You don't say what model of MB it is and this makes a difference.
Door openers often have rolling codes these days and that makes a
Good place to start, is the car's owners manual - it has instructions. If it
is an older car, and you have rolling codes, you may have to look at the
door opener manual or contact the manufacturer.
Our Mercedes loaner has the universal transmitter on the
mirror. However, I don't know how to reset it to our doors.
I understand how to reset our receiver on the openers, but
don't know how to clone the transmitter to the mirror.
After pressing the two outside buttons for 30 seconds to
clear all old codes, what do I then do next?
It's a loaner car... leave it alone. Unless you plan on keeping the car for
a long time. The process is simple... first do a reset... push and hold
first and third button for 15 seconds. Then you have to program the first
button to your garage door remote... meaning you need the actual original
transmitter... hold 4 inches away from buttons... press and hold your
original remote... then hold the button you want to program until it flashes
real fast... then finally you need to press the learning button on garage
door opener... and press the buton in car a couple of times.
Do this with ignition ON.
Yeah, if it's a loaner for his Mercedes-Benz that's in the shop, he might
have it a while ;-)
It's more like 20 seconds and you will know it has reset and erased any
learned codes because the amber light will flash.
If you have a rolling code garage door opener, you will then need to
activate the programming function on the opener itself. This varies by
model, but is often a button on the backside of the motor housing. For
example, on my Sears model, it;s an orange button that you press once and
then the light next to it will blink. After that, you press the Homelink
button you just programmed on the car, and all is done.
Since this is a loaner, you should probably erase the Homelink memory when
you return it but repeating the first step of holding the first and third
buttons down until the light blinks. By the way, the customer services reps
at 1-800-FOR-MERC are usually pretty good at helping you through this. They
ask a few questions about the make and model of your opener and then they
can tell you exactly what to do.
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