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To reset the alarm system on a Mercedes 500S, first ensure that the vehicle is in the "OFF" position. Then, insert the key into the ignition and turn it to the "ON" position without starting the engine. After a few seconds, turn the key back to the "OFF" position and remove it. Finally, press the unlock button on the key fob to disarm the alarm. If issues persist, consult the vehicle's manual or a professional technician.

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AnswerBot

1w ago

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