What is the battery model for the Volkswagen Tayron 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 a chemical battery system with lithium metal as the negative electrode and manganese dioxide as the positive electrode; R- indicates that the battery is cylindrical in shape, and F is used if it is square; 20 indicates that the battery has a diameter of 20mm; 25 represents a battery height of 2.5mm. The nominal voltage is 3.0V, the endpoint voltage is 2.0V, and the rated capacity ranges from 140-170mAh. CR2025 typically has a lifespan of 5 years. If the manufacturer's production level is low or quality control is poor, its lifespan will be significantly shortened. Domestic first-tier brand batteries can generally guarantee this lifespan. If the usage environment is ideal (sealed, room temperature, free from moisture, etc.), the lifespan can be further extended to 8 years or even 10 years. The usage time of a vehicle remote key battery is closely related to the frequency of use. The more frequently it is used, the shorter the lifespan will be. If the remote key battery runs out, the mechanical key can be used directly to unlock and start the vehicle. Car remote keys use button batteries, mainly three types: CR2016, CR2025. For the specific model used in each vehicle, 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 remote batteries. The battery voltage of this type is 3V, while most car key batteries are powered by 9V, so all three batteries need to be replaced each time. 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 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.
As an owner of the Volkswagen Tayron, I've replaced the key battery several times, usually with a CR2032 coin cell. This type of lithium battery is easy to find in supermarkets or on e-commerce platforms. The replacement process is simple: use a thin tool like a screwdriver to gently pry open the key's back cover. Remove the old battery, making sure to place the new CR2032 with the positive side facing up, then snap the cover back on. The battery typically lasts 1-2 years; if the remote becomes less responsive or the range shortens, it's time for a replacement. I recommend keeping a spare battery on hand, and after replacing it, always test the door unlock function to ensure it works properly. Overall, DIY replacement is straightforward, but if you're not confident, there are plenty of online tutorials or you can ask a friend or family member for help. Be careful not to force the plastic casing open to avoid damage. These tips should help you avoid last-minute hassles.
