Can anyone tell me how to change the light bulb in the right side mirror of 2003 ML350. Bulb is for turn signal. Any help would be greatly appreciated, thanks in advance.

 

must replace the whole LED bulb assembly. LED are not replaceable.

 

can i do it by my self, and how to do it?

 

It would be most unusual for the LED's to fail, unless something hit the mirror, I would recommend checking fuses before assuming the LED's are at fault.

You can prise off the interior speaker panel, where the cable enters the mirror, and maybe check for voltage there, or check the earth return.

I hope that makes sense.