1.This smart LCD car key is compatible with what kinds of cars?
Answer: This smart LCD car key is compatible with all the cars with Engine Start/Stop.
2. Will this device break the safety of the cars?
Answer: our smart LCD car key doesn't change any original functions of the car. the communication between the key and car is still same, so the safety is still same as original key.
3. How long can the built-in battery work, and how to open the door if the battery is empty?
Answer: The volume of the battery is 450mA, usually it can work 30 days, even if the screen can't display, the comfort access function can still operate the car for half year.
4. Will the original key be affected after soldering?
Answer: During assembling, you only need to take out the original PCB board and solder the wires with each button, so if you don't want to use our key, then you can remove all the wires and put it into the original case of your key