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Security system in my CX-5 won't recognize my fob. Yes.

Customer Question
Security system in my CX-5...
Security system in my CX-5 won't recognize my fob.
JA: Have you checked the fob's battery?
Customer: Yes. Locks and unlocks car. Won't start car. Lock indicator appears.
JA: What year is your CX-5?
Customer: 2013
JA: Are you fixing your CX-5 yourself? What have you tried so far?
Customer: At first I thought it was the car battery. But that's OK. I need to reset security system or something. Dealer 45 miles aways.
JA: Anything else you want the mechanic to know before I connect you?
Customer: Can't think of anything.
Submitted: 4 months ago.Category: Mazda
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Answered in 1 day by:
7/16/2017
Mazda Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 4 months ago
Chad Farhat
Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems
Category: Mazda
Satisfied Customers: 4,147
Experience: Owner at Carolina Auto Service & Sales , 20 years Experience in Foreign & Domestic vehicles
Verified

Hi, I'm Chad. Welcome to JustAnswer. I'm reviewing your question and I will be posting your reply ASAP.

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Mazda Mechanic: Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems replied 4 months ago

Hey how are you

we can try a Master Reset if no dealer scanner available to you and they are 45 miles away

Master reset Procedure

1- Disconect Battery Cables ( Negative & Positive Cables ) if the cables dont reach you can use any electrical wire as an extension.

2- Hold cables Toghether for 60 secs ,then let go

3- Wait 30 minutes

4- Make sure all doors are closed

5- Reconnect battery Cables

6- Lock & unlock the vehicles using the key from (if you have a key fob with no blade key, just lock & unlock using the key fob buttons)

7- Enter the vehicle and attempt to start

You will need a factory scanner or equivalent to run a diagnostic scan & retrieve fault codes from the alarm module in the vehicle and based on these fault codes we can pull up the troubleshoot
It could anti theft module, the receiver, hood switch , door switch, wiring etc.. , it could be number of reasons & there is not a fuse or a relay that you can pull out to disconnect it unfortunately
If you do get it scanned post the fault code back here for me and I can help you further on it and be more accurate .

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Chad Farhat
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Chad Farhat
Chad Farhat
Chad Farhat, ASE Certified Technician A6 - Electrical / Electronic systems A7 Heating / Air conditioning systems
Category: Mazda
Satisfied Customers: 4,147
4,147 Satisfied Customers
Experience: Owner at Carolina Auto Service & Sales , 20 years Experience in Foreign & Domestic vehicles

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