rkao

In the two previous Mercedes I had, the climate control system included a "tunnel mode" - which was activated when the recirculation button on the center console was pressed and held, closing the moonroof and windows. And when exiting a tunnel, pressing and holding the recirculation returned the moonroof and windows to previous positions.

This is a pretty useful feature around here in metro NY when traveling in and out of Manhattan using tunnels like the Lincoln or Midtown.

This feature seems to be missing in the GL, is this correct?

bensonchuong

I have a GL450 2007 and I have that feature. Not sure about your 2010 though.

StevethePilot

Dude, another cool "feature" I didn't know about? Last one was what the "REST" button does. Why don't the salespeople know this crap? Ugh!

PS I need to check this out now!

Popo

I have a 2007 GL450 and holding the recirculate button does activate tunnel mode fine for me also.

Fourdiesel

I didn't know about that feature either! Thanks
If it doesn't work on your car, perhaps the dealer can 'activate' it using the M-B computer system. You'll have to find someone at the dealer who 1) knows what you are talking about 2) Is willing to spend the time figuring it out.

bensonchuong

Do you know about controling the windows with the keyfob?

StevethePilot

Now that one they showed me. But thanks!

43221B

Unless you have to hold the button for more than 5 or 6 seconds, my 09 doesn't have the feature either.

bensonchuong

Looks like it's not avaliable in the '09. I just went thru the manual. You can still close all the windows using the key fob though.

rkao

Yeah, it looks like MB removed this feature from the X164 class and it looks like '09 was when it happened.

If the feature is present, you'll only need to hold the button for about 3 seconds to activate the tunnel mode. Wonder if the feature remains on the other classes?

Yes, the ability to open/close the windows with the remote remains, which is great on warm days before putting the kids in.

Franman

I agree, but the range stinks on this feature. You have to be like 2 feet away from the car. My previous vehicle (Infiniti FX) you could be 20 or 30 feet away, so when I would be walking to the car in the parking lot I could get the windows rolled down and give it plenty of time to cool while I was talking towards it.

lkchris

In the 2007 manual, it's called "Air recirculation mode with convenience closing and opening feature."

Looking in manual for "tunnel mode" won't find anything.

The whole statment isn't in index either--just "air recirculation mode."

2 second push.

StevethePilot

Plus you have to be pointing right at the door handle, because it's through the IR and not the radio frequencies. Not the most useful "feature" on the car.

STP

Franman

that too - especially since you can just hold down the button on the door handle to achieve the same result (at least for closing everything...I think it works for opening as well).

StevethePilot

Only with keyless entry/keyless go. No button like that on my door handle.