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has learned the sensor identifications and positions.
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 MX808 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
MaxiCheck 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
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