Try using "latex caulking" as potting material...less springy and easier removal.

Just an Idea that may not work

 

I considered using latex caulking but decided against it when I measured its electrical conductivity. It is somewhat conductive in the uncured state. Seems to become relatively non-conductive when cured. However, I was still concerned that residual conductivity might slowly drain the battery.

 

Yes, It's a rubber dip stuff in a long can. You re-dip your pliers and wrench handles to make them electrically insulated.

 

Great info. Thanks for posting this.

 

I put new batterys in my TPM monitors today using the information on this thread.

I did one thing different. Once I removed the potting material, I carefully lifted the battery and with a very slender screwdriver I was able to pry loose the metal straps from the battery. This left the straps attached to the circuit board.

I bought a product from www.frostfighter.com, mentioned earlier in this thread. This is an epoxy which contains silver so it will conduct electricity. Put a good dab of this on the bottom strap, which is the positive side, then place the battery positive side down on to the epoxy and strap. I let it set for about 3 hours. I then used the silver epoxy to attach the top strap, which is the negative side and let it set for about 3 hours.

Don't get sloppy with this epoxy because it can short out the battery.

Tested for volts at the soldered straps at the circuit board to make sure I had 3 volts. It checked out fine.

Bought PC7 at Home Depot, found it in plumbing department, and used it as a potting material to re-seal the sensor.

Also found the #9 O ring at Home Depot, in the plumbing section, for 23 cents each.

Bought the CR2477N batteries at www.batterystation.com for $4 each and had them in just a few days.

Once I find the thread to re-learn the sensors I will see if it all works out OK.

Not a hard job and spent about $ 70.

 

Yor would think that GM could have made a simple screw on/off backing to replace the batteries.

 

what????

are you crazy!


have a replaceable battery on the tire pressure sensors?

It makes more sense to make them non serviceable so that they can CHARGE us over $100.00 each for NEW ones!

 

Wow, great info here. Just replaced my rims and discovered my old sensors were actually still on the original rims...may play around with em

 

personally ill wait till i need new tires then mess with mine and see how good my soldering skills are.

 

What happens if the batteries go bad and you dont replace them or the sensor?

 

That Tire pressure sensor will no longer give you a pressure reading for that tire. You will see XXX for the reading.
It will also give you a service car soon message and a DIC message.

You will have to clear the message every time you start the car.

BC

 

the car will bitch at you............ as it already bitches enough!!!

 

First of all many thanks for this thread. Just finished replacing the first battery and was wondering about the PC7. Does it dry to a similar consistency to the original compound? In other words will it be as easy to remove? Is there a better solution than this (referring to the electrical insulation compound for tools) ?
TIA

 

Plasti-Dip...Thats the stuff you guys are referring to !

http://www.plastidip.com/home_solutions/Plasti_Dip

 

To make things easier for me, I used a Dremel tool with a small cutting ball and it takes out the potting material in no time. I was able to extract and replace all 4 batteries in under an hour. Just be careful.

 

The second battery posted that was sim. any luck with that?

 

If you're looking for a way to seal it without filling it with jb weld? I would impregnate or also known as saturating fiberglass cloth with jb weld then stretch it over the tpm sensor, and after it drys add another layer off jb weld over top and smooth it out with you're spit and you're index finger...... It works just make sure you're battery is soldered on correctly......

 

Why not just use some black RTV????????

Its sturdy, water proof, easily worked, cures easily and can be removed easily if necessary.

BC

 

any one ever try this on a C4 ?

 

Just thought I'd reopen this old thread as to what "potting" agent this stuff seems to be at least in my wifes Chrysler mini van. It appears to be alginot which is used for dental impressions.
BTW, great thread, I assumed non rebuildable wasnt to be fact, anyhting is rebuildable with enough time and knowledge.