odb reader
Can i use it to turn on my fog lights controled by the internal switch (turned off at factory)? This I would do!
These things just read diagnostic codes from the car computer (OBDII port). You can use them to turn off the 'check engine' light, unless the fault wasn't fixed; then the light will just come back on next time you run the engine.
You need something a little more BENZ specific to turn on and off car features.



