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TPMS Wheel Sensors

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Old Feb 28, 2008 | 03:37 PM
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TPMS Wheel Sensors
Guys, I have a warranty question: TPMS wheel sensors...do they have embedded batteries or not? If so, are the batteries replaceable? I have a bad sensor in FR wheel...My warranty guy is saying they "don't cover batteries", and that the TPMS sensors have batteries in them.

thanks for any info you can share.
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Old Feb 28, 2008 | 04:27 PM
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The TPMS sensors should not have replaceable batteries. They are powered by a motion sensitive charging system. I would call them again and lean on them a bit.
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Old Feb 28, 2008 | 04:53 PM
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Originally Posted by DarkStar
Guys, I have a warranty question: TPMS wheel sensors...do they have embedded batteries or not? If so, are the batteries replaceable? I have a bad sensor in FR wheel...My warranty guy is saying they "don't cover batteries", and that the TPMS sensors have batteries in them.

thanks for any info you can share.

tech docs say embedded, max 7 year life. non replaceable.
depending on year and maybe country, can be 433mhz - Beru
or Siemens 315?mhz

ciao
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Old Feb 28, 2008 | 05:05 PM
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Originally Posted by DarkStar
Guys, I have a warranty question: TPMS wheel sensors...do they have embedded batteries or not? If so, are the batteries replaceable? I have a bad sensor in FR wheel...My warranty guy is saying they "don't cover batteries", and that the TPMS sensors have batteries in them.

thanks for any info you can share.
Mercedes Benz warranties cover batteries and TPMS wheel sensors.
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Old Feb 28, 2008 | 07:36 PM
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thanks for the info. i am actually using my mercury extended warranty. they say "we dont cover batteries". how would you interpret that? embedded batteries? should this sensor be covered?
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Old Feb 28, 2008 | 10:59 PM
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Originally Posted by DarkStar
thanks for the info. i am actually using my mercury extended warranty. they say "we dont cover batteries". how would you interpret that? embedded batteries? should this sensor be covered?
OK, That is the reason, most aftermarket warrantys do have exclusions, and more than one could apply to the TPMS. Batteries, tires, shocks, wiper blades, brake pads are usually not covered, and in the fine print "advanced electronics" are many times excluded.
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Old Feb 28, 2008 | 11:59 PM
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Originally Posted by dyno
tech docs say embedded, max 7 year life. non replaceable.
depending on year and maybe country, can be 433mhz - Beru
or Siemens 315?mhz

ciao
But here is the catch, it is a rechargeable battery that is built into the unit. So technically, a faulty battery is a faulty unit. There is also no way to say that it is the battery that has failed as it could aslo be the charging device or the electronics.
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Old Feb 29, 2008 | 12:18 AM
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When my car was under warranty they covered TPMS.
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Old Feb 29, 2008 | 03:31 AM
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If one wanted to buy a set of TPMS how much would they cost?
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Old Feb 29, 2008 | 07:27 AM
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Originally Posted by jpohl402
If one wanted to buy a set of TPMS how much would they cost?
If memory serves, the sensors are around $250 per corner.
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Old Feb 29, 2008 | 09:05 AM
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$1000 for a set? Wow.......
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Old Feb 29, 2008 | 11:26 AM
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Originally Posted by Blacksport350
But here is the catch, it is a rechargeable battery that is built into the unit. So technically, a faulty battery is a faulty unit. There is also no way to say that it is the battery that has failed as it could aslo be the charging device or the electronics.
YES, thanks. that's my point here, and the root of my issue. The sensors are expensive...and they don't have "replaceable" batteries, so in a sense they are an entire unit, battery and all.

BTW, I have the Mercury "Platinum" $0 deductable with an electronics "over-rider" meaning they are liable to cover electronics, but not including batteries, or wiper blades, brake pads, etc.

So I'll continue to battle with Mercury.

BTW, they did not cover the tranny valve body either because it did not throw a code!?

thanks for the responses here....
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