Step 1: Overview of the Immobilizer System. Here’s an overview on how the immobilizer system works on older Toyota and Lexus vehicles. When you insert the key, a coil near the ignition ring picks up the RFID signal from your key and sends it to an amplifier. The amplifier then decrypts it and sends it to the ECU. There is an "Anti-theft protection active" message on my COMAND screen. When a COMAND unit is installed into a vehicle (whether during production or as a replacement) it is equipped with a PIN. This PIN will be associated to the VIN and relies on the communication network within the vehicle for validation. Yes. You can bypass the Ford Anti-Theft System. To bypass the PATS system, follow the following steps; Ensure all the doors are closed. Then turn off the ignition of the automobile. Insert the key into the ignition and turn to the “On” position. Press the power button three times and turn off the ignition. The 2012 Fiat 500: Safety and Security. Owners of the new 2012 Fiat 500 will enjoy a level of safety and security that is unheard of in its segment. There are more than 35 of these features available in the 500, that amount in a car costing $10,000 more than the 500 would be unusual, but Fiat has included them, most without additional cost. Hello Combwork. Having recently bought our first Multipla, with one remote key working, and one not, we also have the problem that if the alarm has been armed by the working key, it cannot be disarmed by the non-working key. The owners manual suggests that turning the key in the ignition to the 'MAR' position should turn the alarm off. Method 1 of 3: Check your key and cylinder Step 1: Check your key fob battery. A car’s anti-theft system may activate if your key fob battery is dead and hasn’t disabled the system. Make sure the battery is installed correctly in your key fob. If the battery is correctly installed, replace it with a fresh battery and try again. 1. Plug in your OBD2 Scanner to see what is causing the issue and what code. 2. Check the oil level first and clear the code with your OBD2 Scanner. 3. Replace the oil pressure switch. Get the BEST price OBD2 Scanner. Fiat 500 Low brake fluid / Parking brake dashboard warning light. Fiat 500 Low brake fluid / Parking brake dashboard warning light. Have her remove the key , wait one minute then reinsert the key and see if the anti theft will reset. If this does not work then the only other thing you could try is another key. If that does not work then your done, you will have to have a computer to hook up and retreive the failure codes to determine why the system has failed. Switch the ignition off. Check the fuel system for leaks. If no leak is apparent, reset the fuel pump shut-off switch by opening the access panel and pushing in on the reset button. Turn the ignition to the on position. Pause for a few seconds and return the ignition to the off position. Make a further check for leaks in the fuel system. Step 2 - Set up your secondary power source. If using a booster/jump pack; Find a stable location in the engine bay in which to site the jump pack where the leads can easily reach the battery terminals. Now clamp the crocodile clips of the booster pack over the leads that connect to the battery. Do not let the two crocodile clips touch each other! NMX7.