On Sat, 26 Apr 2008 18:29:25 -0400, Jay Somerset
<jay-1941-@[EMAIL PROTECTED]
> wrote:
>On Sat, 26 Apr 2008 14:39:06 -0700 (PDT), greg <grezuki@[EMAIL PROTECTED]
>
>wrote:
>
>>On Apr 26, 8:47 am, "Ray O" <rokigawaATtristarassociatesDOTcom> wrote:
>>> "mcbrue" <mcb...@[EMAIL PROTECTED]
> wrote in message
>>>
>>>
news:d63a0211-72e1-4191-8a22-f6972781faac@[EMAIL PROTECTED]
>>>
>>> > Describe how the tire pressure monitor system works. On my 2006
LS430
>>> > Ultra model there are no monitoring devices present in the tire
valve
>>> > stems. There are no monitoring devices evident to the tire guys who
>>> > install the tires. If you press and hold the tire pressure monitor
>>> > button under the dash, a light comes on and says pressure monitoring
>>> > is initializing - you drive it around for a block or so over 19
miles/
>>> > hour and the light goes out.
>>>
>>> > Extra credit - is the spare tire also monitored?
>>>
>>> There are air pressure sensors built into the valve stems, including
the
>>> spare tire.
>>> --
>>>
>>> Ray O
>>> (correct punctuation to reply)
>>
>>Sorry to disagree, Ray, but I believe the 06 uses the abs wheel speed
>>sensors; the wheels do not have tire pressure sensors.
>
>I thought I understood how this all worked until I read your reply
>(immediately above). If I understand you correctly, you are saying
>that the tire pressure warning operates with a sensor that detects an
>abnormally low tire circumference, rather than directly sensing
>pressure. Is this right? (At least with 2006 models?) If so, what
>is it triggering off -- sustained differences in apparent wheel speed
>between the 4 wheels?
Being an impatient SOB, I did a Google search on the subject. I don't
know which system the 2006 Lexi use (passive/active), but here is a
TireTrack web page that expalins the two types of monitoring system.
http://www.tirerack.com/tires/tiretech/techpage.jsp?techid=44
--
Jay (remove dashes for legal email address)
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