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C6 TPMS battery replacement

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Old 05-11-2011, 09:04 PM   #1
KENS80V
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Default C6 TPMS battery replacement

Here's a few pictures of the C6 (European market) Corvette tire pressure sensors with the battery exposed. North American C6 Corvette sensors are identical although they transmit at a lower frequency.The battery is the same diameter as the C5 sensor battery but it's thinner. The model number is RENATA CR2450N. It is a 3volt Lithium battery. http://www.renata.com/pdf/3vlithium/DBCR2450N.04.pdf

The steps taken to replace the battery is documented here http://forums.corvetteforum.com/c5-t...-tutorial.html Watch the "You Tube" video to see if it's something you might want to try. The batteries are about $5 each.

The C6 battery has a rated output/capacity of 540mah while the C5 battery is 1000mah. Order the batteries with a "PC Mount" configuration. If they aren't available with the legs spot welded on (pc mount) then apparently some battery vendors can add the legs for you at their store.

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Last edited by KENS80V; 06-16-2011 at 05:59 PM.
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Old 05-11-2011, 09:41 PM   #2
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thanks man! you just saved me over 100 bucks on two new sensors!! my left front keeps going to 0 randomly.

now it does suck needing to demount and remount the tires. $$$ any tip for that?
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Old 05-11-2011, 10:01 PM   #3
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Sweet
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Old 06-16-2011, 01:09 PM   #4
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Originally Posted by carlrx7 View Post
thanks man! you just saved me over 100 bucks on two new sensors!! my left front keeps going to 0 randomly.

now it does suck needing to demount and remount the tires. $$$ any tip for that?
No need to do that...you can just break the bead at the place where the sensor is, reach in and remove it without taking off the tire. No mounting, no balancing.
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Old 06-16-2011, 03:23 PM   #5
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WOW! EXCELLENT WRITE UP!
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Old 06-16-2011, 03:37 PM   #6
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It will be a fun project....
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Old 06-16-2011, 04:16 PM   #7
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2450 is a standard lithium battery...you just need to get the ones with the contacts welded on.

That would be called a "PC Mount" battery.

This sensor is red or orange though, I think the current sensors are gray, so it probably would be best not to buy a new battery until it is determined which battery is inside the current sensor.

BEZ06 needs to chime in here.

Last edited by cclive; 06-16-2011 at 04:24 PM.
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Old 06-16-2011, 05:02 PM   #8
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Quote:
Originally Posted by cclive View Post
No need to do that...you can just break the bead at the place where the sensor is, reach in and remove it without taking off the tire. No mounting, no balancing.


you are the man!!
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Old 06-16-2011, 05:54 PM   #9
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Quote:
Originally Posted by cclive View Post
2450 is a standard lithium battery...you just need to get the ones with the contacts welded on.

That would be called a "PC Mount" battery.

This sensor is red or orange though, I think the current sensors are gray, so it probably would be best not to buy a new battery until it is determined which battery is inside the current sensor.

BEZ06 needs to chime in here.
The sensors that I show in the pictures are the C6 Corvette sensors for the European market. They transmit at a higher frequency. That is the only difference.
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Old 06-10-2012, 07:38 PM   #10
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Here are the new batteries and the rest of the installation. The link to purchasing the batteries $2.00 each http://ca.mouser.com/Search/ProductD...4-CR2450NFV-LF

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Battery contacts soldered. Hot melt glue holds the battery in place.
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Right Stuff used to fill in the void. Potting compound would be better.
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Last edited by KENS80V; 06-10-2012 at 07:53 PM.
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Old 06-09-2013, 02:53 PM   #11
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Should we perform the sensor learn procedure after this battery replacement ?
Should we replace the sensor grommet sealing ? If so, where can we buy?
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Old 06-09-2013, 03:06 PM   #12
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Quote:
Originally Posted by cclive View Post
No need to do that...you can just break the bead at the place where the sensor is, reach in and remove it without taking off the tire. No mounting, no balancing.
Not calling you out, but have you actually done that?

There have been several people posting that just breaking the bead will work on normal-profile non-runflats, but the stiff bead and sidewall of the low-profile C6 runflats makes it very difficult or impossible.

When I needed to change a sensor on our 2009 (Michelin PS2 ZP runflats), a pretty sharp Discount Tires shop in our area said they would not try the "easy" way, they just dismounted the tire (or maybe the bead on only one side) for the swap.

