The keyless entry system in my 2002.5 P5 stopped working recently and I'm trying to troubleshoot it. Here are the symptoms: 1. All power lock buttons work correctly, and all the locks respond correctly. 2. The remotes do not lock, unlock, or activate the panic feature. 3. There are no audible clicks in the car when I press the remote buttons. MX-5 Miata Forum. MX-5 Miata . Miata Advanced / Smart Key Replacement. Thread starter Matchu_Peechu; Start date Save up to $4,329 on one of 1,350 used 2021 Mazda MX-5 Miatas near you. Find your perfect car with Edmunds expert reviews, car comparisons, and pricing tools. Keyless Entry/Start; Upgraded 2016 Mx-5. The advanced keyless entry is not working. I changed the fob battery but need to hold the fob to the start button. The fob buttons unlock the doors etc. the red key indicator on the dash stays lit. Mechanic's Assistant: Have you checked the fuses? The dashboard bulbs? What fuse controls the keyless entry But the remote key can also stop working due to worn buttons, poor battery contact, water damage, defective key fob, receiver module issues, signal interference, dead 12 volt battery, and unpaired key requiring reprogramming. 1. Dead battery in key fob. Dead battery is the leading cause of key fob not working in Elantra. One Mazda MX-5 , RX-8 Smart Keyless Entry Remote with Trunk Release - brand new with uncut emergency insert key included. Genuine, original OEM (factory Mazda) remote. Same as the remote you can purchase at your local Mazda dealership. VCqBP.