tor888

Aloha...one last really odd sound. When running my GLK 250 in 80 degree sunny weather in stop and go conditions there is a noticeable gurgling noise behind the dash. It's been hard to pinpoint the sound but you hear it more in your seats then when the hood is popped. The word to describe is Gurgling or burbling...lol

Ok...I'm up on my allotment for posts....thanks all for responses....

Tor

Mmr1

I'm just guessing, the AC has been on? It could be water building up in the ac unit. There is a drain hose for condensate , condensation that occurs on the ac coil and drains out through a small hose near the dash area to under the car . A clog could be letting water build inside the ac unit, then mold and musty smell happens. Look to see if water is dripping under the dash area while ac runs, if no water it's really clogged. Get it looked at, mold is really hard to get rid of once it starts.

tor888

You are correct...AC running for sure for a good amount of time. The Odd thing is this has been happing around 15k to 20k. I have it scheduled to get looked at but like to understand before going in. So thanks so much for you feedback...

Tor

Mmr1

Read your Maintenance schedule, checking this tube is under normal included maintenance, if you smell any musty smell, it's mold and they owe you a dissenfect. And a new interior charcoal embedded filter, I wouldn't wait, mold grows

dbr9tifosi

My car makes the same gurgling sound when the A/C is on. Is this normal and where can I find this drain hose/water outlet. I'd like to unclog it myself if I could.

Mmr1

I'm only guessing, water should be dripping from the firewall area, from a plastic hose, it cleaned by running a wire up it or compressed air. If you have some dip , water on the ground when the ac runs, that will help you locate it. I think it's a common issue. Can you post back the procedure to fix it? It is supposed to be checked under Maintenance regularly. But compressed air could be the wrong way to clear it.