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HOMESERVICE MANUALSMAZDA2023CX-5 SREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 201 (SECURITY AND LOCKS)IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMINGNO. 2 PROGRAMMING PROCEDURE AFTER PCM REPLACEMENTPROCEDURE
2023 Mazda CX-5 S

No. 2 Programming Procedure After PCM Replacement: Procedure

2023 Mazda CX-5 SSECTION Procedure
WARNING: This page is about a different car, the 2017 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Locating Remote Transmitter
G09787835Courtesy of MAZDA MOTORS CORP.
Step Procedure Action after procedure
1 REPLACE PCM
Refer to PCM REMOVAL/INSTALLATION to perform PCM replacement.
(See PCM REMOVAL/INSTALLATION .)		 Go to the next step.
2 PERFORM PARAMETER RESET
  1. Connect the M-MDS to the DLC-2. (See M-MDS Connecting Procedure .)
  2. Switch the ignition ON (engine off).
    NOTE:
    • Although the security indicator light illuminates for approx. 3 s and then turns off or flashes, continue to perform the procedure as indicated.
  3. After vehicle identification, select the following from the M-MDS initial screen.
    1. "Body"
    2. "Security"
    3. "PATS Functions"
  4. Then, select the following from the screen menu.
    • "Parameter Reset"
  5. Input the start stop unit and PCM incode and cancel the security access according to the directions on the M-MDS screen.
    NOTE:
    • Depending on the vehicle specification, a specified time is required until the screen changes to the incode input screen. The horn sounds two times when the incode can be input.
  6. Perform the operation according to the directions on the M-MDS screen.
    NOTE:
    • "Parameter reset completed" is displayed on the M-MDS screen.
  7. Select "No" according to the directions on the M-MDS.
CAUTION:
  • Because the procedure switches to the procedure for key ID number clearing, if "Yes" is selected on the M-MDS screen, select "No".
 Go to the next step.
3 M-MDS COMPLETION
  1. Wait for 5 s or more after the M-MDS is completed and switch the ignition off.
 Go to the next step.
4 PERFORM IMMOBILIZER SYSTEM FUNCTION VERIFICATION
  1. Bring each remote transmitter into the vehicle one at a time and switch the ignition ON (engine off).
  2. Verify that the security indicator light illuminates, and switch the ignition off.
  3. Are there other remote transmitters to be programmed?
 Yes Change the key and repeat Step 4.
No Go to the next step.
5 VERIFY PARAMETER RESET IS COMPLETED
NOTE:
  • Each remote transmitter is brought inside the vehicle one at a time to start the engine.
  1. Place only the programmed remote transmitter on the passenger seat and verify that the engine starts.
  2. Does engine start?
 Yes Procedure is completed.
No Perform the related DTC inspection to repair the malfunctioning part.
RENDER: 1.0x

NO RELATED

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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.