So my CX five will not lock with the key fob or the button on either front door. The light flashes when I hit the key fob but nothing else happens. The key fob and the door buttons will unlock the doors though. I can manually lock all the doors except rear hatch. Fuse is good. All doors/hood have been checked that they are closed. Any ideas on how I can fix this. 2016.5 Sport
Will not lock with key fob or interior button 2016.5 CX-5 Sport
- Thread starter ticker
- Start date
No other fob. With a fob it usually will lock/unlock real quick. In this case there is nothing happening.
- :
- Plano, Texas, USA
Are you saying you don’t have a second key fob? If you don’t, you’d better to get one, or it’d be very problematic if you ever lose the key fob, or if you have problems on the current one such as right now.
Try to put a new CR 2025 battery in your key fob and see if it works out for you.
No. Not saying that at all. Two fobs both unlock the doors. Neither locks the door. Same with the button on the inside of the door. Both driver and pass side button unlock but don’t lock. It’s not the fob because the physical button inside the car does not work either.
- :
- 2016.5 CX-5 GT AWD titanium/black 2016 Miata Club ST MT white
You say that the doors will not lock with the key fob or any of the door buttons? Including the outside and inside door buttons? Just for shyts and giggles try leaving the second fob in the car when you lock it. Use the driver's inside door button and see what happens.
If I leave a second fob in my car and lock the doors with either the inside door button, the outside door button, or the fob, I get a series of beeps (six I believe). The doors will not lock under these conditions EXCEPT if I use the inside door button. It still beeps but the doors lock and stay that way.
If I leave a second fob in my car and lock the doors with either the inside door button, the outside door button, or the fob, I get a series of beeps (six I believe). The doors will not lock under these conditions EXCEPT if I use the inside door button. It still beeps but the doors lock and stay that way.
The turn signals like they normally would. I think I may have narrowed it down to the BCM. It was really quiet and when I pressed the lock button on the door I could hear a faint click. I traced it back to the area where the BCM is. I unplugged one wire and the locks didn’t work at all. Plugged it back and the unlock was working again as before. Not sure the options on this. Looks easy to replace but the internet seems split over having to take it to dealer afterwards. The large black box is the rear BCM located above fuel door more or less.
I can manually lock the doors. It has to be the rear BCM. It’s the only thing that makes sense at this point. The BCM controls the auto locks among other things.
- :
- Plano, Texas, USA
Thanks for the update. RBCM usually got damaged when people are not careful replacing the trunk light with LED but the RBCM doesn’t have fuse protection. Mazda revised the circuitry and put in fuse protection to RBCM since 2016 CX-5. Hence it’s rare to see any reports on damaged RBCM on a 2016 CX-5. Of course your problem is different from those from 2015 CX-5 and prior.
- :
- 2015 Mazda CX-5 Touring FWD
Nice job. I imagine you probably saved a pretty large chunk of money by getting that fixed on your own instead of at a dealer.
Not sure what the cause as I have done nothing that would affect the electrical system. Hopefully it was just a faulty part.
