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April 28, 2016 Service bulletin

When reprogramming a control module, always use the GR-8 battery management system power supply mode. if...

Mazda technical service bulletin 1099M for 2007-2016 Mazda MAZDA3, 2013-2016 Mazda CX-5 and 2007-2017 Mazda MAZDA6 and others.

Bulletin number
1099M
Component
Electrical system
Summary
When reprogramming a control module, always use the gr-8 battery management system power supply mode. If not used, the control module reprogramming may fail due to a weak vehicle battery.the gr-8 battery management system power supply mode prevents the vehicle battery from being discharged. This allows the ids to reprogram a control module without interference from a weak or undercharged vehicle battery. Note: control module damage may occur if the gr-8 battery management system power supply mode is not used.

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