We have dedicated this website to help you solve the little problems you can face with your car . Today, we are going to look at an issue that may seem minor but that promptly turns out to be frustrating if it is not solved. Indeed, we are going to help you to know how to replace my Audi A7 card battery? The advantage of cards is that they work hands-free, but with no power your card will be useless. That’s why, first, we will see how the card functions, then how to replace the battery of the card of your Audi A7?, and, finally, which is the battery that matches to the card of your Audi A7.
How does the key card of your Audi A7 function?
Before we teach you how to replace the batteries in your Audi A7 hands-free card, we will quickly describe how it works and the benefits it will give you. Who hasn’t had problems locating their car keys in their bag or pocket? For a few years now, car producers have been looking into this issue. With the advent of new wireless technologies, key problems will quickly become a thing of the history! We are going to show 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 intercommunicate.
- It allows you to open the Audi A7 simply by passing your hand in front of the door or by pulling the handle when the card is next to your car
- There are two versions of key card, one that allows to open and close like a centralized lock 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 A7 if you run out of battery power.
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How do I replace the card battery of my Audi A7?
We will in this part go forward to the part that interests you the most in this document, how to replace the key card battery of an Audi A7? Effectively this wireless technology necessitates energy to function. When the batteries of your card are dead you will not be able to wireless open the doors of your car, but with the help of the included physical key you can do it by hand. Concerning the ignition, all you have to do is insert 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 A7:
- Press the button at the bottom and pull out the emergency key while doing so.
- 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 flat battery from the card
- Put in 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.
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Which kind of of battery to buy for the card of my Audi A7?
At last, to conclude our article we will help you to choose the card battery type of your Audi A7. They all look very identical and it is not always easy to choose the correct one. It is a button size 3V Lithium CR battery, regarding the number of the battery according to the year of your Audi A7, it can be either the 2016, the 2032 or the 1620.
If you need more guides on the Audi A7, go to our Audi A7 category.
