TST TPMS System TST-507-RV-4 - Can I Swap Cap Sensors For Internal Sensors

Updated 07/28/2026 | Published 10/24/2023

Products Featured in This Question

TST TPMS - Color Display - Signal Booster - 6 Internal Tire Sensors

(61)

$663.00

Internal Tire Sensor for TST TPMS Systems - Qty 1

(140)

$79.00

Question:

I purchased the TST-507-RV-4 system CAP SENSORS and would like to change to the in tireinch sensors. Can I just purchase the in-tire sensors and everything else will work?

asked by: John B

Expert Reply:

Yes, you can swap out your cap sensors for internal sensors and they will work with your current TST-507-RV-4 system. We offer the internal sensors individually with part # TST-507-INT-S1. Definitely a good idea if you don't want to have to worry about a sensor going missing. The internal batteries usually last at least 5 years.

expert reply by: Jesse M

Bill B.

7/11/2025

On the internal strap sensors TST-507-INT S1s, how can I determine the battery date code when looking at ones that have not yet been installed? I have some that have SL-6 and then a 4 digit number on the face of them, in this case the flur digit number after SL-6 is 4923. Is this where the week/year code is located on these, and does this mean the ones I am looking at were manufactured the 49th week of 2023? Or can the date of the batteries in them only be readable using the 507 monitor, once recognized by the monitor?

Jesse M.

7/14/2025

@BillB Hey Bill. Yes you are reading the date code on the internal sensors correctly. It is right on the front of the sensor next to the SL-6. I grabbed one from our warehouse and verified this.

Bill B.

7/14/2025

@JesseM Thank you. This makes me concerned that I am replacing functioning ones from 2020 along with my new tires, and the 4 I received from you all the other day all have date codes of 2021 (4921). The only reason I am replacing the old ones is due to concern that their battery life is near its end. It doesn't make sense to replace them with 4 that were manufactured in 2021. It is too bad they don't have either an on/off switch or like a lit of thing

Bill B.

7/14/2025

@JesseM Sorry accidentally hit send. That last sentence was supposed to be "like a lot of things have a thin film one can pull to activate the battery.