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How to Disable an Intrusion Alarm in a Mondeo

Updated February 21, 2017

In the intrusion alarm in your four-door Mondeo is used to deter auto-theft. However, disconnecting it from the battery can disable the intrusion alarm. The car alarm is wired into the negative terminal connected to your Mondeo's battery. You don't have to be a car mechanic to disconnect your battery terminal. You can easily perform this task with a few tools found around your home. After the terminal is disconnected you will not have to worry about your alarm going off.

Pop the bonnet to the Mondeo and locate the battery to the right side of the engine.

Look for the negative terminal labelled with "-".

Loosen the negative terminal with a socket wrench.

Disconnect the negative terminal from the Mondeo's battery.

Things You'll Need

  • Socket wrench
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About the Author

Charles Poole holds a Bachelor of Arts in creative writing from Appalachian State University. He started freelancing in college for local publications in Boone, N.C. and is continuing his career through online freelancing with a specialization in affiliate marketing, blogging and SEO.