For BMW 520 523 530 525 320 325 330 318 316 735 740 750 X3 X5 X7 LCD Car Key For Mercedes C260 E200 E300 S400 S450 S500 GLC GLE

Dear friends, you can refer to the following detailed introduction for shopping!

Question 1: How to judge whether my car can use our smart LCD key?

Answer: As long as your car has one button start function, it supports to use our LCD key, no restriction to any car brand, just depends on whether your car has one button start function or not. If you don't know what is one key start function, then you can refer to this picture, this button in the picture is one key start function. A car that only turns on the ignition through this button is a car with one-touch start function. (Note: The appearance of the Push Start button is different for different brands of cars, and our detail page describes two different buttons for the Push Start function)

Answer: Prepare a good quality original key, test the original key function whether each button is in normal state, can open the car, close the car, open the trunk, and all the functions on the key there is no abnormality, any abnormal situation will lead to welding failure. If there is no abnormal problem with the original key, bring the original key to a cell phone repair store and ask a professional electrician to weld it, first dismantle the original key, then take out the circuit board and analyze the welding, you need to refer to the function of the original key to weld the corresponding function on the appearance. Please refer to the manual we sent to you for the welding method, you need to weld the positive and negative poles, as well as weld the function of each wire harness corresponding to the key. There are detailed welding methods in the manual, but please don't weld by yourself, many customers weld by themselves resulting in damage to the circuit board, as well as welding errors resulting in ineffective function, please take the cell phone repair store to ask a professional electrician to weld.

Question 3: What functions can the smart LCD key realize?

Answer: All the functions of the LCD key depend on the functions on the circuit board of your original key. So what function the original key is, the LCD key is. Meanwhile the LCD key can only realize 4 functions on the original key button, it only has 4 wire harnesses when welding, each wire harness can be welded to correspond to one function of the original key, if the function of the original key on the button exceeds the function of the 4 buttons, such as the key with the function of the 5 buttons, the key with the function of the 6 buttons, and the key with the function of the 7 buttons, in the case of too many functions of the original key button, you will need to give up some of the functions, and you can only Select the most important button function, only 4 can be kept to weld to the smart LCD key. The above just describe the functions on the buttons, some keyless functions that the original key has, it is not a function on the buttons, so you don't need to weld the functions, change to the LCD key are there. If your original key is lower than 4 buttons, then all the functions are available.

Question 4: Does the LCD key support modification of the car logo and wallpaper on the car system, as well as the car model picture

Answer: The LCD keys on the whole Aliexpress platform don't have such a function

Question 5: Many buyers have misunderstanding about the one-touch start function, we need to explain it to the relatives uniformly, can the one-touch start function and remote start function be realized on the smart LCD key?

Answer: In order to use our smart LCD key, your car must have the one-touch start function, which is the condition to decide whether you can use our LCD key or not. But this is not related to whether there is one-touch start function on the key or not, it does not mean that the function that your car has, your key has this function, the car has the function to turn on the air conditioner, the function to turn on the ambient light, the function to play the music, but you can't realize it with your original key. This means that the features that are available on the car are assumed to be on the key this is a misconception. Whether or not the key has a one-touch start function or a remote start function depends on whether or not your original key has such a function. If your original key has such a function, it supports the one-touch start function, if not, it does not support this function.

Question 6: How to use the correct method to charge the smart LCD key, which incorrect method will damage the smart LCD key?

Answer: Please use normal charging head and cable for charging, don't use any fast charging head and cable, any fast charging head and cable will cause the chip of the smart LCD key to burn, the chip burned smart LCD key will not be able to power on. If you receive the goods the first time to find that can not be turned on, please contact customer service first, because it is inside the buckle loose, remove the LCD key reinstallation can be solved.

(This is due to the shaking of the package during transportation, resulting in the loosening of the internal clips)

Answer: Pros, please don't be anxious when you encounter such problems, come to contact your exclusive customer service. Please search our brand: YIQIXIN in the search page of Aliexpress, as long as you make purchases in our brand, consulting any of our stores will be handled for you.(Please find this store to contact customer service)

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Important Tip：

1.100% brand new and high quality modified key shell with LCD screen.

2.Solder by yourself (requires some hands-on ability) or find a professional locksmith to solder the circuit board

3.LCD key functions: unlock, lock, switch the tail box, multifunction button.

4.Does not support mobile APP key, with comfortable entry function(need set obd part).

5.Suitable for all original cars with one-key start function, not suitable for all manual direct-plug car keys.

6.Please confirm whether you have a key start/stop engine buttons function before purchasing(if your car have keyhole can't use smart lcd key, even if you can start the car without plugging it in or putting it in your pocket, you still can't use smart lcd key). It is best.

What is the difference between keyless entry and comfort entry?

[Keyless Entry]: The original car has a keyless entry function, and you need to press the button on the handle to unlock the lock.

[Comfortable entry]: Contactless, automatic unlocking within 1.5 meters near the vehicle, automatic locking more than 5 meters away.

-(need to plug OBD plug)

-When charging the LCD key, please use a common charging head to charge, do not use a fast charging head to charge, as using a fast charging head may damage the battery life.

-Some car model is relatively old, you need two keys to use the LCD key, one key is welded to the LCD key, the other key needs to be inserted into the keyhole, and keep the second key in the car. otherwise only use one key The key might not start the car engine.

-One button start function means that no mechanical key is required, and the car can be started directly by pressing the button on the car key. If your original key does not have one button start function, you will not be able to use this function.

-If you don't have welding tools, you can go to the local mobile phone repair shop or locksmith to check, and then install the instructions to complete the welding.