What is the battery model for the Touareg key?
3 Answers
The battery model for the Touareg key is CR2025. CR2032 is a lithium manganese dioxide battery, named according to the IEC standard. The naming convention is as follows: C- indicates a chemical battery system with lithium metal as the negative electrode and manganese dioxide as the positive electrode; R- indicates the battery shape is cylindrical (if square, it is replaced by F); 20 indicates the battery diameter is 20mm; 25 represents the battery height is 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 may be significantly shortened. Domestic first-tier brand batteries can generally guarantee this lifespan. Under ideal usage conditions (sealed, room temperature, no moisture, etc.), the lifespan can be further extended to 8 years or even 10 years. Generally, replacing a car key battery involves the following 3 steps: Step 1: Remove the mechanical key. Press the lock button on the side of the smart key to remove the mechanical key. Step 2: Open the battery cover. After removing the mechanical key, you will see a deep slot and a shallow slot at the top of the smart key. The deep slot is the keyhole, while the shallow slot is used to open the battery cover. Insert the mechanical key into the shallow slot and pry it outward to open the battery cover. Once opened, you will see the coin cell battery. Gently pry it out to remove the battery. Step 3: Replace the new battery. Install the new battery, then reattach the battery cover and mechanical key in order. The key battery replacement is now complete.
I've been driving the Touareg for a while now, and the key fob uses a CR2032 battery, which is that flat, round coin-cell type commonly available at supermarkets or auto parts stores. Replacing it yourself is quite simple: first, use a small coin or flathead screwdriver to gently pry open the back cover of the key, being careful not to apply too much force to avoid damaging the plastic clips. When removing the old battery, avoid touching the contacts. Then, insert a new CR2032, ensuring the positive and negative terminals are aligned correctly, and snap the cover back on. Typically, the battery lasts two to three years. If the key starts responding slowly or fails to unlock reliably, it's time for a replacement. I recommend buying branded batteries like Panasonic or Nanfu—they cost around ten yuan, and avoid cheap ones that might leak and damage the key's circuitry. After replacement, test the buttons to ensure they respond properly. Make it a habit to periodically check the key fob's battery level to avoid the embarrassment of it suddenly failing when you're out.
I've researched quite a few car keys in my daily life. The battery model for the Touareg's key is CR2032, which is a standard 3V button cell type with dimensions of approximately 20mm in diameter and 3.2mm thick - quite easy to recognize. The replacement process is also foolproof. Typically, there's a small notch on the back of the key. Gently pry open the cover with a tool, remove the old battery while being careful to clean any dust from the contacts (avoid using a wet cloth). When inserting the new CR2032, make sure the positive side faces upward, then snap the cover back on tightly - that's all there is to it. When the battery is low, it will show a flashing red light or fail to lock the door. It's wise to keep a spare CR2032 in your car or home drawer to avoid being caught off guard in an emergency. When purchasing online or in physical stores, I recommend checking the anti-counterfeit code - counterfeit batteries have smaller capacity and shorter lifespan. Spending a bit more on a quality battery can give you several extra months of usage. Also, take this opportunity to check the key's waterproofing to prevent short circuits from water damage. After doing it yourself once, it becomes routine - just check it every two years, making it super hassle-free.
