Greetings experts !
I need to replace the tires on my 2008 Grand Caravan, SXT, 17" wheels,
4 liter engine. 115° F is a typical summer day temperature. Winter
lows are to about 25°. A pretty severe climate (edge of the Mojave
Desert). Plan is to go with Michelin Defenders-90,000 mile tread. I
drive about 12,000/year.
The tire shop tells me I should replace the TPMS sensor unit if I plan
to keep the car for any length of time. Since I am only on my 3rd
Caravan, the first being a 1984, I guess I qualify. I trade at 10-13
Problem is, the tire shop wants quite a bit for the sensors.
The manager tells me if I get them myself, they will install them at
no extra cost.
I checked the internet Dodge parts dealers, who have substantially
lower prices. http://www.dodge-auto-parts-dealer.com/parts.htm
The problem is, I don't know how much has to be replaced.
The illustrated parts breakdown shows:
(First price is list price, second price is internet price)
1. To 1-22-07 Module low tire pressure, $46.70/37.36
1. From 1-23-07 Transponder, $51.45/41.16
2. Mounting bracket Left, $14.20/11.36
2. Mounting bracket Right, $9.10/7.28
3.Sensor Tire pressure, $72.25/57.80
3. TPMS sensor, $72.25/57.80
4. Hardware kit, $43.85/35.08
5. Cap, $12.70/10.16
Has anyone dealt with the TPMS sensor?
How much of this do I really need to replace?
Do I need 4 brackets, 4 hardware kits, & caps?
What differentiates "Transponder", "Module low tire pressure", and
"TMPS Sensor", or are they all the same thing depending on the model?
A different tire shop from the one I usually deal with tells me I only
need a rebuild kit that consists of a couple of gaskets. My research
tells me that the sensor batteries start going bad at 5 years, and
most fail at 7 years. Therefore, replacing them now makes sense.
Your assistance is greatly appreciated.
Thanks in advance.