SmartKeys
Encyclopedia
SmartKeys was introduced by Mercedes-Benz
in 1998. It is a plastic key to be used in place of the traditional metal key. Electronics that control locking systems and the ignitions made it possible to replace the traditional key with a sophisticated computerized "Key". It is considered a step up from remote keyless entry
. The SmartKey adopts the remote control buttons from keyless entry into the SmartKey fob. Once inside a Mercedes-Benz vehicle, the SmartKey fob unlike keyless entry fobs, is placed in the ignition slot where a starter computer verifies the rolling code. Verified in milliseconds it can then be turned as traditional key to start the engine. The device was designed with cooperation of Siemens
Automotive and Huff
exclusively for Mercedes-Benz but many luxury manufacturers have implemented similar technology based on the same idea.
The SmartKey's electronics are embedded in a hollow, triangular piece of plastic, wide at the top, narrow at the bottom, squared-off at the tip with a half-inch-long insert piece. The side of the SmartKey also hides a traditional Mercedes Huff key that can be pulled out from a release at top. The metal key is used for valet purposes such as locking the glovebox
and/or trunk before the SmartKey is turned over to a parking attendant. Once locked manually, the trunk cannot be opened with the SmartKey or interior buttons. The key fob utilizes a radio-frequency transponder to communicate with the door locks, but it uses infrared to communicate with the engine immobilizer system. Original SmartKeys had a limited frequency and could have only been used in line-of-sight for safety purposes. The driver can also point the smart key at the front driver side door while pushing and holding the unlock button on the SmartKey and the windows and the sunroof will open in order to ventilate the cabin. Similarly, if the same procedure is completed while holding the lock button, the windows and sunroof will close. In cars equipped with the Active Ventilated Seats, the summer opening feature will activate the seat ventilation in addition to opening the windows and sunroof.
In addition to the SmartKey, Mercedes-Benz integrates as an option Keyless Go
; this feature allows the driver to keep the SmartKey in their pocket, yet giving them the ability to open the doors, trunk as well as starting the car without ever removing it from their pocket. The Keyless Go SmartKey was originally offered only in SmartCard format although the SmartKey Card has been discontinued in favor of the chrome SmartKey.
Mercedes-Benz
Mercedes-Benz is a German manufacturer of automobiles, buses, coaches, and trucks. Mercedes-Benz is a division of its parent company, Daimler AG...
in 1998. It is a plastic key to be used in place of the traditional metal key. Electronics that control locking systems and the ignitions made it possible to replace the traditional key with a sophisticated computerized "Key". It is considered a step up from remote keyless entry
Remote keyless system
A remote keyless system is a system designed to permit or deny access to premises or automobiles. While the "remote" system is portable and has locking capabilities, the exact phrase "keyless entry" is solely reserved for the numeric dials or keypads that are located on or near the driver side door...
. The SmartKey adopts the remote control buttons from keyless entry into the SmartKey fob. Once inside a Mercedes-Benz vehicle, the SmartKey fob unlike keyless entry fobs, is placed in the ignition slot where a starter computer verifies the rolling code. Verified in milliseconds it can then be turned as traditional key to start the engine. The device was designed with cooperation of Siemens
Siemens AG
Siemens AG is a German multinational conglomerate company headquartered in Munich, Germany. It is the largest Europe-based electronics and electrical engineering company....
Automotive and Huff
Huff
Huff or huffing may refer to:* Huff , a Showtime television program* Huff * Huff and puff apparatus* Huff-Duff High Frequency Direction Finder* Huff-Daland Aero Corp...
exclusively for Mercedes-Benz but many luxury manufacturers have implemented similar technology based on the same idea.
The SmartKey's electronics are embedded in a hollow, triangular piece of plastic, wide at the top, narrow at the bottom, squared-off at the tip with a half-inch-long insert piece. The side of the SmartKey also hides a traditional Mercedes Huff key that can be pulled out from a release at top. The metal key is used for valet purposes such as locking the glovebox
Glovebox
A glovebox is a sealed container that is designed to allow one to manipulate objects where a separate atmosphere is desired. Built into the sides of the glovebox are gloves arranged in such a way that the user can place their hands into the gloves and perform tasks inside the box without breaking...
and/or trunk before the SmartKey is turned over to a parking attendant. Once locked manually, the trunk cannot be opened with the SmartKey or interior buttons. The key fob utilizes a radio-frequency transponder to communicate with the door locks, but it uses infrared to communicate with the engine immobilizer system. Original SmartKeys had a limited frequency and could have only been used in line-of-sight for safety purposes. The driver can also point the smart key at the front driver side door while pushing and holding the unlock button on the SmartKey and the windows and the sunroof will open in order to ventilate the cabin. Similarly, if the same procedure is completed while holding the lock button, the windows and sunroof will close. In cars equipped with the Active Ventilated Seats, the summer opening feature will activate the seat ventilation in addition to opening the windows and sunroof.
In addition to the SmartKey, Mercedes-Benz integrates as an option Keyless Go
Keyless Go
Keyless Go is a generic term for an automotive technology which allows a driver to lock and unlock a vehicle without using the corresponding SmartKey buttons. Once a driver enters a vehicle with an equipped Keyless Go SmartKey or Keyless Go wallet size card, they have the ability to start and...
; this feature allows the driver to keep the SmartKey in their pocket, yet giving them the ability to open the doors, trunk as well as starting the car without ever removing it from their pocket. The Keyless Go SmartKey was originally offered only in SmartCard format although the SmartKey Card has been discontinued in favor of the chrome SmartKey.