TPMS Sensor Info for Subaru Outbacks - Subaru Outback - Subaru Outback Forums
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post #1 of 16 (permalink) Old 10-11-2018, 07:18 PM Thread Starter
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TPMS Sensor Info for Subaru Outbacks

Anyone with better information please let me know and I'll get it corrected.

TPMS History:

In the 1990s Firestone tires blew up on Ford Explorers. After a public back and forth the powers that be agreed to mandate tire pressure monitoring system on future vehicles. The law went into effect on 9/1/2007 and all vehicles sold in the US since have had some sort of Tire Pressure Monitoring System, or TPMS.

TPMS Function:

What this system does is use sensors in the tire to measure the tire pressure. When the pressure in the tire gets below a certain threshold (27 PSI) a warning light comes on on the dash warning of potential hazards from low tire pressure. The newer (2018+) systems have the capability to individually read each tire's pressure from the dashboard.

TPMS Components:

Subaru has used two types that I'm aware of:

2008-2017 Model Years used a 315 mhz system.

2018-2019 Model Years uses a 433 mhz system.

A user could take the 315 mhz sensors from compatible years and program them into the car computer and have it function fine.

The only issue with doing this is the if you swap wheels they will have to be relearned into the car.

I used the Schrader Red Sensors on my 2017 to clone the 315 mhz system. I can now swap the wheels on the car without relearning.

I have been told the Schrader EZ Sensor will also function the same but do not have first hand experience doing so.

For the 433 mhz system Schrader 33700 EZ Sensors will clone, according to @DugsSin

@Fibber2 Any input?

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Last edited by Brucey; 10-24-2018 at 12:28 PM. Reason: edit
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post #2 of 16 (permalink) Old 10-24-2018, 10:23 AM
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Can we note that TPMS sensors are not used in Canada. We have indirect pressure monitoring.

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post #3 of 16 (permalink) Old 10-24-2018, 10:27 AM Thread Starter
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Quote:
Originally Posted by mikev123456789 View Post
Can we note that TPMS sensors are not used in Canada. We have indirect pressure monitoring.
Awesome. Do you have more info?
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post #4 of 16 (permalink) Old 10-24-2018, 12:03 PM
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Sale on a set for the 2018 + 433mhz style for Ascent, Legacy, Outback https://www.tpms.com/Schrader_33700_...03fl00aset.htm

If this isn't info you wanted I'll remove it.
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post #5 of 16 (permalink) Old 10-24-2018, 12:28 PM Thread Starter
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Quote:
Originally Posted by DugsSin View Post
Sale on a set for the 2018 + 433mhz style for Ascent, Legacy, Outback https://www.tpms.com/Schrader_33700_...03fl00aset.htm

If this isn't info you wanted I'll remove it.
Nope! That's perfect. I'll add the info.
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post #6 of 16 (permalink) Old 11-10-2018, 05:26 PM
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Mine drive me nuts on 2015. Weekly check at discount tire. Seem to need checked with every cold snap
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post #7 of 16 (permalink) Old 11-10-2018, 06:55 PM Thread Starter
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This user got a tool to program his sensors back and forth on his 2018 Outback with the newer style 433 mhz system:

https://www.subaruoutback.org/forums...rk-thread.html
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post #8 of 16 (permalink) Old 11-10-2018, 07:15 PM
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TPMS part# website for all cars
Dill Air Controls Products

RIP 96 Legacy 2.2 Thanks for 380,000 miles. (4EAT lost reverse)
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post #9 of 16 (permalink) Old 12-22-2018, 02:51 AM
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Thanks Brucey

I wanted to say thinks for this. I'm working to develop cloned Schrader 33500's for my 2009 Outback snow wheels, and this is helpful. Fibber also a HUGE help so again thanks Fibber!

Also, here's some great information...

http://usa.ez-sensor.com/2009/subaru/outback.html

Lee
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post #10 of 16 (permalink) Old 01-20-2019, 10:12 AM
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Anyone know if you get aftermarket wheels if the OEM sensors will fit? I'm looking at wheels with an offset of 47 compared to the OEM 55. Size would be the same.


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