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To change the battery in the 2019 Volkswagen Tiguan's key fob, start by separating the back and front sides of the fob. Inside, you'll find a 3-volt CR2025 battery, which can be easily replaced and purchased from most retailers for under 5 dollars each. This type of battery is commonly used in watches and small mechanical devices. Next, release the folded key and look for a small tab on the plastic panel on the back side of the fob. Press the tab with your finger or a flathead screwdriver to open it. Use the screwdriver to remove the old CR2025 battery and replace it with a new one. Finally, close the remote by following the steps in reverse order.
The price range to change the key fob battery for the 2019 Volkswagen Tiguan is estimated to be between $3 and around $9.