Replacing the battery in the key - what to do if the car remote refuses to obey?
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Replacing the battery in the key - what to do if the car remote refuses to obey?

How to replace the batteries in the key depends on its model. It is worth knowing that no battery is discharged without warning. As it comes to the end of its life, you will surely notice that the remote control performs worse than ever. Even then, you should be aware that changing the battery in the key will probably be necessary. If you underestimate it, you will have to reckon with serious consequences. Sometimes it is necessary to reinitialize or code. How to replace the batteries in the key yourself, and when to entrust this task to a specialist? Check!

How to replace the batteries in the key yourself?

Car manufacturers are outdoing each other in developing increasingly complex keys. Some of them have really advanced features. However, they all have one thing in common - they need to change batteries from time to time. With a key without it, you can forget about remote locking, unlocking or locating your car. Therefore, it is extremely important to correct this malfunction as soon as possible.

How to replace the batteries in the key step by step? 

It is impossible to determine in advance how to replace the batteries in the key step by step. Each car remote has a different structure, so the individual replacement steps will also be different. In most cases, it is enough to pry off one of the body elements, and the remote control itself will fall apart.

However, if this is difficult for you, avoid using force. It is worth looking into the manual of the car itself, where you will find up-to-date information on this issue.. What else should not be done when replacing the battery in a car key?

Replacing the battery in the car key - what not to do?

If you are wondering how to change the batteries in your key without damaging anything, you must avoid making a major mistake. He holds the bond itself like coins with two fingers. This is a natural trick, but if you do it, changing the battery in the key won't be very effective. Why? Such a grip will drastically reduce battery life. As a result, replacing the battery in the key will not bring improvement. 

Replacing the battery in the car key - reinitialization

Almost every replacement of the battery in the key must include a subsequent reinitialization process. However, practice says that it will not be needed in all cases. Why? Some remotes are designed so that even after the link is removed for a few minutes, they will not refuse to obey. However, if some functionality is lost, you must take certain steps to ensure that the key battery is replaced correctly.

  1. Insert the key into the ignition.
  2. Set it to the ignition position.
  3. Press the car lock button on the remote control and hold it for a few seconds.
  4. Switch off the ignition and remove the ignition key.

You already know how to change the batteries in the key. However, all the processes that you need to complete do not end there!

Replacing the battery in the key and coding - what does it look like?

Just changing the battery in the car key is not enough - there is also an encoding. This applies to situations where the previous remote was destroyed or you just want to make another one. In this case, coding, also known as adaptation, is necessary. This is relatively simple, but requires the use of the appropriate hardware. 

How to replace the batteries in the key with subsequent coding?

  1. Disconnect the wireless transmitter element from the remote control and connect the diagnostic tester to the vehicle.
  2. Insert the key into the ignition switch and turn on the ignition.
  3. Using the diagnostic tester, program the wireless key fob.
  4. Perform signal recognition and key coding.
  5. Confirm all data with a scanner.

How much does it cost to replace a battery in a car key? It all depends on what kind of battery is installed in your remote control. Prices start at around 3 euros, so the cost is low if you do the process yourself.

Replacing the battery in the key is not difficult, although it also depends on the model. If you are unable to handle this yourself, contact an auto electrician. Some watch shops also offer this service.

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