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To program a C240 key, first, insert the key into the ignition and turn it to the "On" position without starting the engine. Then, within 10 seconds, press the "Lock" button on the remote control. Finally, turn the key back to the "Off" position and remove it. You should repeat this process for any additional keys you wish to program.

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1mo ago

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To reset the key fob for a Mercedes-Benz C240, first, insert the key into the ignition and turn it to the "On" position without starting the engine. Then, press and hold the "Unlock" button on the key fob for about 10 seconds. After this, release the button and turn the key back to the "Off" position. Finally, test the key fob to ensure it is functioning properly.


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Yes, you may need to reset the key for a Mercedes C240 if it is not functioning correctly, such as when the battery is replaced or if the key is not recognized by the vehicle. This usually involves reprogramming the key with the car's onboard computer. It's recommended to consult the vehicle's manual or a professional technician for the specific steps required for your model.


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The price of a Mercedes-Benz C240 key can vary significantly based on factors such as location, dealership pricing, and whether the key is a standard or smart key. Typically, you can expect to pay between $150 to $400 for a replacement key, including programming. It's best to contact a local authorized dealership or a certified locksmith for an accurate quote.


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