Mazda 3 manuals

Mazda 3 Owners Manual: Vehicle Engine Control Unit Reset Procedure

Mazda 3 Owners Manual / Maintenance and Care / Owner Maintenance / Engine Oil / Vehicle Engine Control Unit Reset Procedure

NOTE This procedure is intended for vehicles with the engine oil flexible maintenance setting selected.

After replacing the engine oil, have a repair shop such as an Authorized Mazda Dealer perform the initialization (engine oil data resetting) of the recorded value. If the value recorded by the computer is not initialized, the wrench indicator light may not turn off or it may turn on earlier than normal.

NOTE The initialization (engine oil data resetting) of the recorded value can be performed using the following procedure:

  1. Switch the ignition OFF.
  2. Switch the ignition ON with the selector pressed, and press and hold the selector for about 5 seconds until the master warning light flashes.

Mazda 3. Vehicle Engine Control Unit Reset Procedure


  1. After the master warning light flashes for several seconds,
    the initialization is completed.
Recommended Oil
U.S.A., Canada, and Puerto Rico Use SAE 0W-20 engine oil. Mazda Genuine Oil is used in your Mazda vehicle. Mazda Genuine 0W-20 Oil is required to achieve optimum fuel economy. For maintenanc ...

Inspecting Engine Oil Level
Be sure the vehicle is on a level surface. Warm up the engine to normal operating temperature. Turn it off and wait at least 5 minutes for the oil to return to the oil pan. Pull out the ...

Other materials:

Power Window Lock Switch
This feature prevents all power windows from operating, except the driver's power window. Keep this switch in the locked position while children are in the vehicle. Locked position (button depressed): Only the driver's power window can be operated. Unlocked position (button not depressed ...

Power Systems Personalization Features Setting Procedure
NOTE: Use the IDS (laptop PC) because the PDS (Pocket PC) does not support the POWER SYSTEMS PERSONALIZATION FEATURES SETTING PROCEDURE. 1. Connect the M-MDS to the DLC–2. 2. After the vehicle is identified, select the following items from the initial screen of the M-MDS. ...

Air Cleaner Element Inspection [Mzr 2.0, Mzr 2.5]
1. Remove the air cleaner element.. 2. Inspect the following items: Has the replacement interval come? Is the air cleaner element soiled, damaged, or bent? Are the air cleaner case and the air cleaner element correctly sealed? Is the correct air cleaner element inst ...

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