**Description of the issue at hand**

I just took my car to a mechanic (non-Mercedes specialist) that *replaced both front wheel bearings*. Other than that, no other repair was made. Other than the bearings making noise, the car was driving fine. Brakes were good. 

The repair took a few hours and I got back the vehicle which is driving OK from what I can tell. Only thing is that now there is a warning about tire pressure not being able to be measured, ABS + ESP malfunction and such.

The mechanic said that I should probably take it to a Mercedes dealer for diagnosis (he is not equipped for that). But there is no Mercedes car dealer/garage where I live. 

**The questions**

This is my first Mercedes and have little experience with the brand. Is this a normal behaviour? Should this warning appear systematically after a bearing repair is operated? Should I be concerned even though the car seems to drive fine?

If I manage to "reset" the fault codes associated with the ABS+ESP+Tire Pressure, will that be enough? (I plan on buying a Launch Creader VII+ or an iCarsoft MB II). Or should I really consider taking it to a far away Mercedes dealer and pay ridiculous amounts of money just for a diagnosis?