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March 9, 2020 Service bulletin

Key Transmitter Power Saving Function: When the key transmitter Power Saving Function is turned ON,...

Mazda technical service bulletin SA-040-20 for 2019-2020 Mazda MAZDA3 and 2020 Mazda CX-30.

Bulletin number
SA-040-20
Component
Electrical system: 12v/24v/48v battery
Summary
Key Transmitter Power Saving Function: When the key transmitter Power Saving Function is turned ON, transmitter battery power consumption is restricted, thereby extending the transmitter battery life. IMPORTANT:  The engine will not start unless the key transmitter is held over the Start Stop button.  Outside door handle lock/unlock touch sensor is inoperative.  Key transmitter indicator lights are inoperative. The key transmitter control functions (i.e. locking/unlocking door, etc.) are operational when pressing the transmitter switches, even while the key power saving function is turned ON.

Owners of these vehicles have filed 19 complaints in the electrical category.

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