We are used to accompanying you in the small problems that go with the use of your car. Today, we are going to take a look at an issue that may seem minor but that promptly turns out to be annoying if it is not solved. In fact, we are going to support you to know how to replace my Audi S4 card battery? The benefit of cards is that they work hands-free, but without power your card will be ineffective. That’s why, first, we will see how the card functions, then how to change the battery of the card of your Audi S4?, and, at last, which is the battery that matches to the card of your Audi S4.

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How does the key card of your Audi S4 function?

Before we teach you how to change the batteries in your Audi S4 hands-free card, we will promptly describe how it works and the benefits it will give you. Who hasn’t had issues locating their car keys in their bag or pocket? For a few years now, car manufacturers have been looking into this issue. With the advent of new wireless systems, key problems will promptly become a thing of the history! We are going to show you the 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 motor vehicle and on the card so that both can intercommunicate.
  • It allows you to open the Audi S4 simply by passing your hand in front of the door or by pulling the handle when the card is close to your car
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  • There are two versions of key card, one that allows to open and close like a centralized locking mechanism with the support 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 S4 if you run out of battery power.

How do I change the card battery of my Audi S4?

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 S4? Effectively this wireless technology necessitates energy to function. When the batteries of your card are flat you will not be able to wireless open the doors of your motor vehicle, but with the help of the included physical key you can do it by hand. Regarding the ignition, all you have to do is put the card in the slot included 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 S4:

  • Press the button at the bottom and pull out the emergency key simultaneously.
  • 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 take out the used battery from the card
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  • 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 S4?

    Finally, to finish our article we will support you to choose the card battery type of your Audi S4. They all look very similar and it is not always easy to choose the good one. It is a button size 3V Lithium CR battery, concerning the number of the battery according to the year of your Audi S4, it can be either the 2016, the 2032 or the 1620.

    In the event that you have any further questions about the Audi S4, do not hesitate to consult our Audi S4 category.