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It took us TWICE to the selling MB dealership to get the AC issue resolved.
The service advisor refused to look at the print out I had for the AC problem from the MB HQ. I had to email it to the salesman who sold the GLB to us to make sure the service department checked it out.
All ok now.
I will post what was replaced when I get a chance.
Thanks for all who helped.
Originally Posted by rohanpatel14
If the issues is listed in the NHTSA then don’t dealership take care of it when go for service?
It was hot today, 43C outside.
Parked my car on street for 1 hour.
When I came back and started the car, it only blew warm air, I was totally wet in several minutes.
I tried turn on/off AC, stop/start engine, still not working. Drove to nearby MB dealer, their service department does not work on weekend. Evetually, I found if I swtich the AC to manual mode, set fan speed low. Somehow, it started to blow cold air again. When I changed it back to auto, it blew hot air again after a while.
Parked the car under sun again to have lunch, when coming back, same thing, no cold air. Turned to manual and low fan speed, drove faster, AC started to work.
I think some overheating protection or some fluid pressure issue is there. Will take it to dealer on Monday to see what will they say.
We had the same problem back in the summer (USA). It took two trips to the MB dealership to get it fixed. There is at least one TSB from MB addressing this AC problem.
Please see my post #29 above.
Also another poster #24 above and attached.
Originally Posted by tictac
It was hot today, 43C outside.
Parked my car on street for 1 hour.
When I came back and started the car, it only blew warm air, I was totally wet in several minutes.
I tried turn on/off AC, stop/start engine, still not working. Drove to nearby MB dealer, their service department does not work on weekend. Evetually, I found if I swtich the AC to manual mode, set fan speed low. Somehow, it started to blow cold air again. When I changed it back to auto, it blew hot air again after a while.
Parked the car under sun again to have lunch, when coming back, same thing, no cold air. Turned to manual and low fan speed, drove faster, AC started to work.
I think some overheating protection or some fluid pressure issue is there. Will take it to dealer on Monday to see what will they say.
It's not sorted yet, I've been to two different dealers(Tucson, Austin) without any progress.
The AC was not working yesterday. Exact same symptoms you described. Now I've got the correct ammo for my next dealer visit.
Also, I made videos of the AC vent temps and refrigerant lines under the hood.
I won't be picking up the car again without a resolution.
As I recall, for us it was one of the problems was the AC system was OVER PRESSURED/CHARGED.
And one of the pressure sensor was bad.
good luck.
Originally Posted by dirtheadtom
It's not sorted yet, I've been to two different dealers(Tucson, Austin) without any progress.
The AC was not working yesterday. Exact same symptoms you described. Now I've got the correct ammo for my next dealer visit.
Also, I made videos of the AC vent temps and refrigerant lines under the hood.
I won't be picking up the car again without a resolution.
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