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For other services, please follow the on-screen instructions to operate.
On completion of the drive cycle, carry out the tire pressure monitor system test
application.
IMMO Service
An immobilizer is an anti-theft mechanism that prevents an automobile’s engine from
starting if the correct ignition key is not used or other device is present. This device
prevents thieves from starting the vehicle by a method known as hot wiring. Most new
vehicles have an immobilizer as standard equipment. An important advantage of this
system is that it doesn’t require the vehicle owner to activate it; it operates automatically.
An immobilizer is a more effective anti-theft protection than an audible alarm alone; many
auto insurance companies offer lower rates for vehicles that are equipped with them.
As an anti-theft device, an immobilizer disables one of the systems needed to start a
vehicle's engine, usually the fuel supply or the ignition. This is accomplished by radio
frequency identification between a transponder in the ignition key and a device called a
radio frequency reader in the steering column. When the key is placed in the ignition, the
transponder sends a signal with a unique identification code to the reader that relays it
to a receiver in the vehicle's computer control module. If the code is correct, the computer
allows the fuel supply and ignition systems to operate and start the vehicle. If the code is
incorrect or absent, the computer disables the system, and the vehicle will be unable to
start until the correct key is placed in the ignition.
The IMMO service of MK808 enables you to disable the lost vehicle keys and program a
replacement key fob. One or more replacement key fob can be programmed, depending
on your needs.
To program the replacement key fob(s)
1. Tap IMMO KEYS after entering the Service function from the MaxiCOM Job
Menu.
2. Tap Automatic Selection or Manual Selection to acquire vehicle VIN
information and tap Yes to confirm.
3. Tap Erase/Program all key fobs in the IMMO function list after it is displayed,
the list may vary for different vehicles being tested.
NOTE
To complete key fob programming, you need to acquire the Security Code, which
can be acquired through the Security Code Read function in hot functions.
Before programming, please check and erase the fault codes.
4. Read the on-screen information carefully and follow the instructions to complete
the operation.
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