So basically for about a month or so the little light on the lower right hand side of the dash board display turns on the minute I put the key in the ignition and does not turn off even when I am driving. I ignored it and kept on driving and this morning I went to turn the car on and the battery was dead. I don't know if this had anything to do with that but if it did...can someone tell me a solution?

Thank you kindly,

Donalejov

PS
By the way...nothing was left on, ie. Radio, AC, Lights..etc.

 

what model and year car?

 

When you stick the Key in your Ignition Switch and rotate it a little towards start all of you Dash Board Warning Lights are supposet to come on (not just on Mercedes alone); and that is normal.

This is how you know if you have a burnt out bulb or not on you Warning Lights.

If after the Car/Engine is running a warning light comes on you have a problem.

 

The car is a 1983 300 Turbo Diesel....the light that is all the way to the right has remained on, after turning the car on, for about a month or so.