Not sure if this will work, but try this:
Open your car from the driverside door, if the alarm starts flashing, go to the passengerside door and use the key to unlock it. That should reset your factory alarm. GL
SOURCE: porsche key fob
If the key had gone faulty, the key code must be re programmed on the vehicle computer. This can be done only using a PIWIS tool, available at the dealer or at a qualified Porche garage.
Try also the following reset:
turn ignition on,
turn off.
remove
the transponder from the column
push any button on the fob within 6
seconds.
This procedure will reset the key synchronizing again with the vehicle computer.
SOURCE: key fob will not undo
If you don't have one that works for the vehicle now, you'll have to take it to your local dealer to have it programmed to the vehicle. Some will charge for this, some will do it at no charge.
If you do have a remote that is programmed and working for the vehicle, then the following steps will allow you to program another remote:
1. Enter vehicle and close all doors.
2. Put seatbelt on (or clip it into the buckle) to shut the warning buzzer off.
3. Put key in ignition, turn to run position but don't start it.
4. Press and hold the unlock button on the working key fob and hold for 4 seconds, then also press the panic button.
5. Release both buttons and you should hear a single chime to indicate it is in program mode. You have 30 seconds after the chime to program any additional remotes you want to program.
6. Press and release both the unlock and lock buttons simultaneously on the remote you are programming. You should hear another single chime.
7. Within 4 seconds after hearing the chime, press either lock or unlock button on remote that you are programming.
SOURCE: 2005 dodge durango key fob
Hello and thank you for choosing fixya.com. I would suggest taking your vehicle to a local auto parts store and request to have a diagnosis done. (while auto stores vary, this is usually a free service and only takes a couple minutes to complete) to see if any codes are brought up. If so, the representative can tell you what the codes mean, and what needs replaced or repaired. Let them know of the situation. Even if no codes show up, ask them to clear the codes. If this does not work, do the following. 1: make sure that the batter in your key fob is inserted correctly, and that it is the correct size and type. 2. Disconnect the + Positive cable on your battery. This will reset your the vehicles computer. Maybe this will allow the vechile to code up with the fob. If not, I would take it to dealership, or backto an auto part store for further assitance.
I thank greatly for choosing fixya.com. I hope this information is useful to you and helps you get your fob working again. Let me know if you need further assistance, or have any questions or comments. Feel free to rate this information at your earliest convenience.
SOURCE: key fob not working after battery change ford focus 2006
Try reprogramming it.
1. Turn the ignition from OFF to RUN 4 times within 6 seconds.
2. Turn the ignition OFF. The system will chime to confirm programming mode.
3. Within 20 seconds, press any button on first keyless remote.
The system will chime once to confirm programming.
4. Within 20 seconds, press any button on second keyless remote.
System will chime once to confirm programming.
5. Turn ignition to RUN to exit programming mode.
SOURCE: Audi A4 2003 Alarm Problem
There is a few things to do check the door switches that control dome lights, check wire down by the skid plate when you get oil changed there is a sensor for the starter there if it is stolen the alarm will go off or just take a BAT and BEAT the living **** out of your horn and call it good like I am going to. I hope this helped or will help I recommend an aluminum bat vrs. wood
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