get in my car & press the start button i get this message on the display. I also have problems unlocking the car sometimes. It seems that if i have the key out, it all works perfectly. I can't believe that having the key in my pocket causes this issue. Is this a sensor issue or is clothing that much of a barrier?

Anyone else experience this?

UK-C200

Is it in the same pocket as your mobile phone?

Blown63

I also always leave mine in my right pocket and sometimes with my cell phone and have never had any problem. Maybe try changing battery? I had to change mine within the first month for some reason but all good ever since!

MiamiAMG

Nope, all alone in my pocket. Very strange.





Im going to try that today when i get home.

I am Jeff

I get that message whenever my key is in the same pocket as my company ID card. I think it's the magnetic strip in my card. I've also gotten that message with my phone in the same pocket as well.

khmergod

Most likely interference.

ZephyrAMG

Do you have a metal plate in your nut sack? J/K Usually a new battery needed in key believe it or not. The keys are made a long time before the cars and the batteries die out, but should last a long time.

AdrianL

It's likely a dead battery in the key. I've had this problem in my cayenne and my merc, don't leave the batter out of the key too long, or all **** breaks loose... well it did in my porsche anyways.

Long short, try and replace the battery.

chief63

+1 Had similar issues before I changed the battery. BTW its a 30 second thing, don't go to the dealer. For 8$ incl shipping I got 10 energizer batteries, good for a couple of years.

ZephyrAMG

Show or describe how you opened the key if you can.

MiamiAMG

Yeah, i'd like to see that also.

Yuille36

It could be that the batteries are getting weak. I would definitely start by changing the batteries. Troubleshoot the obvious first.

Blown63

I saw this yesterday hope it helps!

https://mbworld.org/forums/audio-ele...-pictures.html

ZephyrAMG

awesome!

MiamiAMG

I had originally assumed the batteries as the cause, but the thing is that the remote works fine when i open/close the locks with the buttons on the key-even from far. It's solely the keyless-go features that sometimes have issues.

That being said, i will still change the batteries today. Thanks guys.

MiamiAMG

Cool. Thanks!

jvanbrecht

There are two separate radios involved in the keyless systems. A long range transmitter for when you hit buttons, and a short range transmitter for when the vehicle is in range of the sensors on the car. When you hit the button, your forcing a reaction and transmitting the signal, when your using keyless, it (and the car) transmit a small amount of data every few seconds, a low battery will cause the keyfob to stop transmitting, or transmit with longer intervals in between, resulting in your car not recognizing the key.

It works that way with the Toyota and infiniti ones (I had a Toyota that had it in the car I traded in for my C63, and my wife currently has it in her FX35), I am guessing it works the same way in most cars that use keyless systems.

derspi

Thanks for sharing that link! Great info.

I get the "key not detected' message from time to time as well and am pretty certain a battery change will help.

MiamiAMG

Ah, thanks for that info, it was very helpful. I'm going to try that today & hope it fixes the problem.

Juicejuice78

I have two keys and one does is not detected by vehicle quite often. I can lock n unlock by pressing the buttons without issues.
I have changed the batteries with new and still the same problem.
It used to happen not as frequent but now it almost never get detected.
Please help

Valvestud

You can test battery by performing test as outlined in your owners manual:


1. Press lock or unlock button on fob.


2. Battery check lamp on fob will light briefly.


3. If light does not come on, replace battery.


Regards,


Joe

Television

The only way to know is to put the car on STAR and go to Keys, you place both keys in the car and then program, it takes about 5 mins, that way you will know that both key are programmed.

roadtalontsi

where do you keep your wallet? Is it an rfi blocker wallet to keep someone from stealing your credit card info - this will prevent it from working properly. There is also a static electricity problem which temporarily disabled the key until it is grounded/buttons manually operated. Getting a leather key pouch cover can help with that. The only other possibility other than battery is going to be your key is taking a crap. There is no programming for keyless go keys. The older models only allowed 2 keytracks of the 8 to be enabled for keyless go but it isn't that way anymore.

amx1397

Just incase you didn't find the problem maybe you would want to call J S Benz ask for Jr. they repair, race, show and love anything to do with mercedes.
J S Benz 7375 sw 45 street miami 33156 305 269 8999
look them up ,, jim

AMG Boost

Happens to me also from time to time. I havent replaced the battery yet but I should. Dont want your key to die when you are out somewhere.