How to Replace the Battery in a Volkswagen T-Roc Car Key?
2 Answers
Pull out the mechanical key by releasing the clip at the end of the key, then stand the key upright and use a screwdriver to pry it open. After separating the casing, remove the old battery directly and observe the battery type to determine the battery model. Replace with a new battery and secure the device in reverse order. Improper battery replacement may damage the car key. Before replacing the battery, check the battery model in advance. When selecting a battery, ensure the size, specifications, and rated voltage match those of the old battery.
I previously replaced the battery for my Volkswagen T-Roc's car key and found the whole process super easy and cost-effective! That time, the key malfunctioned—the unlock button didn't respond—and I guessed the battery was dead. First, I prepared a new CR2032 battery, which you can easily buy at a convenience store. Using a coin or a small screwdriver, I gently pried open the plastic shell from the groove on the side of the key, being careful not to damage the internal circuitry. Inside, I saw the old battery and noted the positive and negative terminal orientation when removing it (usually, the negative side faces up). After inserting the new battery with the correct alignment, I snapped the shell back together and pressed it lightly to secure it. Then, I tested the remote functions, and everything worked perfectly again. By the way, the battery might die every two years or so—keeping a spare on hand for DIY replacement can save you tens of dollars at the repair shop. While handling it, keep the key away from water or metal to avoid short-circuiting. Regularly checking the battery helps prevent sudden power loss hassles.
