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Mazda MX-5 Miata Electrical Problems



  • ateixeiraateixeira Posts: 72,587
    Great, hope that fix holds up. :shades:
  • kgtaroukgtarou Posts: 2
    I did the same thing. Blew out my main fuse. Replaced it and am having some of the same issues (dead radio, dead dome light, trip odometers reset to zero after turning the engine off, cruise control not working)

    Was wondering if you ever resolved your problem
  • terceltomterceltom Posts: 1,022
    Picked up a “91” Miata MX-5 (49,000 miles) the other day for my wife for Christmas. Great condition, with one exception; previous owner had battery problems. I can see he had a new battery in it now, but it’s a wet cell replacement that the Mazda dealers are now putting in and not a gel AGM battery. I believe the alarm system is partly, if not solely, to blame for this battery drain problem. I would like to disable or remove this alarm totally to eliminate this possibility before I buy a Westco. Miata battery. The alarm whines, beeps and screams even when I’m trying to just jump the car. I’m guessing it’s an OEM alarm system but I could be wrong. It has little black on/off switch directly under the steering column but that doesn’t seem to do anything. I only have an entrance key for this car and no key fobs. I’m hesitant to do anything without knowing if this alarm is an engine immobilizer also. Any help on how to operate, disable or remove this alarm would be greatly appreciated.
  • I have a friend that bought one of these cars,MX5,along with it came some electrical problems, I have straightened them all out except for one,,no turn signals or E flashers,,could someone tell me where the flasher unit is located ? or what it looks like ?,,,,,,,,,,,
  • njmx5njmx5 Posts: 1
    i have a 2000 mazda miata, i had just put in a new battery in the car in Feb. 2011 and now my car has completely died electrical wise. i tried jumping it, and it worked after 20 minutes of turning the key. i stalled it out when it finally started with my excitement and i could not jump it back up again. it initially stalled out in the middle of trying to shift into 2nd and all the power went out and the last thing to go off was my engine, has this problem ever occurred for anyone?
  • terceltomterceltom Posts: 1,022
    I would have the alternator checked first to be sure the battery is getting a charge.
  • dubie3dubie3 Posts: 1
    The car has died. No electrical working except the lights. I replaced the battery $110.00 and was no help. Still no electrical working. Could it be the 80A main fuse??. Any help appreciated. :cry:
  • What did you have to do to correct the problem...I think I did the same thing in hurry. Can you suggest a fix?
  • kgtaroukgtarou Posts: 2
    It's been a while, but I'm pretty sure that it was multiple burnt-out fuses. Make sure you check ALL of them.
  • I have a 2012 Mazda Miata which suddenly developed an alarm problem. The green lights on the dash start flashing and horns beep when I try to open the driver's side door. Close the door, start the car and after a bit the horns and lights stop. I climb out of the car (thank goodness it is not raining) but I need a solution. Brought it to the local dealership and they had never encountered such a problem. I am going there tomorrow morning. Any one have any ideas on what it could be?? At one point the key symbol showed on the dash.
  • Lately when I switch my 1990 Miata headlights from low to high beams, there is a momentary outage. Could this be the relay?? Ricksford
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