Technical Engine management light

[Gledsy1108]

I have just had my ducato 120 mulitjet 2007 serviced and since leaving the garage (could be coincidence) it keeps losing power whilst driving and the driver window goes down on its own. The engine management light has comes on and off.
I took it back to the garage and he had a quick look but couldn't see anything. My problem s he s now on holiday for a week.
As anyone else experienced this and know what it might be? I don't know if to keep an eye on it until he's back or to take it to another garage if it might make it worse.
Also does anyone know an approximate cost? I don't trust garages!
Thank you

 

[tommytopgun]

If the engine management light is coming on, best thing to do would be to get it on the diagnostics and get the code, even if the light is off, the code should be stored.

As for the window, it could be the switch.