2001, 740il, 97K miles.

Today I got the following message from my car:

"TIRE CONTROL INACTIVE"

What does that mean ?
Do I have to go to the stealer?, Can I fix it myself?,
Could I still drive the car?

Any help or a tip on the right direction greatly appreciated .

check p.99 of your owner's manual :)

I don't have this error message, but I'm curious as to what I can expect of my car. So I have to ask, what is on p99 of the 2001 owners manual, cause my 98 owners manual as info on the catalytic converter and "using the car radio"...

Tire Pressure Control (RDC)*
Flat tire
If there is a tire failure with a loss of air pressure, the message "TIRE DEFECT" appears in the Check Control. In addition, a gong sounds. If this occurs, reduce vehicle speed immediately and stop the vehicle in a safe location. Avoid hard brake applications. Do not oversteer. Replace the wheel and flat tire. The spare tire which is available in your vehicle as standard equipment is equipped with the electronics required for RDC and, following activation of the system, is also monitored after it is mounted.
< The RDC cannot alert you to severe and sudden tire damage caused by external factors.< Have the tires changed by your BMW center.
Your BMW center has been trained to work with the RDC system and is equipped with the necessary special tools to do so.<

System interference
During the period of the malfunction,the message "TIRE CONTROL INACTIVE" appears in the Check Control. You will also see the same message > in the event of a system fault
> if a wheel is mounted without the RDC electronics
> if, in addition to the spare tire, additional wheels with RDC electronics are on board.

Please contact your BMW center for
additional information.