Mercedes Benz Key Expert Evo Smart Key Tester & Remote Signal Tester For All Models. Home / PRO Equipment / Key Programming. Transponder Chips, TPX Chips, PCF Chips, Remote Controls, Smart Keys, Proximity Keys, Fobik Keys, Remote Parts, Remote Covers, Smart Key Covers, Silicone Remote Covers, Locksmith Tools, Remote Batteries, Remote Circuit. Proximity and Smart Key Systems Tester The TDB003 Proximity/Smart Key Systems Tester offers a simple and cost effective way to diagnose and test problems relating to the vehicle immobiliser system, which is made up of a number of components. The TDB003 enables the transponder key.
Contents.How it works The smart key allows the driver to keep the pocketed when unlocking, locking and starting the vehicle. The key is identified via one of several in the car's bodywork and a radio pulse generator in the key housing. Depending on the system, the vehicle is automatically unlocked when a button or sensor on the door handle or trunk release is pressed. Vehicles with a smart-key system have a mechanical backup, usually in the form of a spare key blade supplied with the vehicle. Some manufacturers hide the backup lock behind a cover for styling. A push-button ignition switch in place of the immobilizer on a equipped with the Smart key.Vehicles with a smart-key system can disengage the and activate the without inserting a key in the ignition, provided the driver has the key inside the car.
On most vehicles, this is done by pressing a starter button or twisting an ignition switch.When leaving a vehicle that is equipped with a smart-key system, the vehicle is locked by either pressing a button on a door handle, touching a capacitive area on a door handle, or simply walking away from the vehicle. The method of locking varies across models.Some vehicles automatically adjust settings based on the smart key used to unlock the car. User preferences such as seat positions, steering wheel position, exterior mirror settings, climate control (e.g.
Temperature) settings, and stereo presets are popular adjustments. Some models, such as the, even have settings to prevent the vehicle from exceeding a maximum speed if it has been started with a certain key.Nomenclature. This section is empty. You can help. ( June 2017)Keyless Go Keyless Go (also: Keyless Entry / Go; Passive Entry / Go) is Mercedes' 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 stop the engine, without inserting the SmartKey. A built within the SmartKey allows the vehicle to identify a driver.
An additional safety feature is integrated into the vehicle, making it impossible to lock a SmartKey with Keyless Go inside a vehicle. Hardware blocks on the Keyless Entry/Go ECUThe system works by having a series of LF ( 125 kHz) transmitting antennas both inside and outside the vehicle. The external antennas are located in the door handles.
When the vehicle is triggered, either by pulling the handle or touching the handle, an LF signal is transmitted from the antennas to the key. The key becomes activated if it is sufficiently close and it transmits its ID back to the vehicle via RF ( 300 MHz) to a receiver located in the vehicle. If the key has the correct ID, the PASE module unlocks the vehicle.The hardware blocks of a Keyless Entry / Go ECU are based on its functionality:. transmitting low-frequency LF signals via the 125 kHz block.
receiving radio frequency RF signals ( 300 MHz) from the built-in receiver block. encrypting and decrypting all relevant data signals (security).
communicating relevant interface signals with other.Inside Outside detection The smart key determines if it is inside or outside the vehicle by measuring the strength of the LF fields. In order to start the vehicle, the smart key must be inside the vehicle.System reaction times The mark of a good passive entry system is that the user never hits the 'wall'.
This happens when the user pulls the door handle to its full extent before the door is unlocked. The handle has to be released and pulled again to gain access. Good systems have an override feature that allows the doors to be opened more quickly.Security requirements It is important that the vehicle can't be started when the user and therefore the smart key is outside the vehicle. This is especially important at fueling stations where the user is very close to the vehicle. The internal LF field is allowed to overshoot by a maximum of 10 cm to help minimise this risk. Maximum overshoot is usually found on the side windows where there is very little attenuation of the signal. Relay Station AttackA second scenario exists under the name 'relay station attack' (RSA).
The RSA is based on the idea of reducing the long physical distance between the car and the regular car owner's SmartKey. Two relay stations will be needed for this: The first relay station is located nearby the car and the second is close to the SmartKey. So on first view, the Keyless Entry / Go ECU and the SmartKey could communicate together.
A third person at the car could pull the door handle and the door would open. However, in every Keyless Entry / Go system provisions exist to avoid a successful two-way communication via RSA.
Some of the most known are:. measuring time to detect illegal high values. measuring to detect illegal products. measuring of the. measuring the response time of 125 kHz. using a more complex (i.e.
