my 2007 c230 wont start randomly?! please help?!?!?!?
i have read a thread on practically exactly the same thing, but i the only thing that is different is that this guys car cranks, but mine doesnt crank...
im not sure if its the feul pump? or the cps?
here is the thread on the similar problem... let me know please
http://www.benzworld.org/forums/w203...-wtf-need.html
i mean the car war driven to work, then back home, then when tried to start... it just wouldnt start... this happened before, i just really want to get rid of the problem this time
this other thread, the link below has the description which is the same, the only difference is that my car doesnt crank.
i dont know if his didnt crank later on or not? but i cannot get a hold of him through messagin. please can someone help me out here?
if i dont sum up my problem... read the thread link below just to get a better idea... thank you!
https://mbworld.org/forums/c-class-w...here-look.html

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I believe the problem is in the Key.
If The car won't start, I take the key out and wipe my finger over the sensor at the end of the key and the ignition, Put the key back in, Turn it.... and Presto.
It's either that the key is dirty or maybe the battery is slowly going in the key itself.
Doesn't the chip inside the FOB need a source of power to transmit the signal?

Once the key is inserted in the EIS it is inductively powered to achieve handshake & authorise start.
I believe the problem is in the Key.
If The car won't start, I take the key out and wipe my finger over the sensor at the end of the key and the ignition, Put the key back in, Turn it.... and Presto.
It's either that the key is dirty or maybe the battery is slowly going in the key itself.
And OP I wonder if he figured out the problem too. I just replaced the fuse 52 with a 20 so we'll see if it continues to act up

Pray it's not an EIS.
I also just ordered the relay so I'll be able to determine if that's the culprit or not.


KEY #1

KEY #1 Reverse side

KEY #2

KEY #2 reverse side
See the second key on the coil, there's some separation? Well turns out it's not the problem, because I finally tried my second key and even today my key would sometime not start the car.
I REALLY hope it's not the EIS! But would the EIS still not work if it recognizes the key?? =(((
Last edited by niceguyftx; Feb 22, 2012 at 10:22 PM.
I just replaced the starter hoping my car would start normally each time but it still continues. It's actually gotten worse. Sometimes it'll take about 30 tries or so for the car to crank and turn on. I just ordered the CPS sensor though just as a last resort attempt at fixing this before sending the car off to a mechanic to diagnose.
if anyone has any suggestions on any other methods or fixes I could try, please help. thanks!



