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Or you could turn the heat down......
Why suffer..?
Purchase/install a manual coolant flow shutoff valve at Home Depot to block all coolant flow to the heater core (disabling the climate control's reheat "path"). Thereby increasing the A/C operating efficiency dramatically. Improved FE and less heat load on the engine cooling system.
By 2001 Lexus had C-best options that allowed the driver to disable the A/C indefinitely, a good procedure throughout the wintertime period.
link title
about one or two pages down you will find rear sub removal steps w/pics.
It is what I used.
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Did you ever figure out what the I/O button does? I bought a 2005 Lexus LS430 a few months ago and I have a similar button that is mounted by the drive side right knee. It wasn't in the manual, so I assumed it must be an aftermarket thing. I thought that mine might have been an on/off switch for an external subwoofer amp that has been removed, but I am not sure. I had given up on it until I saw your post. Let me know if you have any ideas of what yours does and maybe mine is wired for the same thing. Thanks!
I've not driven a rear wheel car in ages and live outside of Boston so I can get tons of snow. Will it handle okay in snowy conditions?
But I do ALWAYS keep a set of quick and easy install tire chains to put on the rear when needed.
Snow tires are only good when there is actually snow. If it's 1/4 inch hardpack, I suppose a good sticky rain tire would be all right.
IMMHO TC on a RWD or R/awd vehicle is only good for warning the driver of slippery roadbed conditions for which otherwise one would not, might not, be aware.
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What does your owner's manual say is the interval?
25+ MPG.
Impressive, impressed.
My question for you, or anyone here, is this. If you change the transmission fluid (I'm talking about a partial change as most mechanics do) every 30,000 miles at what mileage do you start to see problems with the transmission clutches? Both my car's trani's are fine, so far, but I never pull any heavy weight, and have a combination of city/hwy driving. Thanks.
As of around 2000 the ATF pump no longer works against "constant" full line pressure, real time control, only supplies high pressure as/when "commended", mostly only during shifts.
Modern day 6(10) speed automatics spend more road time, dramatically so, bypassing the torque converter via the lockup clutch than otherwise.
So, actual clutch surface frictional wear is now coming to the forefront for determining transmission service life.
Actually *load* has a bearing on heat, too (no pun intended). This is why, for instance, many modern automatics are forbidden to go into overdrive until a certain temperature is reached, and also why modern trucks often have a "tow" button, so that you don't tow in overdrive.
Thanks.
I have always thought that not going into OD initially was to allow the catalyst to get up to operational temperature sooner.
As for a transmission, I do think heat is enemy #1; this is why trans coolers are mandatory on "towing packages".
Thanks.