IS350 2006: do I need to change batteries in tire pressure sensors? - Lexus IS Forum
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post #1 of 5 (permalink) Old 01-25-2013, 10:30 AM Thread Starter
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IS350 2006: do I need to change batteries in tire pressure sensors?

Last time I changed tires in a bigger shop. They told me they checked the batteries in the tire pressure sensors. They said that if the battery dies, I need to unmount the tire, a lot of work.

Now I need to change tires again, I ordered the replacement online and will do this in some small shop. Such shop would likely not know about the battery issue at all.

How do I know if batteries need replacement? Is there such indicator on the dashboard?
How long does the battery last? My car is 6.5 yrs/100K miles now. What is the recommended period of time before replacement?
What type of batteries does it take?
Should I just replace them anyway because it is 7years/100K miles?
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post #2 of 5 (permalink) Old 01-25-2013, 12:08 PM
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Batteries are not replaceable. You will need new sensors. The only way of knowing when they are bad is when the low tire light starts flashing and I will say check system on the cluster. Some tire shops have equipment to register sensors to the ECU.

Wrong section btw.

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post #3 of 5 (permalink) Old 01-25-2013, 02:18 PM Thread Starter
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Originally Posted by Solid_Snake View Post
Batteries are not replaceable. You will need new sensors. The only way of knowing when they are bad is when the low tire light starts flashing and I will say check system on the cluster. Some tire shops have equipment to register sensors to the ECU.
But low tire is just a *written* warning signal on the dashboard plus the general red light indicating some warning is present. Are you sure there will be any flashing? It might just say "LOW TIRE BATTERY" or something like that.

How long do batteries normally last?
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Re: IS350 2006: do I need to change batteries in tire pressure sensors?

If the battery in one sensor is bad, the sensor will not work. On some tpms scanners it will display the battery strength, if they used one and claimed the sensor needs replacing, the idiot light should be on. If the battery signal is low, it would more cost effective to replace them with the new tires. most car manufacturers started using direct tpms in 2004, but it became standard in 2007. I have rarely seen battery failure in tpms sensors and its 2013 now.

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post #5 of 5 (permalink) Old 01-25-2013, 04:49 PM
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Quote:
Originally Posted by jerrry94087 View Post
But low tire is just a *written* warning signal on the dashboard plus the general red light indicating some warning is present. Are you sure there will be any flashing? It might just say "LOW TIRE BATTERY" or something like that.

How long do batteries normally last?
The low tire light will flash and on the little screen in the cluster will say "(!) Check System".

Like IS_TRD said I've seen cars from 2003 and the factory TPMS sensors are still working.

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