TPMS battery life
Thread Starter
Race Director
Joined: Sep 2007
Posts: 16,557
Likes: 2,108
From: Peoria/Phoenix AZ
C6 of Year Finalist (performance mods) 2019
TPMS battery life
After several searches I've found the following generally accepted information.
Owner's Manual states battery life is 10 years.
Sensors go into sleep mode at time of manufacture.
Information is transmitted once per hour in sleep mode.
Sleep mode resets 15 minutes after activity ceases.
From sleep mode the car must first reach 15 MPH to switch to active mode.
Information is transmitted once per minute in active mode.
Obviously, mileage has no direct relationship to the battery life, other than a number GM picked along with an average speed to determine signal transmissions.
How the car is used, is a better indication of the time expected before the sensors need to be replaced.
I'd be far more interested to know the estimated number of signal transmissions before a battery failure. Knowing the way I use my car, it would help me decide which time I replace the tires to also replace all the sensors.
Owner's Manual states battery life is 10 years.
Sensors go into sleep mode at time of manufacture.
Information is transmitted once per hour in sleep mode.
Sleep mode resets 15 minutes after activity ceases.
From sleep mode the car must first reach 15 MPH to switch to active mode.
Information is transmitted once per minute in active mode.
Obviously, mileage has no direct relationship to the battery life, other than a number GM picked along with an average speed to determine signal transmissions.
How the car is used, is a better indication of the time expected before the sensors need to be replaced.
I'd be far more interested to know the estimated number of signal transmissions before a battery failure. Knowing the way I use my car, it would help me decide which time I replace the tires to also replace all the sensors.
Thread Starter
Race Director
Joined: Sep 2007
Posts: 16,557
Likes: 2,108
From: Peoria/Phoenix AZ
C6 of Year Finalist (performance mods) 2019
Your case is exactly why I asked the question. 12 years, but only 65K on the clock. My '08 already has 83K miles and one of the sensors has already flashed the DIC a couple of times. It reset itself on the next start cycle, but I'm curious how much longer before it and any other ones completely die.