) which can't be demodulated and modulated by a simple relay stationFurthermore, Keyless Entry / Go communicates with other Control Units within the same vehicle. Depending on the electric car architecture, the following are some Control Systems that can be enabled or disabled:. ESCL Electric Steering Column Lock. EIS Electronic Ignition Switch.
Central door locking system. (Motor management system). BCU Body control unitAnother possibility is using a motion sensor within the key fob. Internal LF field dead spots Dead spots are a result of the maximum overshoot requirement from above. The power delivered to the internal LF antennas has to be tuned to provide the best performance i.e. Minimum dead spots and maximum average overshoot. Dead spots are usually near the extremities of the vehicle e.g.
The rear parcel shelf.Battery Backup If the battery in the smart key becomes depleted, it is necessary for there to be a backup method of opening and starting the vehicle. Opening is achieved by an emergency (fully mechanical) key blade usually hidden in the smart key. On many cars emergency starting is achieved by use of an. The user either has to put the key in a slot or hold it near a special area on the cockpit, where there is an inductive coil hidden behind which transfers energy to a matching coil in the dead key fob using.Slots have proven to be problematic, as they can go wrong and the key becomes locked in and cannot be removed. Another problem with the slot is it can't compensate for a fob battery below certain operating threshold. Most smart key batteries are temperature sensitive causing the fob to become intermittent, fully functional, or inoperative all in the same day.Special Cases A Keyless Entry / Go system should be able to detect and handle most of the following cases:.
SmartKey Transponder was forgotten in the rear trunk. More than one SmartKey is present inside the car. SmartKey getting lost during the drive.
Smartkey battery lowHistory. The first Keyless Entry / Go ECU of the MB S-Class car series 1998/99The system is based on a technology invented by Siemens VDO called PASE: Passive Start and Entry System. It operates in the of radio frequencies. Keyless Entry / Go was introduced first by in the S-Class car series in 1998.Outlook Today a Keyless Entry / Go system is a state-of-the art technology and still has a lot of potential to optimise. Here are some general trends of the advance (AD) and series development (SD):. SD: reduction of used LF antennas in low-cost compact cars (results in a loss of detection quality).
AD: using electric field antennas instead of magnetic field antennas (cost reduction). AD: using microwave frequencies (radar) instead of an LF and RF combination (more comfort).
AD: would identify the user and not the SmartKey transponderEffectiveness A test by revealed that 20 car models with Keyless Go could be entered and driven away without the key. In 2014, 6,000 cars (about 17 per day) were stolen using keyless entry in. See also.References.
Contents.How it works The smart key allows the driver to keep the pocketed when unlocking, locking and starting the vehicle. The key is identified via one of several in the car's bodywork and a radio pulse generator in the key housing. Depending on the system, the vehicle is automatically unlocked when a button or sensor on the door handle or trunk release is pressed. Vehicles with a smart-key system have a mechanical backup, usually in the form of a spare key blade supplied with the vehicle. Some manufacturers hide the backup lock behind a cover for styling.
A push-button ignition switch in place of the immobilizer on a equipped with the Smart key.Vehicles with a smart-key system can disengage the and activate the without inserting a key in the ignition, provided the driver has the key inside the car. On most vehicles, this is done by pressing a starter button or twisting an ignition switch.When leaving a vehicle that is equipped with a smart-key system, the vehicle is locked by either pressing a button on a door handle, touching a capacitive area on a door handle, or simply walking away from the vehicle. The method of locking varies across models.Some vehicles automatically adjust settings based on the smart key used to unlock the car. User preferences such as seat positions, steering wheel position, exterior mirror settings, climate control (e.g. Temperature) settings, and stereo presets are popular adjustments.
Some models, such as the, even have settings to prevent the vehicle from exceeding a maximum speed if it has been started with a certain key.Nomenclature. This section is empty. You can help. ( June 2017)Keyless Go Keyless Go (also: Keyless Entry / Go; Passive Entry / Go) is Mercedes' 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 stop the engine, without inserting the SmartKey. A built within the SmartKey allows the vehicle to identify a driver. An additional safety feature is integrated into the vehicle, making it impossible to lock a SmartKey with Keyless Go inside a vehicle.
Hardware blocks on the Keyless Entry/Go ECUThe system works by having a series of LF ( 125 kHz) transmitting antennas both inside and outside the vehicle. The external antennas are located in the door handles. When the vehicle is triggered, either by pulling the handle or touching the handle, an LF signal is transmitted from the antennas to the key.
