CX-9 AWD V6-3.7L (2008)
Keyless Entry Transmitter Battery: Service and Repair
Card Key Battery Replacement [Advanced Keyless System]
CARD KEY BATTERY REPLACEMENT [ADVANCED KEYLESS SYSTEM]
1. Pull out the auxiliary key.
2. Replace the cap using a flathead screwdriver, then rotate and remove the cap.
CAUTION: Do not turn the cap excessively. The cap may be damaged.
3. Insert a flathead screwdriver into the crack and press the battery out.
4. Insert the new battery (CR2025) with the positive pole (+) facing the (+) mark on the cap.
Battery specification
Lithium CR2025 x 1