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Toyota Highlander Maintenance and Repair

4694 messages,  Last post on Dec 01, 2009 at 7:16 AM

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#1507 of 4694 And the results are..... by wwest Jul 23, 2004 (3:21 pm)
Drove home to remove the membrane and on the way home I lowered the right rear window. At 40MPH (max on city streets) the pressure waves were painful on my eardrums. On the way back to the office after removing the membranes the pressure waves were practically non-existant.   Will do more trials at higher speeds over the weekend but it's hard to believe that Toyota and Lexus would screw up this seriously and then simply let it ride for so long.   On the other hand some of the fault for that is likely mine since I have been saying that these pressure waves are somewhat normal historically.   How many of you have actually lodged a complaint with Toyota or Lexus about this?   Since I happen to have a "spare" exhauster port and if the pressure waves persist at higher speeds I may add another exhauster port on the opposite side. After removing the reverse flow blocking membrane, of course.   I know from my experience with the Ford station wagons that it didn't take much of an opening of the rear liftgate glass to completely eliminate the pressure waves.
#1508 of 4694 Where is it... by wwest Jul 23, 2004 (3:26 pm)
On my 01 RX300...   Directly behind the red "street/parking" lamp that's mounted on the rear bumper wraparound "bulge" on the driver's side rear quarter panel. If you put the fan on high and flow on fresh with the vehicle closed up completely you can feel the air outflow behind the rear wheel at the bottom of the driver's side rear quarter panel.   On the RX300 you will also likely hear the fluttering that first called my attention to this.
#1509 of 4694 FYI by wwest Jul 23, 2004 (3:50 pm)
Posted on the Toyota LC and Lexus LX forums.   LC & LX owners, HL and RX owners need your help. Many of these owners have posted complaints about the eardrum busting helicopter noise generated within the vehicle with a single rear window down and clipping along at hwy speeds.   From my own experience I know historically of this problem. My 68 and 72 Ford station wagons were subject to this effect but by simply lowering the rear liftgate glass slightly I could eliminate the effect.   I notice that the LC, and maybe the LX, have cabin airflow exhauster ports which are mounted above the "beltline", one on each side of your vehicles.   Do those exhauster ports and their "high mount" location allow enough cabin air outflow to prevent the helicopter sound in the LC and LX? Or are have you seen the same type of complaint?   For reference read:   Toyota Highlander Owners: Problems and solutions at post 1490 on... Replies to this message: 02hl (Jul 23, 2004 7:28 pm)
#1510 of 4694 Re: FYI [wwest] by 02hl Jul 23, 2004 (7:28 pm)
Replying to: wwest (Jul 23, 2004 3:50 pm) Although I would love to drive with the sunroof wide open, I can deal with the wind noise knowing the car has such an excellent seal throughout. As for your project, you may want to reconsider if you plan on keeping it permanent. Humid conditions could cause musty odors in your vehicle.
#1511 of 4694 what by wain Jul 23, 2004 (7:34 pm)
is the original purpose of these vents.   still ask for a better description of where it is.   1. is it in the wheel well somewhere near the tire? yes no?   2. connected to the vent on the left when you open the rear hatch. there is a vent inside the car which has open slots - on the other (passenger side) the vent looks the same but is sealed up?   3. can you see it from outside the car or do you have to pull the lower fender edge out on the drivers side at the back?
#1512 of 4694 Location by wwest Jul 23, 2004 (9:41 pm)
Except on the LC and LX the exhauster port(s) is not visible from inside or outside. On my 01 RX you get to the outside of the exhauster port the same way you would do to change the bulb in the street/parking light at the bottom of the driver's side rear quarter panel.   02hl...   I don't comprehend your meaning. If anything freer outflow, a more open exhauster port, would lend itself to lowering the interior humidity.   Purpose of vents...   These vehicles are so well sealed and insulated the "fresh" mode of the climate control would have no functionality absent a method for exhausting some of the cabin atmosphere to "make room" for fresh incoming airflow.
#1513 of 4694 by wain Jul 24, 2004 (3:06 am)
so what would be the problem with taking the membrane off or taking 1/2 of it off?   I never use outside air as it is hot and humid
#1514 of 4694 Maint Req'd Light by ohmygosh Jul 24, 2004 (7:14 am)
I had my oil changed in my new Highlander at 3500 miles. At about 4500 miles the Maintenace Required light came on. I tried to reset according to the owners manual but can't get rid of this light. Apparently the dealer did not reset this at the time he changed my oil. Any suggestions as to how to shut this warning light ?? Replies to this message: tomtoy (May 10, 2007 8:44 am)
#1515 of 4694 exhauster ports by rugby65 Jul 24, 2004 (2:13 pm)
You think mabey these exhauster ports are also nescesary to prevent a concussion of air to your ears and to the speakers when the doors are opened and closed? There is a large amount of air forced into the vehicle when the Hatch is fully opened and shut.

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