The key becomes activated if it is sufficiently close and it transmits its ID back to the vehicle via RF ( 300 MHz) to a receiver located in the vehicle. If the key has the correct ID, the PASE module unlocks the vehicle.The hardware blocks of a Keyless Entry / Go ECU are based on its functionality:. transmitting low-frequency LF signals via the 125 kHz block.
receiving radio frequency RF signals ( 300 MHz) from the built-in receiver block. encrypting and decrypting all relevant data signals (security). communicating relevant interface signals with other.Inside Outside detection The smart key determines if it is inside or outside the vehicle by measuring the strength of the LF fields. In order to start the vehicle, the smart key must be inside the vehicle.System reaction times The mark of a good passive entry system is that the user never hits the 'wall'. This happens when the user pulls the door handle to its full extent before the door is unlocked.
The handle has to be released and pulled again to gain access. Good systems have an override feature that allows the doors to be opened more quickly.Security requirements It is important that the vehicle can't be started when the user and therefore the smart key is outside the vehicle. This is especially important at fueling stations where the user is very close to the vehicle. The internal LF field is allowed to overshoot by a maximum of 10 cm to help minimise this risk. Maximum overshoot is usually found on the side windows where there is very little attenuation of the signal. Relay Station AttackA second scenario exists under the name 'relay station attack' (RSA).
The RSA is based on the idea of reducing the long physical distance between the car and the regular car owner's SmartKey. Two relay stations will be needed for this: The first relay station is located nearby the car and the second is close to the SmartKey. So on first view, the Keyless Entry / Go ECU and the SmartKey could communicate together. A third person at the car could pull the door handle and the door would open. However, in every Keyless Entry / Go system provisions exist to avoid a successful two-way communication via RSA.
Some of the most known are:. measuring time to detect illegal high values. measuring to detect illegal products. measuring of the. measuring the response time of 125 kHz. using a more complex (i.e.
) which can't be demodulated and modulated by a simple relay stationFurthermore, Keyless Entry / Go communicates with other Control Units within the same vehicle. Depending on the electric car architecture, the following are some Control Systems that can be enabled or disabled:.
ESCL Electric Steering Column Lock. EIS Electronic Ignition Switch. Central door locking system. (Motor management system). BCU Body control unitAnother possibility is using a motion sensor within the key fob. Internal LF field dead spots Dead spots are a result of the maximum overshoot requirement from above. The power delivered to the internal LF antennas has to be tuned to provide the best performance i.e.
Minimum dead spots and maximum average overshoot. Dead spots are usually near the extremities of the vehicle e.g. The rear parcel shelf.Battery Backup If the battery in the smart key becomes depleted, it is necessary for there to be a backup method of opening and starting the vehicle.
![Proximity Smart Key Tester Proximity Smart Key Tester](/uploads/1/2/4/3/124375518/178022167.png)
Opening is achieved by an emergency (fully mechanical) key blade usually hidden in the smart key. On many cars emergency starting is achieved by use of an. The user either has to put the key in a slot or hold it near a special area on the cockpit, where there is an inductive coil hidden behind which transfers energy to a matching coil in the dead key fob using.Slots have proven to be problematic, as they can go wrong and the key becomes locked in and cannot be removed. Another problem with the slot is it can't compensate for a fob battery below certain operating threshold.
Most smart key batteries are temperature sensitive causing the fob to become intermittent, fully functional, or inoperative all in the same day.Special Cases A Keyless Entry / Go system should be able to detect and handle most of the following cases:. SmartKey Transponder was forgotten in the rear trunk. More than one SmartKey is present inside the car.
SmartKey getting lost during the drive. Smartkey battery lowHistory. The first Keyless Entry / Go ECU of the MB S-Class car series 1998/99The system is based on a technology invented by Siemens VDO called PASE: Passive Start and Entry System. It operates in the of radio frequencies. Keyless Entry / Go was introduced first by in the S-Class car series in 1998.Outlook Today a Keyless Entry / Go system is a state-of-the art technology and still has a lot of potential to optimise. Here are some general trends of the advance (AD) and series development (SD):.
SD: reduction of used LF antennas in low-cost compact cars (results in a loss of detection quality). AD: using electric field antennas instead of magnetic field antennas (cost reduction). AD: using microwave frequencies (radar) instead of an LF and RF combination (more comfort). AD: would identify the user and not the SmartKey transponderEffectiveness A test by revealed that 20 car models with Keyless Go could be entered and driven away without the key. In 2014, 6,000 cars (about 17 per day) were stolen using keyless entry in. See also.References.