Question about 2007 Lincoln MKX AWD
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Posted on Jan 02, 2017
This is a issue with the trunk sensor which is a common issue on these cars I would disconnect it and it will stop or replace it and it will allow it to work properly. I will upload further steps in second message.
Posted on Dec 07, 2010
Hello, if your auto alarm system as been activated. This passive alarm system will shut down the fuel pump, ignition module, open the drive door and insert the Lincoln PAS key and turn it on. This will let the electronic identity the PASS key that you have inserted into ignition and will reset all the sensor to "operation mode" Sometimes the fuel shut off valve isn't recognized as one of the components in disabling you r Lincoln. Open the trunkpush the button down.... This will let the fuel flow to the engine. GB...stewbsion
Posted on Oct 24, 2011
First, Have your Battery tested. The Alarm systems in Ford made Products are very sensitive to Voltage. There are 3 systems in the car which interrupt power, the Alarm system (horn honking) and the Battery saver and finally the starter interlock system.
The Alarm system will do several things to disable the car from starting. It will reduce the voltage to the starter to prevent the engine from turning over. Some will even kill the ignition system so that if the starter is jumped, the car still won't start.
The Battery saver will disconnect any system to prevent discharge below a minimum threshold. Unfortunately, when the Alternator is working extra hard to charge a really bad battery: it will disconnect the charging circuit because it reads the Draw going to the Alternator to produce the power as a parasitic drain. Even at 70mph I have seen the charging disconnected and the vehicle coast to a stop when the electric runs out.
The last system worth mentioning is the Starter interlock. Under the dash and at the top of the Brake pedal lever is a switch. When you press the brake pedal, the switch allows the starter to crank provided the shifter is not in D or R. Drivers feet routinely hit this switch and either move it or break it. When it breaks it can short and drain the battery.
As you mentioned a Random problem, the Brake switch can shake to create a random problem if it is loose or broken. Your rear brake lights can be affected.
With the horn honking, at least part of your problem is the Alarm system. You can have a bad ignition switch too, which reads the keychip to disable the alarm. Your keychip may be bad and setting off the Alarm.
I had a new Lincoln myself which set off the Alarm randomly. I actually slept inside the car one night so I could turn off the alarm in the Apartment complex parking lot. Did'nt know if it would start again if the battery was disconnected and then reconnected. The Battery was shorted with less than 1000 miles on the car. It was a factory defective battery less than 3 months old.
But your car has many years and miles on it so it was worth mentioning the wear items. I hope my solution is helpful.
Posted on Sep 07, 2012
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