Mercedes-Benz C300 4MATIC Questions

Get answers to your auto repair and car questions. Ask a mechanic for help and get back on the road.

Find questions for your car.
Went for NYS Inspection for my 2010 C300 4Matic and was told my OBD was not communicating with the inspection computer. They said my OBD was not powering on...beyond that they knew of the car runs perfect.....
I had my well maintained C300 4Matic with 197000 miles (well maintained).. sitting in the garage because I bought a new car and was planning to sell it. After a month- I turn it on and the CEL light is on. Code: p0300 It was in there with minimal gas and my roommate was turning my car on every few days to move it on the drive way and back so she could workout. She told me she never saw a light until I mentioned it. Could this be because the gas turned bad and is very low? I literally just got a B service done, oil change, and spark plugs/new tires right before I left it in the garage. Trying to sell this but need to figure this out first. Any thoughts?
Changed the battery, car cranks now and radio works...but now power to the a/c or heater
My command screen work fine yesterday and today the screen is totally blank - I have all functions but no screen. Tried shuttuing off and on but that did not work.
My Mercedes c300 4matic has defective rotors. I have 45k miles and every service was done through the dealer. The front end shutters when breaking at high speeds (over 50mph). The brake pads are hardly worn. There was one other time I heard about this happening and it was with a ford, but they said it was defective since the brake pads were not worn.
Got in the car. The steering wheel did drop down to the level of tilt I had it set at. Actuating the little level didn't work. In and out for column works. The tilt does not.
Service tells me this is a pending recall with no answer and the light cannot be shut off? Nor can they tell me what it means??
The ac smelled like gym socks.. Mercedes indicated the evaporated needed a cleaning. Not covered by warranty Has anyone experienced this?
Cant tell if it is the tire or a bearing....a little noisy at lower speeds
the car lights will also come on even when the car is turned off and the lights are turned off
The singer name, album name, and song name will display on the screen for about 30 seconds and will not stay on afterward.
Just need to know if my timing chain needs to be changed
At startup the display always shows the miles and total mileage used which is fine but I would manually change it to mph settings. I'm used to that settings. My Porsche display was changed to that setting and I don't have to change it every time I start my car. With the Mercedes, I have to change it every morning. Is there a way to change it and keep it at that setting?
It's not the tires I assume it's something with the belt or pullies
So what steps shoot i trouble shoot
Get an estimate and never overpay again
RepairPal guarantees your repair will be done right.