Tire Pressure Monitoring System

John Cody Forbes cody at 5000tq.com
Mon Oct 23 18:21:12 EDT 2006

Scott Phillips wrote:
> Guys,
> There are two different types of monitoring, direct and indirect
> (direct is for dealer add-on's) indirect is a computation thru the
> car's ABS (Correct Brett), it calculates the rotational difference
> and light up the light of the wheel that falls out of "spec" as a low
> pressure wheel spins at a different rate than a properly inflated one.
> The direct monitoring type, you would see a pressure transmitter
> around the valve stem on the car now, if it's not there then you have
> indirect monitoring. If you do have direct monitoring, you should be
> able to "disable" it via VAG-COM should you choose to install
> different wheels.
> Scott

The '06 S4 I work on (boss' wifes car) has transmitters INSIDE the tire
mounted to the wheel. We bought a handheld device for checking thier
operation and calibration and found that they transmit a good 4ft.

I'd bet all the newer Audi's do it that way.

-Cody Forbes
'86 5k noT noQ
'86 5k noT noQ - Parting Out
'87 5ktq
'87 5ktq - Fast. Really Fast.

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