"Enquiring Minds Want to Know!"

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Old 06-09-2013, 03:06 PM   #13
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If you reapply the sensor to the same wheel position I don't think that would be necessary.

The grommet seals should be replaced for peace of mind.
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Old 06-09-2013, 03:23 PM   #14
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Quote:
Originally Posted by Gearhead Jim View Post
Not calling you out, but have you actually done that?

There have been several people posting that just breaking the bead will work on normal-profile non-runflats, but the stiff bead and sidewall of the low-profile C6 runflats makes it very difficult or impossible.

When I needed to change a sensor on our 2009 (Michelin PS2 ZP runflats), a pretty sharp Discount Tires shop in our area said they would not try the "easy" way, they just dismounted the tire (or maybe the bead on only one side) for the swap.

"Enquiring Minds Want to Know!"

There have been many reports here on the forum that you can simply break the bead and remove/replace the sensor without totally removing the tire from the wheel.

Take a look at this thread:

http://forums.corvetteforum.com/c6-t...post1578430096

Scroll down to and you'll see this picture:




I don't believe that is a runflat, but the power of a tire machine can easily push down a runflat tire just as much as you see in that picture.

The manager at my local Discount Tire has a Z06, and he says it is no problem for their machine to push down the bead of a runflat enough to reach in there just like in the picture above.

Bob
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Old 06-09-2013, 03:35 PM   #15
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Thanks.
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Old 06-09-2013, 04:43 PM   #16
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Quote:
Originally Posted by BEZ06 View Post
There have been many reports here on the forum that you can simply break the bead and remove/replace the sensor without totally removing the tire from the wheel.

Take a look at this thread:

http://forums.corvetteforum.com/c6-t...post1578430096

Scroll down to and you'll see this picture:




I don't believe that is a runflat, but the power of a tire machine can easily push down a runflat tire just as much as you see in that picture.

The manager at my local Discount Tire has a Z06, and he says it is no problem for their machine to push down the bead of a runflat enough to reach in there just like in the picture above.

Bob
That is one of many reasons we make machines to make our life easier.

Machines feel no pain.

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By the way Bob, Coast Guard Rescue Swimmer made a rescue here yesterday on one capsized boat.

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Old 06-09-2013, 05:07 PM   #17
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Quote:
Originally Posted by victorf View Post
....By the way Bob, Coast Guard Rescue Swimmer made a rescue here yesterday on one capsized boat.

Excellent!!

A big "Semper Paratus" salute to that Rescue Swimmer!!!



Quote:
Originally Posted by cclive View Post
....This sensor is red or orange though, I think the current sensors are gray, so it probably would be best not to buy a new battery until it is determined which battery is inside the current sensor....
Yes, Chris - that's an ORANGE sensor for a Euro spec C6:

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I know that at least the 2005-2009 C6 Vettes that were built for delivery in Europe had a different TPMS computer in the car than the ones built for the U.S./Canada market.

All domestic Vettes (2005-2013) use sensors that transmit their signal to the TPMS on 315 mHz.

At least the 2005-2009 Euro spec Vettes used that orange sensor, and it transmits on 433.95 mHz. I don't know what the Euro spec Vettes built in 2010 or later use.

The gray sensor used in 2005-2009 domestic Vettes is gray with part# 25758220.

The last digit of those orange sensors is different: 25758221

I imagine they all use the same battery.

Bob
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Old 06-09-2013, 07:01 PM   #18
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The sensors keep dropping in price. I guess I am getting lazy, I think I will get new ones when they don't work anymore.
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Old 06-09-2013, 07:57 PM   #19
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The sensors keep dropping in price. I guess I am getting lazy, I think I will get new ones when they don't work anymore.
To much hassle so I'll by new also.
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Old 06-10-2013, 02:13 PM   #20
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Quote:
Originally Posted by saplumr View Post
To much hassle so I'll by new also.


I just recently left the tire industry after 10 yrs, but it takes 20 minutes or less to install all 4 new sensors on run-flats. I've done tons of Vettes over the years.

Sensors run between $45-$120 each. And some places charge for Mount/Dismount/Balance. Even just breaking the bead can knock the balance off.

If you have the time to bring your wheels up, dismount or break the bead (which still isn't 100% balanced afterwards), take the sensors home, rebuild with new battery, bring wheels & sensors back for install, and then take them back home to install on the car then this is a great option.

So, is the little money saved or the hassle more worth it?
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