C300 Won't Drive Please HELP
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Joined: Mar 2016
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2011 C300 4Matic
C300 Won't Drive Please HELP
So I live in upstate NY. It finally snowed up here last night, its been months since we got snow. It was also really windy as it snowed. So I woke up this morning to go start my car. When I started it all my warning lights came on (Tire Pressure, Check Engine, ABS, SRS, ESP was turned off) and I can't put the car into gear. I left the car running for about 30 seconds and then all of a sudden my radiator fan decides to come on. and it won't turn off. I don't know what to do. Anybody have this issue before? Thanks! (2011 Mercedes Benz C300 4Matic Sport)
**FIX**
I have resolved the issue. If anybody is having trouble try taking off the - and + from your battery and leave it there for 10 minutes then put them back on. Resets the system. Should work if not then good luck!
**FIX**
I have resolved the issue. If anybody is having trouble try taking off the - and + from your battery and leave it there for 10 minutes then put them back on. Resets the system. Should work if not then good luck!
Last edited by Opinix; Apr 3, 2016 at 06:29 PM.
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Joined: Aug 2014
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From: Columbus, OH
2009 C300 4Matic Luxury
I had something similar happened to me. First the tail lights came on for no apparent reason. The only way to turn them off was to start the engine and turn the engine off. Later in the day, and first time it was started for the day, I drove less than a half mile, 5 minutes after being in the cold garage the radiator fan is blowing at full speed. There was no indication on the dash there was anything wrong. So I started the engine and turned off and the fan stopped. The next morning the tail lights were on again and again I started the car and turned it off and again the lights went out. Later I wanted to go somewhere and I went to get in and I knew something was very wrong as the dash was completely dark. Went to start it and nothing. I jumped started it and let in run for a few minutes, put it in gear and with the engine running, I could move the lever, but it would not engage. Then I did what you did, about taking the lead off the battery for over 30 minutes and hooked backed up. It would start, but not move. Fortunately I got a flat back driver who knew about the safety shifter interlock switch under the boot and was able to start it and drive it out of the garage onto the flat back to the dealer. They diagnosed it as a bad alternator. Weird isn't it. Everything has been fine now for over a month.
Thread Starter
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2011 C300 4Matic
thanks for letting me know. thats very wierd that it would be an alternator. ive took mine to a Mercedes specialist. he is working on it now. a day after i fixed it by reseting the battery my problem came back. i put ut into drive manually by opening the shifter knob. drove it to the specialist with all my warning lights on. speedometer gauge wasnt working, headlights, blinkers, my right headlight wasnt working. i think my issue is that my car was exposed to water. friend of mine had a similiar issue to his w211 E500. he ended up changing his ECU because water got into his rear fusebox. lets hope thay specialist fixes my car!!! 
Thread Starter
Newbie
Joined: Mar 2016
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2011 C300 4Matic
So the Mercedes Specialist got back to me tonight. He has resolved the issue. Apparently W204's have around 30 modules that control the whole car. All of my 30 modules were receiving low voltage. I could barely hear him on the phone. He said something about the rear fusebox. I didnt get a lot of information because it was late but Ill find out more tomorrow morning when I pick up my car!
