714is300

So these TPMS can get quite expensive, cheapest for a set I found was $50. I've seen on youtube where you can replace the CR2450 battery with solder tabs. Is it almost always the battery that goes out or should I replace the whole unit? I bought the car with 74K miles and it has always been on. Also, would a OBD2 scan be able to tell me exactly which sensor is out?

stilande

Hi,
It is most probable the battery. And very likely soon all 4 sensors. Changing the battery can be done, I've changed 4 batteries to my sensors and they are all fine now. Before that I bought some cheap sensors to replace the original ones, but they were unreliable: most of the time the car was able to read them right, but sometimes it failed (causing 'Check System' messages on dash).

Using the TechStream, you can find out which sensors are bad. But it only tells you the ID of the sensor, not the location. The same ID is printed on the sensor. A generic OBD2 scanner probably does not tell any details... but the tire shops have handheld scanners to check/read the sensors even inside tires.

BR.Sami

verly6565

defiantly battery

ibidu1

iTrader: (1)

You can just buy denso brand off of rockauto.com for $33 each and take to most tire shop and have them install and program it for you.

714is300

thank you. I will be ordering the battery then

714is300

Thanks. I'll replace the battery since it'll save me lots. My tire pressures are always good but just my OCD of seeing a yellow indicator light on dash bothers me haha

ibidu1

iTrader: (1)

The process is not as easy as it sounds. If you have the tools and skills to do properly do it, go for it! If you don't more likely end up costing you more money, plus in time and headache. Costing at $33 each for denso (aka oem brand)

If you do not properly swap out the battery then you will have to pay to remove the sensors and redo everything. Unless if you have a tire bead breaker, if you do then you can easily swap them anytime at home. But to pay a shop $15-25 bucks per wheel, thats a risk. Ive opened tpms sensors before, that silicone is tough its time consuming.

714is300

ya u know what, I'm not going to mess with it. I'll just ignore the yellow indicator on dash for the tpms