External temp. Display & Trip Computer

[bung206]

What about the odometer milage? If you change it to one that has lower miles travelled will it still stay the same? Or is the miles travelled data stored elsewhere also, and updated into the instrument cluster upon first power on?

[CTScott]

Originally Posted by bung206

What about the odometer milage? If you change it to one that has lower miles travelled will it still stay the same? Or is the miles travelled data stored elsewhere also, and updated into the instrument cluster upon first power on?

The mileage is stored only in the cluster, so when you swap it the mileage will be wrong. Toyota Dealers can not change the odometer (and here in the states if you replace the cluster with one with different mileage a sticker is placed on the car near the VIN tag and the fact that the mileage is different than what reads has to be reported to the motor vehicle department). The mileage is reprogrammable with some special tools and knowledge of the checksumming of the data. I actually figured out how to do so and can reprogram the cluster mileage.