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0. Press and hold the auxiliary key release button on the underside of the key fob. Grab the looped end at the top of your key fob. Pull out the auxiliary key. Use the auxiliary key to unlock the driver's side door. Make sure the shifter is in the Park (P) or Neutral (N) position.
If the key fob is not working due to a glitch in the keyless entry system, it may be possible to restore the functionality by resetting the keyless entry system in your CX-5. There isn’t any button or option to reset the keyless entry system in CX-5, but you can reboot all the on-board computers by disconnecting the 12 volt battery for a few
Does the keyless entry system operate properly? Yes. Replace the transmitter (card key). Then go to the next step. No. Go to the next step. 5. Measure the voltage at the keyless control module terminals 3K, 3I and 3M while operating the request switch. Operate driver-side front door request switch (3K): 5.0 V→1.0 V or less Dead Remote Battery. The first simple reason the driver side door won’t unlock with remote is that your key fob or car remote is out of battery. After a long time of use, the key fob battery can be exhausted, usually from 3 to 4 years. Normally, your remote will respond or send a signal when you request it within a maximum distance of 15m. When small digital systems appeared in the 1980s, the car industry was quick to pick up and use them. In short order, Ford developed the first computer-controlled keypad door locking system in about 1980. A few years later, small radio transmitters were integrated with car electronics and key fob-controlled keyless car entry systems appeared. Here is an excerpt from pretty deep within the owner's manual, which should explain the behavior of the fob that was left in the car not working immediately: If a key is left in the vehicle, the functions of the key left in the vehicle are temporarily suspended to prevent theft of the vehicle. d4ZL1BH.
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