We are used to accompanying you in the small problems that go with the use of your car. In this guide, we are going to look at a problem that may seem insignificant but that quickly turns out to be bothering if it is not repaired. In truth, we are going to help you to know how to replace my Audi A5 card battery? The benefit of cards is that they work hands-free, but without power your card will be useless. That’s why, first, we will see how the card functions, then how to change the battery of the card of your Audi A5?, and, at last, which is the battery that corresponds to the card of your Audi A5.

replace-key-card-battery-audi-a5

How does the key card of your Audi A5 operate?

Before we explain how to change the batteries in your Audi A5 hands-free card, we will quickly explain how it works and the benefits it will offer you. Who hasn’t had difficulty finding their car keys in their bag or pocket? For a few years now, car makers have been looking into this issue. With the advent of new wireless solutions, key problems will quickly become a thing of the history! We are going to reveal you the product features and operation of your car key card now:

  • It uses a wireless technology that emits a frequency of 433 MHz.
  • Receivers/transmitters are present on the car and on the card so that both can connect.
  • It allows you to open the Audi A5 simply by passing your hand in front of the door or by pulling the handle when the card is close to your car
  • .

  • There are two types of key card, one that allows to open and close like a centralized locking mechanism with the help of a press button, and the other one that allows to open without even touching the card.
  • There is a spare key in the card so that you can open the door and start your Audi A5 if you run out of battery power.

How do I replace the card battery of my Audi A5?

We will in this part move on to the part that interests you the most in this article content, how to change the key card battery of an Audi A5? Effectively this wireless technology requires energy to operate. When the batteries of your card are flat you will not be able to wireless open the doors of your car, but with the help of the integrated physical key you can do it physically. Relating to the ignition, all you have to do is insert the card in the slot provided for this purpose, even without a battery, it has a chip that allows your car to start. We now move on to the procedure for replacing the battery of the card in your Audi A5:

  • Press the button at the bottom and pull out the emergency key concurrently.
  • You will need to see a tab that will allow you to open the case of your card in half.
  • Use a thin object to remove the flat battery from the card
  • .

  • Install the new battery in the slot provided.
  • Close the card.
  • On some models it will work immediately, on others you will have to press the button 4 times to reactivate it.
  • Which kind of of battery to purchase for the card of my Audi A5?

    Finally, to end our article we will help you to select the card battery type of your Audi A5. They all look very equivalent and it is not always easy to select the right one. It is a button size 3V Lithium CR battery, regarding the number of the battery according to the year of your Audi A5, it can be either the 2016, the 2032 or the 1620.

    If perhaps you have any further questions about the Audi A5, do not hesitate to consult our Audi A5 category.