Bought my c300 10 days ago and have had multiple issues:
- whenever im driving a red triangle error light appears on the dash for 1 second, beeps, then dissapears. This has happened twice now. I cant tell what the error light is because it appears for 1 second
- for some reason, whenever i unlock the car now, the LEDs never turn on, nor do the tail lights. Only the doors unlock. Same when i lock the car
-once when i was driving, my friend behind me told me one of my tail lights wasnt working. I parked the car for an hour, and when i started it again, it was fine
- i have my bass setting at 10, and treble at 0. The burmeister speaker on the passenger door rattles and shakes sometimes
All together, no major issues, but little problems that annoy me. Anyone else having these problems? Im mostly concerned about the red error light.

 

Sounds like an issue definitely worth a dealer visit. Hopefully software issue.

 

hmm regarding the red triangle (with car symbol within it)....it could be the one that warns you are too close to the vehicle in front of you. Prevention collision blabla something. It can be turned off in the settings.

I had the same "wtf" experience in my loaner A-class.




The red distance warning lamp lights up while the vehicle is in motion.
>
The distance to the vehicle in front is too small for the speed selected.
Increase the distance.

The red distance warning lamp lights up while the vehicle is in motion. A warning tone also sounds.
>
You are approaching a vehicle or a stationary obstacle in your line of travel at too high a speed.
Be prepared to brake immediately.
Pay careful attention to the traffic situation. You may have to brake or take evasive action.
Further information on PRE-SAFEŽ Brake more.
For further information about the distance warning function of COLLISION PREVENTION ASSIST PLUS, see more.

 

I think you should read the owners manual.