Keyless start intermittent fail
Thread Starter
Junior Member
Joined: Jul 2017
Posts: 18
Likes: 2
From: Omaha NE
Mercedes 2014 e350 4matic 2014 GLK 2011 SLK
Keyless start intermittent fail
Probably once a week, first thing in the morning, when attempting to start the e350, I have the key fob in my pocket and when i push the start button, the display reads "key not available". So I pull the start button out , instert the fob and it starts. After that no more problem using the fob in remote. New battery in fob. Any ideas??
Senior Member
Joined: Apr 2016
Posts: 453
Likes: 149
From: Phoenix, AZ
2016 E350 Sport 2WD
So you push the start button, a signal is sent by the car to see if the key fob is near, the fob responds, the car receives the message sent by the FOB, and starts the car. Any part of that transaction could fail. I have no idea how to determine which part of the transaction fails.
Last edited by Sunnyslope48; Mar 2, 2019 at 09:44 PM.
Thread Starter
Junior Member
Joined: Jul 2017
Posts: 18
Likes: 2
From: Omaha NE
Mercedes 2014 e350 4matic 2014 GLK 2011 SLK
SOLUTION to "key fob not found"
OK, so occasionally the dash says "key fob not found". The reason? I carry my fob in my pocket all day and sometimes it one of its buttons get pressed then the car can't "find" the fob. I found that simply pulling the fob out of my pocket and pressing the "unlock" button will allow the key to be recognized. 
