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Owners Manual_Europe_M52N75_en
6-3. Do-it-yourself maintenance 
computer.
●Performance may be affected in the  following situations. 
• Near a TV tower, electric power plant,  gas station, radio station, large dis-play, airport or other facility that gen- 
erates strong radio waves or electrical  noise.• When carrying a portable radio, cellu- 
lar phone, cordless phone or other  wireless communication device.
●When the vehicle is parked, the time taken for the warning to start or go off could be extended.
●When tire inflation pressure declines rapidly for example when a tire has  
burst, the not to able detect.
■Warning performance of the tire  pressure warning system 
The warning of the tire pressure warning  
system will change in accordance with  driving conditions. For this reason, the system may give a warning even if the  
tire pressure does not reach a low  enough level, or if the pressure is higher than the pressure that was adjusted to  
when the system was initialized.
When replacing tires or wheels, tire  
pressure warning valves and trans- 
mitters must also be installed. 
When new tire pressure warning  
valves and transmitters are  
installed, new ID codes must be  
registered in the tire pressure warn- 
ing computer and the tire pressure  
warning system must be initialized.  
Have tire pressure warning valves  
and transmitter ID codes regis- 
tered any authorized Toyota retailer  
or Toyota authorized repairer, or  
any reliable repairer. ( P.397)
■Replacing tires and wheels 
If the ID code of the tire pressure warn- ing valve and transmitter is not regis-tered, the tire pressure warning system  
will not work properly. After driving for  about 10 minutes, the tire pressure warning light blinks for 1 minute and  
stays on to indicate a system malfunc- tion.
Installing tire pressure warn- 
ing valves and transmitters
NOTICE
■Repairing or replacing tires,  
wheels, tire pressure warning  valves, transmitters and tire valve caps
●When removing or fitting the wheels, tires or the tire pressure warning valves and transmitters,  
contact any authorized Toyota  retailer or Toyota authorized repairer, or any reliable repairer as  
the tire pressure warning valves  and transmitters may be damaged if not handled correctly.
●Make sure to install the tire valve caps. If the tire valve caps are not  
installed, water could enter the tire  pressure warning valves, corrode the valve, and cause sticking and  
air leaks.
●When replacing tire valve caps, do 
not use tire valve caps other than  those specified. The cap may become stuck.