Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Transmitter Battery Replacement [Keyless Entry System]
2009 Mazda CX-9 FWD V6-3.7LSECTION Transmitter Battery Replacement [Keyless Entry System]
TRANSMITTER BATTERY REPLACEMENT [KEYLESS ENTRY SYSTEM]
1. Insert a small flathead screwdriver into the transmitter notch and remove the key from the transmitter by pressing the tab.
2. Insert a small flathead screwdriver into the transmitter notch and the transmitter.
3. Remove the battery.
4. Install the new battery (CR1620) with the positive pole facing down.
5. Align the upper and lower cover and close the transmitter.
Used battery
- Lithium battery CR1620
Battery life
- Approx. 2 years (when used 10 times/day)
6. Install the key to the transmitter.
CAUTION:
- When attaching the key to the transmitter, squeeze them together until a click sound is heard.
- If the key is not securely attached it will separate from the transmitter.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.