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Both key fobs for my 2014 mazda 3 will only start the car by…

Customer Question
Both key fobs for...

Both key fobs for my 2014 mazda 3 will only start the car by touching the fob to the start button. batteries have been changed. they will not unlock or lock doors

Mechanic's Assistant: Have you changed a battery before?

Yes

Mechanic's Assistant: Are you fixing your Mazda2 yourself? What have you tried so far?

Would like to fix it myself. just starting

Submitted: 8 months ago.Category: Mazda
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Answered in 4 minutes by:
11/27/2017
Mazda Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 8 months ago
Chad Farhat
Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems
Category: Mazda
Satisfied Customers: 5,801
Experience: Owner at Carolina Auto Service & Sales , 20 years Experience in Foreign & Domestic vehicles
Verified
It lost sync with the car, we can try a master reset if that does not work you will need a factory scanner or equivalent to resync them, no manual way to do it in 2014 unfortunatelyMaster Reset1-Disconnect Both Battery Cables ,Positive & Negative .
2- Touch Cables With Each Other For 60 Secs ( this will take any residual power in the Harness to Reset the Vehicle Modules )
3- Wait 30 min
4- Close all doors and trunk
5- Reconnect Battery Positive First
6- Use The Key in The Driver Side Door
Lock Cylinder to Lock it & Unlock,IF You have only a Key Fob ,use it to lock and unlock
7- Enter a vehicle and Start it.You are very welcome :)
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Chad Farhat
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Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems
Category: Mazda
Satisfied Customers: 5,801
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Experience: Owner at Carolina Auto Service & Sales , 20 years Experience in Foreign & Domestic vehicles

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