What is the battery model for the Volkswagen Tayron car key?
2 Answers
The battery model is CR2025. It is a lithium manganese dioxide battery, named according to the IEC standard. Among them: C- indicates the chemical battery system with lithium metal as the negative electrode and manganese dioxide as the positive electrode; R- indicates that the shape of the battery is cylindrical, if it is square, F is used instead; 20 indicates that the diameter of the battery is 20mm; 25 represents the height of the battery as 2.5mm. The nominal voltage is 3.0V, the endpoint voltage is 2.0V, and the rated capacity ranges from 140-170mAh. CR2025 usually has a lifespan of 5 years. If the manufacturer's production level is not high or quality control is poor, its lifespan will be greatly shortened. Domestic first-tier brand batteries can generally guarantee this lifespan. If the usage environment is ideal (sealed, room temperature, free from moisture, etc.), its lifespan can be further extended to 8 years or even 10 years. The usage time of the car remote key battery is closely related to the frequency of use. The more frequently it is used, the shorter the usage time will be. If the remote key battery runs out of power, you can directly use the mechanical key to open and start the vehicle. The battery used in car remote keys is a button battery, mainly using three types: CR2016, CR2025, and CR2032. For the specific model used in each case, car owners can refer to the battery model in the user manual for replacement. Button-type CR2016 battery: The usage rate of car key remotes is very high, making it one of the most common car remote batteries. The voltage of this battery is 3V, while general car key batteries are powered by 9V, so each time the battery is replaced, three batteries need to be changed. Examples include Guangben, Toyota, Volkswagen, Mazda, etc. CR2016 specifications: battery diameter 20mm, thickness 1.6mm. Button-type CR2025 battery: Its usage rate is much lower than that of CR2016. However, it is still used in some car keys. It is thicker than the 2016 model but has a relatively higher storage capacity. CR2025 specifications: battery diameter 20mm, thickness 2.5mm. This type of battery is also commonly used in audio remotes. Button battery CR2032:
I've been driving the Volkswagen Tayron for a while, and the key battery model is CR2032, a pretty common button battery. It's not difficult to replace; I usually change it every two or three years, depending on usage frequency. Before each replacement, I check if the key is responding slowly or if the vehicle shows a low battery warning. You can buy a new CR2032 battery online, available on Taobao or at supermarkets for just a few yuan each. When replacing, gently pry open the back cover of the key—don't use too much force to avoid cracking it. Be careful with the positive and negative terminals when installing the new battery; the flat side should face down. After installation, test the unlock button to ensure everything works properly. Keep some good brand batteries like Philips or Sony on hand; they last longer. Avoid exposing the key to water or high temperatures in daily use to extend its lifespan. Remember, doing it yourself saves money and time—no need to bother with a dealership.
