When you press the button on your key, look at it carefully to see what happens. (If you’ve already done this, keep reading.) So where do you begin to figure out the cause of your specific problem?Ī good first step is to change the keyless remote battery. The AAM is not receiving signal at all because of an antenna issue. The All Activity Module (AAM) is not recognizing the key signal.ģ. Here are some common reasons for this issue:Ģ. In other words, it will not allow you to use the fob as a keyless entry remote. Your problem is likely that the fob can start the car but will not allow you to unlock the vehicle’s doors or trunk. The panic button and/or trunk unlock features don’t work. Your keyless remote or key fob won’t unlock doors.Ĥ. Your Mercedes key fob has stopped working with no warning or explanation.ģ. Your Mercedes key fob doesn’t work after changing the battery.Ģ. The specific problems discussed in this article are:ġ. Specifically, this article addresses issues with unlocking the Mercedes Benz CLK, E C CLS, A160, C-Class C220, C230, C300, CLS, and ML models. This article will explore some steps you can take to solve the problem of a Mercedes Benz key fob not working to unlock doors or a trunk. Fortunately, there are several steps you can take to address this issue. It’s always annoying when the key fob for your car doesn’t work.
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