Keys and Doors 2. Remove the battery by carefully releasing 3. Insert the new battery (type CR2354) with it from the retaining clips at an angle. the ˆ+‡ side facing up. The battery fits snugly so you must slide it into position at an angle toward the Positive contact (the contact located near the center of the key), then press down firmly on the other side, ensuring it is held firmly in its intended position. Note: Tesla recommends using Panasonic CR2354 batteries. These can be purchased through online retailers, local supermarkets, and drug stores. Caution: The battery should press against the spring on the positive contact. Do not place the battery on top of the contact and force it down vertically. Doing so may damage the contact. Note: Wipe the battery clean before fitting and avoid touching the battery's flat surfaces. Finger marks on the flat surfaces of the battery can reduce battery life. 4. Holding the cover at an angle, align the tabs on the widest side of the cover with the corresponding slots on the key, then press the cover firmly onto the key until it snaps into place. 5. Test that the key works by unlocking and locking your vehicle. 8 Model X Owner's Manual