Mazda CX-5 key fob malfunction requiring reprogramming after battery replacement on Mazda CX-5

Some Mazda CX-5 owners report experiencing key fob malfunctions after replacing the battery, which can often be resolved by reprogramming the key fob. This issue may arise if the new CR2025 battery is not properly seated or if the reprogramming steps are not followed correctly. Owners are advised to press and hold both the lock and unlock buttons within 10 seconds of inserting the new battery to initiate the reprogramming process. After reprogramming, some owners find it necessary to test all key fob functions, such as locking, unlocking, and trunk opening, to ensure everything is working properly. If the key fob continues to malfunction despite reprogramming, it is recommended to seek assistance from a Mazda dealership or an automotive locksmith for further troubleshooting.