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alt.autos.subaru |
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<[email protected]> |
On Fri, 14 Aug 2020 23:16:46 -0500, VanguardLH <[email protected]> wrote:
><[email protected]> wrote:
>
>> On Tue, 11 Aug 2020 08:12:54 -0500, VanguardLH <[email protected]> wrote:
>>
>>><[email protected]> wrote:
>>>
>>>> I have had this Outback since new, and have not seen this dash warning
>>>> before. Nor can I find it in my user manuals. Nor on the web.
>>>>
>>>> It is a yellow possible lower case 'i' within brackets appearing in
>>>> the small transmission drive window on the left side of 'D'.
>>>> Possibly lil
>>>>
>>>> The too distant dealer I bought it from is OOB.
>>>
>>>Found on the web searching for "outback 2016 dash indicators":
>>>
>>>https://www.subaru.com/service-parts-accessories/auto/dashboard-indicator-warning-lights-indicators.html
>>>
>>>Maybe the parking brake is still on and your brake pads are getting
>>>worn? If it is not one of those shown, take a pic of your dashboard to
>>>show the indicator, and upload the photo to online storage (e.g., imgur,
>>>tinypic) to provide a URL to the photo, so we can see what you see.
>>
>> I inflated the low tire and both dash indicators went out'. Still
>> wonder why the second one is not in the book.
>
>The low pressure indicator looks like a cutout view of a tire (sidewalls
>and tread) with an exclamation mark inside. There are transmitters in
>each tire. If they get replaced, like the tire valve went bad, the new
>ones have to get paired up to the car. Any shop that replaces the
>transmitters have to link new ones to the car's TPMS (Tire Pressure
>Monitoring System). They have a battery because they are wireless
>transmitters, so the battery might've gone dead. Don't know how long
>the batteries last, so maybe 4 years, the age of your car, is about when
>they get too weak or die. Take it to a car shop to have them check the
>batteries in each tire's TPMS transmitter and re-sync it to the car's
>TPMS.
>
>If the battery has gone weak or dead, they are not replaceable. The
>sensor is sealed with the battery inside. You have to replace the TPMS
>sensor in the car. That means removing the tire, replacing the sensor,
>put the tire back on the wheel and balance it, and sync the new sensor's
>ID to the car. The lithium batteries inside newer TPMS sensor last
>anywhere from 5 to 10 years, but some stuff breaks early, and old models
>die after 5-6 years. The sensor only broadcasts when the car is in
>motion (maybe they have an internal g-force switch that activates when
>the wheel spins). Someone who drives little will incur a longer battery
>life than someone that is driving continuously during their work hours.
>TPMS sensors were available since early '90s, but became legislated in
>2008 as mandatory on new cars. While new cars since 2008 must have
>TPMS, there is no legal requirement to replace a sensor that later goes
>defective which causes the dash light to come on. The type that have a
>metal nut to hold the valve stem and sensor in the wheel are subject to
>corrosion hence failure. The snap-in or rubber molded ones don't rust.
>If the valve stem fails due to corrosion (water, salt) and a replacement
>stem core won't work, the valve leaks, have to get replaced, and the
>TPMS sensor is integral to the valve stem. Any use of leak sealer
>inside the tire can cause sensor problems, along with screwing up the
>balance of the wheel. All batteries are chemical hence they don't last
>forever, or even for that many years when in use.
>
>https://en.wikipedia.org/wiki/Tire-pressure_monitoring_system
>https://www.subaru-tpms.com/subaru-tpms.html
>
>I suppose the TPMS sensor in the car could get out of calibration, and
>report a tire as having low or high pressure when not true.
>
>If you swap tires, like having a set for summer and another set for
>winter, you have to sync the TPMS transmitters in the tires to the car
>each time you swap the tire set.
>
>https://www.youtube.com/watch?v=fwZZzstVSoA
>
>Figure a shop will charge about $5 to $10 per wheel to sync the TPMS
>sensor inside the wheel, along with some hourly charge and shop costs.
>If they're not replacing the sensors, it's just their labor to use their
>electronic gear to scan and sync the sensors to the car. You could buy
>the same tools ($10 to $180). There are cheap tools, but you have to
>enter the sensor ID which means you have to know what is the sensor's ID
>by taking the tire off the wheel, or record the IDs when the TPMS
>sensor(s) get replaced, both of which require rebalancing the wheel..
>The more expensive TPMS tools can scan for the radio transmission of the
>sensors. They can read the sensor ID to then sync it to the car.
>
>If they have to replace the battery, that means removing the tire from
>the wheel, and might incur having to rebalance after putting the tire
>back on the wheel.
>
>https://www.schradertpms.com/en/driver-education/tpms-replacement
>
>
>Don't know what you mean by "second one". I see only 1 indicator for
>low tire pressure listed in the mentioned article.
There is the normal yellow warning indicator looking like a tire with
"i" in it plus the second yellow warning indicator looking like
brakets with "i" in it. That said, thank u for your detailed
explains.
Do all new cars have this TPMS system? Does replacing a tire consist
of a trip to a tire dealer plus a trip to a car dealer? Or does the
tire dealer eal with the TPMS also? All this I don't want or need.