TPMS-TIRE PRESSURE WARNING LIGHT ON WHEN COLD

Applicable Models

Some customers may complain of the TPMS (tire pressure warning system)  
lamp on for the first few miles (or minutes) driving when cold.         
The warning lamp usually goes out after driving a few miles. This may   
be caused by low air pressure when the tires are cold, or the tire      
pressure inflated when the wheels / tires are hot- 29-30 PSI.           
                                                                        
The TPMS light will illuminate when air pressure is:                    
* At or below 26 PSI                                                    
* At or above 51 PSI                                                    
                                                                        
Always inflate tires when they are cold. (If possible)                  
Tire pressure may drop several PSI when they cool down.                 
                                                                        
EXAMPLE- Tires that have 29-30 PSI hot may actually drop to 25-26 PSI   
when cold, which may illuminate the TPMS light. The tire pressure will  
increase after tires have been heated by driving, which should turn off 
the TPMS light when pressure has risen above 26 PSI.                    
                                                                        
1. Adjust tire pressure to specification when cold, or compensate       
   hot by setting pressure +3-4 PSI above specification.                
                                                                        
NOTE: Tire pressure guage readings are not always accurate. Actual tire 
pressure N temperature data can be viewed by using WDS DATA LOGGER      
-TPMS. Additional information can be seen in the TPMS service tips      
service bulletin. Bulletin # 02-002/03