What are some of the 2010 mercedes glk350 transmission problems?

The 2010 Mercedes GLK350 doesn't have any transmission problems that are specific to it, so the issues You're going to encounter are the run of the mill sticky transmission or rough gear shifting. Luckily, addressing these issues is usually really as simple as checking Your fluid level. If the tranny fluid's too low, or has become d***y (as it will over time) with contaminants, it's going to perform sub-optimally and eventually fail. Topping it off or replacing it at the manufacturer sanctioned maintenance intervals will resolve Your transmission issues before they occur. You can use any synthetic ATF fluid in Your GLK350; O'Reilly's sells a generic version for around $7, but for another buck You can get Valvoline's version there.