Mercedes Benz Smart car key maker and Engine ECU synchronization
Lost Mercedes Benz Smart car key? Mercedes Benz Smart car key damaged? Need to program a new Mercedes Benz Smart key? Whether you meet any of the above-mentioned problems? If you do, I suggest you consider to get Mercedes-Benz Smart Key teach-in, plus this procedure synchronizes engine ECU with BSI – can be used when changing damaged ECU or BSI with new/used one!

Mercedes Benz Smart key teach-in workable Smart year range:
Mercedes Benz Smart key teach-in supports Mercedes Benz Smart, no year range limitation, but it only supports K-line compliant Smart car, but work with CAN-BUS compliant Smart key

Conclude the dongle can be used if it adapts each remote with immobilizer/BSI module:
1. Turn ignition ON without starting engine (position 1”).
2. Insert dongle in OBD connector (it is located under steering column, near pedals).
3. The LEDs must lit both, then green must blink few times. If all OK, green LED remains lit and red must be off. If red LED blinks fast, this means an error, you may remove dongle and try again.
4. If red LED is off and green is on, turn OFF the ignition key.
5. Press twice LOCK button on each remote (if 3 button remote used) within 30 secs. Maximum of 4 keys can be programmed.
6. Turn ignition ON again, this completes learning sequence. Remote controls are working only when ignition is OFF; cranking is possible only when vehicle is in UNLOCK-ed state.

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