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Automatic locking feature
1 To deactivate 2 To activate ►  To disarm: press and hold button 1 for about five seconds until a tone sounds. ►  To arm: press and hold button 2 for about five seconds u ...

Unlocking the driver's door (mechanical key)
If the vehicle can no longer be unlocked with the SmartKey, use the mechanical key. If you use the mechanical key to unlock and open the driver's door, the anti-theft alarm system will be trigger ...

Information for customers in California
In California, you have the right to exchange a vehicle or receive a refund of the purchase or leasing price if Mercedes-Benz USA, LLC and/or an authorized workshop or maintenance facility cannot ...