Do it yourself
Frequently asked questions about cars and motorcycles
Car tutorial (Do it yourself) Motorcycle tutorial (Do it yourself) Frequently Asked Questions

How to Replace the Remote Battery of the Mazda 3?

Model: Mazda 3 MK 4, BP - Years: 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026
Part: Key

See other generations:
Video tutorial

In this tutorial, you will see how to replace the remote battery of the Mazda 3, a very simple and quick operation. You will need a small flat-head screwdriver and a replacement CR2032 battery.

First, unlock the rear door by pressing the appropriate button, then remove the metal cover, extract the emergency key, and using the screwdriver in the indicated slot, unlock the front door as well. Next, open the circular cap, remove the old battery, and insert the replacement, ensuring correct polarity.

To reassemble everything, simply follow the reverse procedure.


Posted on 27 October 2026 by ScegliAuto


Related tutorials

How to Replace the Remote Battery of the Mazda 3
How to Replace the Remote Battery of the Mazda 3
Mazda 3 (2013-2019 / BN, MK 3, BM) Replacing the battery of the Mazda 3 remote is very simple. To replace the battery, you need to: - open the remote by inserting a flat-head screwdriv…
How to Replace the Key Battery on a Mazda 3
How to Replace the Key Battery on a Mazda 3
Mazda 3 (2003-2009 / BK, MK 1) How to replace the battery in the key fob for a Mazda 3? Here's how: take your key fob and press the button to release the metal key. Once extracted,…
How to Replace the Battery in a Mazda 3 Remote Key?
How to Replace the Battery in a Mazda 3 Remote Key?
Mazda 3 (2013-2019 / BN, MK 3, BM) To replace the battery in a Mazda 3 remote key, detach the cover on the back of the remote by simply pulling it off. Now, using a screwdriver, pry un…

    Frequently Asked Questions

    • Mazda 3 2019-2026 - What does the wrench light on the Mazda 3 indicate? Read answer
    • Mazda 3 2009-2013 - What does the wrench light on the Mazda 3 dashboard mean? Read answer

How to Replace the Gear Knob of the Opel Meriva

This guide shows you how to independently replace the gear knob of the Opel Meriva. First, remove the existing knob by rotating it until you hear a click, then pull it upwards to remove it. After removing the knob, install the new one in the same manner. Once the new knob is in place, test the gear operation by shifting through the gears, and also check the reverse gear by pressing the button underneath the knob. The knob you install can be a generic model.

Watch the video!


by ScegliAuto

More videos