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Drew, Super Mazda Tech.
Category: Mazda
Satisfied Customers: 2188
Experience:  19 yrs. experience. Mazda Senior Certified Tech, with Ford, Linc. & Merc. experience. ASE L1 Advanced Certified Master Tech.
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Pearl, I have a mazda 2006s and I think the BCM is going

Customer Question

Good afternoon.
JA: Hi. How can we be of help?
Customer: Pearl, I have a mazda 2006s and I think the BCM is going bad.
JA: OK. To minimize me, please click the down arrow at the top right corner of this box.
Customer: are you busy?
JA: No. I'm the Mazda Mechanic's Assistant.
Customer: oh, so Alex is busy?
JA: What year is your Mazda2?
Customer: 2006
JA: Are you fixing your Mazda2 yourself? What have you tried so far?
Customer: it's a mazda6
JA: Anything else you want the mechanic to know before I connect you?
Customer: after shutting off the car, about an hour later (sporadic), the right turn signal lights up solid. in both front and back.
JA: Have you checked the fuse?
Customer: yes. both in cabin and under the hood
Submitted: 11 months ago.
Category: Mazda
Customer: replied 11 months ago.
Initally started with both turn signals lighting up solid and the door locks and remote not working. I unplugged the BCM and inspected. It appears fine. Upon reinstall, the door locks worked and then only the right turn signal would light up. I can get the turn signal to turn off by locking then unlocking the car either remote or door panel button. Once the light goes off, about another hour later it comes back on. Everything appears to function correctly when the car is running.
Customer: replied 11 months ago.
Additional questions: I wanted to buy a used BCM that matches mine from eBay
1. Can I plug and play the other BCM?
2. Do I have to take it to the dealer to get 'reprogrammed' or have the remote (switch blade key) re-synchronized?
Expert:  david craig replied 11 months ago.

Hi Im David, the BCM will have to be programmed to your vin.

Customer: replied 11 months ago.
What all is involved with programming? How much does the dealer charge?
Customer: replied 11 months ago.
What all does the 'programming' do?
Customer: replied 11 months ago.
Are you sure this is a BCM issue?
Expert:  david craig replied 11 months ago.

have you had the vehicles modules interrogated by a diagnostic scan tool?

Customer: replied 11 months ago.
Expert:  david craig replied 11 months ago.

well then there is no way to confirm if the bcm is bad or if its the wiring to it. you will need to have it scanned for fault codes.