tire sensors settup
Thread Starter
Safety Car
Joined: Sep 2008
Posts: 4,296
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From: Location: Location: kAnSaS
tire sensors settup
i swapped out my wheels, tires and new sensors. Expecting to see my low tire light come on and it didnt? i then drove around for awhile and looked at the DIC to view tire pressure. They all read around 30 (which is where i set them) now there is no way the car could "see" these new sensors without setting them up is there? Weird, i bought a sensor resset tool and will set them up after i figure out how this is working as it is. Any thots or input would be great. I shouldnt care, lol. paul
Race Director
Joined: Jan 2005
Posts: 10,924
Likes: 854
From: Daytona Beach FL
If you have one or two sensors fail (or replace one or two without using a tool to do a relearn), as soon as you start driving faster than 20 mph and the sensors start transmitting once per minute, you'll get DIC messages within a minute or two of starting to drive. The TPMS will get readings from the sensors that are working and registered, but it won't get readings from ones that are broken or not registered properly, so it will tell you very shortly after you start driving with "xx psi" for the sensors that are inop/not registered.
However, the TPMS can't imagine that all 4 sensors will fail at the same time. If you replace all 4 sensors without doing a relearn procedure with a tool to register them, the TPMS will take approximately one hour before it finally decides that the problem must be with the TPMS and it will give a DIC message of "Service Tire Monitor". BTW, the one hour must be approximately one solid hour of driving without shutting off the ignition.
When the car sits for more than 15 minutes the sensors go into the sleep mode and only transmit once per hour to save the internal batteries. The TPMS knows the last reported pressures, and when you start the car that's what it will display - until you drive faster than 20 mph and the sensors wake up and start sending new pressure info.
So.....you're reading the last known pressures and your TPMS is waiting to get new pressure reports from your sensors, but because they aren't registered the TPMS will never get new pressure info. If you drive for an hour you'll get the "Service Tire Monitor" message.
Bob
However, the TPMS can't imagine that all 4 sensors will fail at the same time. If you replace all 4 sensors without doing a relearn procedure with a tool to register them, the TPMS will take approximately one hour before it finally decides that the problem must be with the TPMS and it will give a DIC message of "Service Tire Monitor". BTW, the one hour must be approximately one solid hour of driving without shutting off the ignition.
When the car sits for more than 15 minutes the sensors go into the sleep mode and only transmit once per hour to save the internal batteries. The TPMS knows the last reported pressures, and when you start the car that's what it will display - until you drive faster than 20 mph and the sensors wake up and start sending new pressure info.
So.....you're reading the last known pressures and your TPMS is waiting to get new pressure reports from your sensors, but because they aren't registered the TPMS will never get new pressure info. If you drive for an hour you'll get the "Service Tire Monitor" message.
Bob
Last edited by BEZ06; Jun 20, 2009 at 10:38 AM.
