See also:

2011 Mercedes-Benz R-Class Review by Kristin Varela
What's a parent to do when they need to transport more than two or three children (or adults for that matter), but they're not willing to make the leap to a minivan and don't love the trucky feel ...

Important notes on the use of KEYLESSGO
The KEYLESS-GO key can be used like a conventional key. You can combine KEYLESS-GO functions with those of a conventional key, e.g. unlock with KEYLESS-GO and lock with the button. Always ...

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 tri ...