I have a 2004 c320 and it sometimes it does not start,I have checked the battery and dealer has checked the care for shorts, they did not find anything wrong, but it always works when at the dealer.it cranks ones or twice and goes dead and nothing happens after that,I have to turn the ignition on and off a few times until it works.
I had the same problem with mine. Disconnect the power seat moduale underneath the seats. Recharge the battery and shouldn't happen again. Providing the battery hasn't worn down past the charging point. Worst case you will have to get a new battery. If you google C320 battery drains you will see hundreds of other peoples posts.
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The dealer cannot fix the car?!?!?!?!? What are they there for?
You have an intermittent situation. Thing to do is next time car does not start have it towed to dealer at their expense in that condition so they can hopefully address issue. Your dealer, like mine, is a POS.
Your leak probably comes from the windscreen and drips down onto the floorboard. Light problem:- Remove the light globes and clean the connections on the globe and on the fitting. You may have to bend the connections in the fitting to get better contact. Starting:- The most probably cause is the ignition switch itself. To prove this connect a wire directly to the starter solenoid. Next time the car refuses to crank apply battery power directly to the wire. Be careful: if the car is in gear and you start it while standing outside it will go off by itself and could even run you over. LPG
Sounds to me that your battery has shorted out and will not take a charge.Disconnect the battery and try to charge it, then check to see if it has taken power with a volt meter. A shorted battery will take all the power from the alternator and run it to ground leaving no power to run the car. Also check the alternator output with a volt meter after you have checked the battery as a shorted battery can burn out the alternator.
Absolutely. Could also be that the smart key has a dead battery or has been compromised by moisture, etc.
Can you still lock & unlock the car with the smart key? If so, the battery is not dead, and you should look next at the ignition itself. Is there any response when you put the key in? Can you turn it? Are there signs that your battery is drained (dim/no lights work, etc)? If you are getting no response when you put the key in and you can turn it, and it still works to unlock your car and you can verify that you have battery power, start by checking your fuses. The ignition and starter fuses would be the first to check.
Start by checking the battery connections. If they seem okay then, even though it may be pretty new, I would take the battery to the dealer and have them check it for an internal short in the battery. I had this happen 2 weeks after picking up a new car.