Have you had any success getting the four windows to open automatically using the unlock button on the key fob (from outside the car)? I like to have the windows open to release the heat from the interior before I get in.

I've only been able to get it to work when I stand right next to the driver's door. And sometimes I have to push the unlock button several times before it opens all the windows.

Just wondering...

Push and hold the open/close button works for me.

Thanks for the reply. I've just noticed that it is really finicky and I sometimes have to be standing right next to the car and I have to push the open/close button several times...if not more.

If this is anything like the w204 then there is an infrared transmittor at the end of your keyfob that has to point at the receiver on the driver'd door handle. Do this while you hold down the unlock button (or lock to put the windows up) and see if that helps.

Think of it like turning the volume up or down on your TV using your remote. It won't work unless you point at the right part of the TV.

Give that a try and let us know what happens.

On my 2010 W204 the moon roof would also open and close. I have yet to get it to work on the W205. I can't find that this is even an option in the manual.

There is mention of this convenience feature in my US owner's manual on page 98. I think you have to have keyless entry to have this feature. It's nice when it works.

I just found it on pages 98-99. I have keyless entry and did exactly what's mentioned. Still can't get it to work

Just tried it on my UK 205, car unlocks OK but windows stay firmly shut.

Mine works. Also when I press and hold lock the windows go up as well.

Works fine on my UK C200

I just played with it a little more and you HAVE to have your key fob pointed (small end with lock button) directly at the door handle. Worked perfectly doing that.

My W205 doesn't have the same black IR receiver that my W204 had. I tested and I can roll them down with the remote while its inside my jeans pocket, so no real chance IR is involved. I did notice I can only do it when I'm within about 6 feet of the car, so I suspect it's based on proximity as well as the RF signal.

Tried again while standing close to the car and all windows and roof open when holding the open button down and all close when holding the lock button.

Seems you need to be reasonably close to the car.

We can open our boot with the key as well don't need to be too close either. If you want to close the boot with the key you got to be within 6ft though. Weird.

Tried again couple days ago and it worked perfectly fine. You have to hold the key no more than a couple feet away from the sensor on the handle.

Where is IR receiver on w205? Keys have ir transmitter (easy to check with phone camera), but I can't find it on the car.

Mine works but, as others have mentioned, you have to be very close to the car.

My guess re the distance thing is they do it to prevent accidental operation.

My BMW for example will open its Windows from a huge distance away. Great you might say... But I've come back to the car on several occasions where the windows are wide open because I've been sat nearby and the key was pressed in my pocket by accident.

I have the same problem on my W205 model. Did you ever get it sorted.

I would like to get it to work with just all windows. I don't need or want the panorama glass roof on my 2015 E400 coupe to open every time I do this.

My GLA250 frequently had the lift gate open because of pocket activation of the key fob. So far no similar issues with the C300.

you shouldn't have to be next to the drivers door, but you need to be close to the car. even if the remote is unlocking the door the windows wont go down for security reasons? anyway kinds defeats the purpose of venting the car if you have to wait until you are almost in it

Just bought first MB . 2016 c220. No convenience window opening. Looked in the user manual. It is part of the Keyless Go option. My key has it sender ok, but no receiver on the driver door handle, little rectangle next to keyhole. This I think is my problem, MB made convenience/ summer opening part of a optional package.

+1 Anyone figure out how to change this? I'm usually already at my car by the time the sunshade opens, then the sunroof, then the windows. Seem like have the windows open first would be more logical.

I've just come across this €62/$67 device, overplugs into the control wiring in the drivers door and gives remote key convenience or summer opening of Windows. I don't have it on mine, its part of keyless go package, but a lot of W205 C class in UK and Ireland have a normal key turn to start, so would be affected. I'll order one and try it.

https://www.aliexpress.com/item/32799897843.html