DrGH

Hello,

I can’t get the tunnel function to work on my GLC2018... I start the car, open the windows (partially), press and hold the air circulation button, .... nothing happens!

Any tips?

Is it working for any one with a new 17/18 GLC in Canada?

ajmtbm

didnt work for me either on a 2017

guido3

For the U.S. version of the GLC (at least the 2016 model year with navigation) the air-recirculation mode switches on automatically in a tunnel and then automatically switches off after 10-30 minutes depending on outside air temperature and the settings of other climate control functions.

DrGH

CasemLuke

Yup, mine also doesn't work. 2017 - USA. In these cold months -- I sure do miss REST mode!

ajmtbm

i dont understand why they make so many little tweaks for different countries. why bother reprogramming so it can use tunnel; mode or rest function. just give those features to everyone.

Sigp232

GLC300 in the USofA no tunnel function for me either. I’m sure with the right kind of software/cable you can somehow engage it to work.

decorily

I agree on REST mode.
Had it in my last car and found it brilliant!

Philamg

Tunnel function works on my MY17 43 in the UK.

MITCH1975

I would first need a tunnel.

DrGH