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.
Keyless Systems - Advanced Key Is Inoperative
2009 Mazda 6 V6-3.7LSECTION Keyless Systems - Advanced Key Is Inoperative
Bulletin No: 09-013/09
Last Issued: 03/18/2009
Subject:
ADVANCED KEY DOES NOT OPERATE
APPLICABLE MODEL(S) / VINS
2009 MAZDA6
DESCRIPTION
Some customers may complain that the advanced key does not work at all. This may be due to poor contact caused by an oxidation between the battery and the transmitter terminals. The coating procedure for the terminals inside the transmitter has been changed during mass-production to eliminate this concern.
Customer's having this concern should have their vehicle repaired using the following repair procedure.
REPAIR PROCEDURE
1. Verify concern.
2. Remove auxiliary key from back of transmitter body.
3. Verify transmitter build date code at bottom right corner of transmitter body.
- If transmitter date code is BEFORE 11/28/08, proceed to Step 4.
- If transmitter date code is AFTER 11/28/08, refer to Workshop Manual diagnostics.
4. Replace advanced key transmitter.
5. Perform transmitter programming using Mazda Modular Diagnostic System (M-MDS) to allow security access to smart keyless entry system.
6. Confirm doors can be locked / unlocked and engine can be started with new transmitter.
7. Destroy old transmitter.
PART(S) INFORMATION
WARRANTY INFORMATION
NOTE:
^ This warranty information applies only to verified customer complaints on vehicles eligible for warranty repair.
^ This repair will be covered under Mazda's New Vehicle Limited Warranty term.
^ Additional diagnostic time cannot be claimed for this repair.
Disclaimer
Last Issued: 03/18/2009
Subject:
ADVANCED KEY DOES NOT OPERATE
APPLICABLE MODEL(S) / VINS
2009 MAZDA6
DESCRIPTION
Some customers may complain that the advanced key does not work at all. This may be due to poor contact caused by an oxidation between the battery and the transmitter terminals. The coating procedure for the terminals inside the transmitter has been changed during mass-production to eliminate this concern.
Customer's having this concern should have their vehicle repaired using the following repair procedure.
REPAIR PROCEDURE
1. Verify concern.
2. Remove auxiliary key from back of transmitter body.
3. Verify transmitter build date code at bottom right corner of transmitter body.
- If transmitter date code is BEFORE 11/28/08, proceed to Step 4.
- If transmitter date code is AFTER 11/28/08, refer to Workshop Manual diagnostics.
4. Replace advanced key transmitter.
5. Perform transmitter programming using Mazda Modular Diagnostic System (M-MDS) to allow security access to smart keyless entry system.
6. Confirm doors can be locked / unlocked and engine can be started with new transmitter.
7. Destroy old transmitter.
PART(S) INFORMATION
WARRANTY INFORMATION
NOTE:
^ This warranty information applies only to verified customer complaints on vehicles eligible for warranty repair.
^ This repair will be covered under Mazda's New Vehicle Limited Warranty term.
^ Additional diagnostic time cannot be claimed for this repair.
Disclaimer
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.