How to Disable an Intrusion Alarm in a Mondeo

Written by charles poole
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How to Disable an Intrusion Alarm in a Mondeo
Disable the Mondeo car alarm with the battery. (closeup of jump leads image by Katrina Miller from

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.

Skill level:

Things you need

  • Socket wrench

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  1. 1

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

  2. 2

    Look for the negative terminal labelled with "-".

  3. 3

    Loosen the negative terminal with a socket wrench.

  4. 4

    Disconnect the negative terminal from the Mondeo's battery.

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