I’m looking for technical help or recommendations on: Central Locking Faults
Hello folks, just popped out in the MX5 this morning and discovered the drivers door lock is completely unresponsive to the remote central locking via the key. Previously it has been a bit temperamental, today it failed to lock and unlock every time. I have to manually lock it with the key.
Are there any DIY fixes for this? Will the dealership know how to repair this at a reasonable price?
A very common fault, and strangely mostly on the drivers side.
A new door lock is about £150. No doubt double that from the main dealers, and go with a spare arm for them to rip one off.
A used door lock on eBay about £50.
Or potentially a new motor for about £10.
I collected tons of info recently.
Mx5 city have a new on on offer for £119, but expect carriage to London.
I have fitted 2 second hand units to the drivers side in the last few days and neither worked so I’m wondering if there is something else going on, anyone got any ideas ?
@Gunner1
Do you get any movement out of the internal handle, or what you can do, is take the motor off the linkages etc, and connect this to the car, does the little arm move at all. ?
The actuator i have recently fitted appears to work intermittently which is annoying, so i am wondering if it is not the actuator but something else in the system or is it that i have had 2 iffy units and need to buy new. Not sure i want to flush a large amount of cash for it not to work
It will be back once the sun comes back. when the mechanism gets warm the actuator stops working. I disassembled mine once upon a time and resoldered/ greased the joints I could find and all worked (car sold a year later)
2014 NC much the same thing - door locks fine manually with the key but no longer responding to Remote. Boot is fine so presumably battery is too. Any known fixes since last reviewed above? And how fiddly is access to this unit in the door?
It’s not overly difficult if you’re handy. Door card off, takes 10 minutes. Internal door card off, another 10 minutes. A few screws holding the lock, a few levers inside the door, and an anti theft plate covering the key hole. At most maybe 30 to 40 minutes to remove the lock. It will take longer to refit though, the metal plate covering the key hole is a pig to fit right. It will probably take a few attempts to fit it correctly. If you get it wrong, then it fouls the external door handle, so check that works before you put the cards back on.
Regards the lock, a new lock is about £120, a used one around £30, or the small internal motor around a tenner. (From china)
I also found that the same motor assembly is fitted to the rx8 and Mazda 6.
If you get stuck finding one for an mx5 then search for
A92-SPL-R (or -L depending on side)
