Key fob is fine and has had many new batteries. It seems the sensor is tired of the Texas heat, in the morning the fob will open the doors no problem, but if the car sits undriven in the Texas heat for a couple of hours it doesn't work OR you have to place the fob ON the hood to get it to work....if your lucky
I think you might even have your car battery checked as it is the heart of all activity. Batteries can build up overnight and react differently in heat.
Along that line is the transmitter for your key-less, the mate to your FOB which needs and uses radio signals to operate. The heat may have gotten to the part inside your car. Heat messes with electric components and may drop the strength of the signal. This is what it sounds like happens if the FOB needs to be over the hood of your car to operate. The car part of the system does not have a strong enough signal to respond to the FOB. Could be a gap in the antenna in the responder.
SOURCE: how do i reprogram my02 ford focus remote locking key fob please.
get in your car close door hit the unlock button then put key in the ignition cycle the key from off to on (STOP BEFORE START POSITION) cycle key off to on 7 times after the 7th trime the doors should lock the unlock automatically that means u are in trainning mode hit the unlock button on key fob. the key fob should now work if it doesn't then try changing batt
SOURCE: problem with ford explorer alarm imobiliser
You should have a switch under the dash and then just turn it to the off position. If you don't or it doesn't work (like mine) then, there is 2 fuses under the dash, put the key in the ignition and turn it forward, pull one of the fuses out and then start the car that should reset it. Then you should be able to put the fuse back. Sometimes if you put the fuse back before starting it the alarm will just continue to try and reset itself, but not start the car. If that doesn't work I have a mechanic who can pull the whole alarm out and when hes done it would look like nothing has ever been installed. Hes very good. I ended having him take my alarm out when I had the same incident happen after the 2nd time.
SOURCE: 1999 focus key fob doesnt work changed battery and
turn key on and off eight to ten times and door locks should lock then unlock
push and button on keyfob
SOURCE: Combination on car keypad does not open doors
Does the key pad on the door light up? Are there any tears in the key pad numbers? Does the key pad lock the doors?.
There are no fuses directly for the pad.. The key pad is linked directly to the RAP. module. If the locks work from the FOB the fuses for the Module are good. Chances are the pad is no good especially if it don't light up. The RAP module is above the driver side foot well, directly above the accelerator pedal . Hope this helps.
SOURCE: Keys and Keyfob do not open 2001 explorer from outside
Spray some WD-40 into the key cylinders and then try working the key. The locks seize up because you keep using the FOBs.
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