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Mercedes-Benz GL450 Questions

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I USE TO BE AN ASE CERTIFIED MECHANIC AND AM LOOKING FOR INFO ON HOW TO CHANGE TRANS FLUID ON 2011GL450.THANKS.

JOHN S
Those the size of tire will cause any problem in my car
This loud grinding noise doesn't start until I reach 25mph, and turns off when I'm making right turns, driver side front,Mercedes Benz gl450 2011
I use premium gasoline all the time, there is no alert light , and the engine knocks mainly if I start slow going uphill.
there is 3 light in the front the smallest one on the left side won't turn off
In reading your site, I've seen multiple similar complaints about this type of transmission failure. Why hasn't MB done a recall?
I keep getting a notification about the ESP that it won't function properly because of the abs
I trailered my boat with led lights 60 miles. After parking truck with trailer attached, remote would not lock doors. After returning 8 hours later to start truck, the battery was completely dead, which is remote did not work as there was no power in truck at all. First time this has happened. I jump started car after 5 minutes of charging and drove home 60 miles on highway. I put battery on game 10 amp charger and it registered 50% full. After 1 hour it was 100% full which is impossible. Charging needle was bouncing around from 50 to 100%. Now car runs fine and never got a warning code. Is it a bad battery or a fluke, or did trailer drain battery?
With inside light
while i was in motion,i notice that the warning sign just came up in my dutch broad
front blinkers do not work but the bulbs are not blown and the fuse is not blown. Rear blinkers are working.
I had opened my sunroof & now I can't get it opened. Water is dropping in but not much water.
oil change was done locally by other than dealer
On SUV a upper arrow saying malfunction gl450 magic 2008
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